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All sourcesNASA NTRSDOE OSTI
NASA NTRS1981

DC-magnetic field vector measurement

A magnetometer experiment was designed to determine the local magnetic field by measuring the total of the Earth's magnetic field and that of an unknown spacecraft. The measured field vector components are available to all onboard experiments via the Spacelab command and data management system. The experiment consists of two parts, an electronic box and the magnetic field sensor. The sensor includes three independent measuring flux-gate magnetometers, each measuring one component. The physical background is the nonlinearity of the B-H curve of a ferrite material. Two coils wound around a ferrite rod are necessary. One of them, a tank coil, pumps the ferrite rod at approximately 20 kilohertz. As a consequence of the nonlinearity, many harmonics can be produced. The second coil (i.e., the detection coil) resonates to the first harmonic. If an unknown dc or low-frequency magnetic field exists, the amplitude of the first harmonic is a measure for the unknown magnetic field. The voltages detected by the sensors are to be digitized and transferred to the command and data management system.

Schmidt, R.↗
NASA NTRS1999

Wide Temperature Magnetization Characteristics of Transverse Magnetically Annealed Amorphous Tapes for High Frequency Aerospace Magnetics

100 kHz magnetization properties of sample transverse magnetically annealed, cobalt-based amorphous and iron-based nanocrystalline tape wound magnetic cores are presented over the temperature range of -150 C to 150 C, at selected values of B(sub peak). Frequency resolved characteristics are given over the range of 50 kHz to 1 MHz, but at B(sub peak) = 0.1 T and 50 C only. Basic exciting winding current and induced voltage data were taken on bare toroidal cores, in a standard type measurement setup. A linear permeability model, which represents the core by a parallel L-R circuit, is used to interpret and present the magnetization characteristics and several figures of merit applicable to inductor materials are reviewed. The 100 kHz permeability thus derived decreases with increasing temperature for the Fe-based, nanocrystalline material, but increases roughly linearly with temperature for the two Co-based materials, as long as B(sub peak) is sufficiently low to avoid saturation effects. Due to the high permeabilities, rather low values of the 'quality factor' Q, from about 20 to below unity, were obtained over the frequency range of 50 kHz to 1 MHz (50 C, B(sub peak) = 0.1 T). Therefore these cores must be gapped in order to make up high Q or high current inductors. However, being rugged, low core loss materials with flat B-H loop characteristics, they may provide new solutions to specialty inductor applications.

Niedra, Janis M.↗
NASA NTRS1996

Chemical Storage of Data

We investigate the possibility of storing data using H and F on a polymer to signify 0 and 1 bits. We show that the difference between the B-F and B-H interaction energies for either C5H5B or C3H3N2B is only slightly larger than the variation in B-F interaction energy with type of neighboring atoms. Pyridine (C5H5N) and (CH3)3P=O have a much larger difference in the H and F interaction energies. (CH3)3P=O may be better suited as a surface probe, because the interaction with neighboring data sites should be smaller.

Bauschlicher, Charles W., Jr.↗
NASA NTRS2002

Performance of High-frequency High-flux Magnetic Cores at Cryogenic Temperatures

Three magnetic powder cores and one ferrite core, which are commonly used in inductor and transformer design for switch mode power supplies, were selected for investigation at cryogenic temperatures. The powder cores are Molypermalloy Core (MPC), High Flux Core (HFC), and Kool Mu Core (KMC). The performance of four inductors utilizing these cores has been evaluated as a function of temperature from 20 C to -180 C. All cores were wound with the same wire type and gauge to obtain equal values of inductance at room temperature. Each inductor was evaluated in terms of its inductance, quality (Q) factor, resistance, and dynamic hysteresis characteristics (B-H loop) as a function of temperature and frequency. Both sinusoidal and square wave excitations were used in these investigations. Measured data obtained on the inductance showed that both the MPC and the HFC cores maintain a constant inductance value, whereas with the KMC and ferrite core hold a steady value in inductance with frequency but decrease as temperature is decreased. All cores exhibited dependency, with varying degrees, in their quality factor and resistance on test frequency and temperature. Except for the ferrite, all cores exhibited good stability in the investigated properties with temperature as well as frequency. Details of the experimental procedures and test results are presented and discussed in the paper.

Gerber, Scott S.↗
DOE OSTI2020

Materials Data on B13H19 by Materials Project

B5H8(BH)4B4H7 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of sixteen boranediylradical molecules, four B4H7 clusters, and four B5H8 clusters. In each B4H7 cluster, there are four inequivalent B+1.15- sites. In the first B+1.15- site, B+1.15- is bonded in a distorted water-like geometry to two H+0.79+ atoms. There is one shorter (1.20 Å) and one longer (1.32 Å) B–H bond length. In the second B+1.15- site, B+1.15- is bonded in a distorted water-like geometry to two H+0.79+ atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the third B+1.15- site, B+1.15- is bonded in a distorted trigonal non-coplanar geometry to three H+0.79+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.36 Å. In the fourth B+1.15- site, B+1.15- is bonded in a distorted trigonal non-coplanar geometry to three H+0.79+ atoms. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. There are seven inequivalent H+0.79+ sites. In the first H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the second H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the third H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the fourth H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the fifth H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the sixth H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the seventh H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In each B5H8 cluster, there are five inequivalent B+1.15- sites. In the first B+1.15- site, B+1.15- is bonded in a distorted trigonal non-coplanar geometry to three H+0.79+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.36 Å. In the second B+1.15- site, B+1.15- is bonded in a distorted trigonal non-coplanar geometry to three H+0.79+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.36 Å. In the third B+1.15- site, B+1.15- is bonded in a distorted water-like geometry to two H+0.79+ atoms. There is one shorter (1.20 Å) and one longer (1.32 Å) B–H bond length. In the fourth B+1.15- site, B+1.15- is bonded in a distorted trigonal non-coplanar geometry to three H+0.79+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.33 Å. In the fifth B+1.15- site, B+1.15- is bonded in a distorted single-bond geometry to one H+0.79+ atom. The B–H bond length is 1.40 Å. There are eight inequivalent H+0.79+ sites. In the first H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the second H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the third H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the fourth H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the fifth H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the sixth H+0.79+ site, H+0.79+ is bonded in an L-shaped geometry to two B+1.15- atoms. In the seventh H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom. In the eighth H+0.79+ site, H+0.79+ is bonded in a single-bond geometry to one B+1.15- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B4H5 by Materials Project

B4H5 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of twelve boranediylradical molecules and four B13H17 clusters. In each B13H17 cluster, there are thirteen inequivalent B sites. In the first B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–B bond length is 1.72 Å. The B–H bond length is 1.20 Å. In the second B site, B is bonded in a single-bond geometry to one B and one H atom. The B–B bond length is 1.79 Å. The B–H bond length is 1.19 Å. In the third B site, B is bonded in a distorted hexagonal planar geometry to six B atoms. There are a spread of B–B bond distances ranging from 1.71–1.91 Å. In the fourth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.32 Å. In the fifth B site, B is bonded in a water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.35 Å) B–H bond length. In the sixth B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the seventh B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the eighth B site, B is bonded in a water-like geometry to one B and two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the ninth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.19 Å. In the tenth B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the eleventh B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.37 Å. In the twelfth B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.37 Å. In the thirteenth B site, B is bonded in a distorted water-like geometry to one B and two H atoms. There is one shorter (1.19 Å) and one longer (1.31 Å) B–H bond length. There are seventeen inequivalent H sites. In the first H site, H is bonded in an L-shaped geometry to two B atoms. In the second H site, H is bonded in an L-shaped geometry to two B atoms. In the third H site, H is bonded in an L-shaped geometry to two B atoms. In the fourth H site, H is bonded in an L-shaped geometry to two B atoms. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In the sixth H site, H is bonded in a single-bond geometry to one B atom. In the seventh H site, H is bonded in a single-bond geometry to one B atom. In the eighth H site, H is bonded in a single-bond geometry to one B atom. In the ninth H site, H is bonded in a single-bond geometry to one B atom. In the tenth H site, H is bonded in a single-bond geometry to one B atom. In the eleventh H site, H is bonded in a single-bond geometry to one B atom. In the twelfth H site, H is bonded in a single-bond geometry to one B atom. In the thirteenth H site, H is bonded in a single-bond geometry to one B atom. In the fourteenth H site, H is bonded in a single-bond geometry to one B atom. In the fifteenth H site, H is bonded in a single-bond geometry to one B atom. In the sixteenth H site, H is bonded in an L-shaped geometry to two B atoms. In the seventeenth H site, H is bonded in an L-shaped geometry to two B atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B7H10 by Materials Project

B4H7(BH)3 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of twenty-four boranediylradical molecules and eight B4H7 clusters. In each B4H7 cluster, there are four inequivalent B sites. In the first B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. In the second B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the third B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the fourth B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. There are seven inequivalent H sites. In the first H site, H is bonded in an L-shaped geometry to two B atoms. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in a single-bond geometry to one B atom. In the fifth H site, H is bonded in an L-shaped geometry to two B atoms. In the sixth H site, H is bonded in a single-bond geometry to one B atom. In the seventh H site, H is bonded in an L-shaped geometry to two B atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B2H3 by Materials Project

B4H7B2H3(BH)2 crystallizes in the orthorhombic Pbca space group. The structure is zero-dimensional and consists of sixteen boranediylradical molecules, eight diborane molecules, and eight B4H7 clusters. In each B4H7 cluster, there are four inequivalent B sites. In the first B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.41 Å. In the second B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.40 Å. In the third B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.31 Å) B–H bond length. In the fourth B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.31 Å) B–H bond length. There are seven inequivalent H sites. In the first H site, H is bonded in an L-shaped geometry to two B atoms. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in an L-shaped geometry to two B atoms. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In the sixth H site, H is bonded in a single-bond geometry to one B atom. In the seventh H site, H is bonded in an L-shaped geometry to two B atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B2H5 by Materials Project

B2H5 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four B2H5 clusters. there are four inequivalent B sites. In the first B site, B is bonded in a distorted tetrahedral geometry to four H atoms. There is two shorter (1.20 Å) and two longer (1.41 Å) B–H bond length. In the second B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There is one shorter (1.19 Å) and two longer (1.27 Å) B–H bond length. In the third B site, B is bonded in a distorted tetrahedral geometry to four H atoms. There is two shorter (1.20 Å) and two longer (1.41 Å) B–H bond length. In the fourth B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There is one shorter (1.19 Å) and two longer (1.27 Å) B–H bond length. There are ten inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one B atom. In the second H site, H is bonded in an L-shaped geometry to two B atoms. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in a single-bond geometry to one B atom. In the fifth H site, H is bonded in an L-shaped geometry to two B atoms. In the sixth H site, H is bonded in an L-shaped geometry to two B atoms. In the seventh H site, H is bonded in a single-bond geometry to one B atom. In the eighth H site, H is bonded in a single-bond geometry to one B atom. In the ninth H site, H is bonded in a single-bond geometry to one B atom. In the tenth H site, H is bonded in an L-shaped geometry to two B atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B10H13 by Materials Project

B3H5B6H7BH crystallizes in the tetragonal I4_1cd space group. The structure is zero-dimensional and consists of sixteen boranediylradical molecules, sixteen B3H5 clusters, and eight B6H7 clusters. In each B3H5 cluster, there are three inequivalent B sites. In the first B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the second B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. In the third B site, B is bonded in a distorted water-like geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. There are five inequivalent H sites. In the first H site, H is bonded in an L-shaped geometry to two B atoms. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in an L-shaped geometry to two B atoms. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In each B6H7 cluster, there are six inequivalent B sites. In the first B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. The B–B bond length is 1.73 Å. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. In the second B site, B is bonded in a 6-coordinate geometry to six B atoms. There are a spread of B–B bond distances ranging from 1.71–1.81 Å. In the third B site, B is bonded in a distorted water-like geometry to one B and two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the fourth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.20 Å. In the fifth B site, B is bonded in a distorted water-like geometry to one B and two H atoms. There is one shorter (1.19 Å) and one longer (1.32 Å) B–H bond length. In the sixth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.20 Å. There are seven inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one B atom. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in an L-shaped geometry to two B atoms. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In the sixth H site, H is bonded in an L-shaped geometry to two B atoms. In the seventh H site, H is bonded in a single-bond geometry to one B atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B3H4 by Materials Project

B9H11(BH2)2BH crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four boranediylradical molecules, four B9H11 clusters, and four BH2 clusters. In each B9H11 cluster, there are nine inequivalent B sites. In the first B site, B is bonded in a distorted L-shaped geometry to two H atoms. There is one shorter (1.20 Å) and one longer (1.37 Å) B–H bond length. In the second B site, B is bonded in a 1-coordinate geometry to five B and one H atom. There are a spread of B–B bond distances ranging from 1.61–1.75 Å. The B–H bond length is 1.49 Å. In the third B site, B is bonded in a single-bond geometry to one B and one H atom. The B–H bond length is 1.19 Å. In the fourth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.20 Å. In the fifth B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.39 Å. In the sixth B site, B is bonded in a distorted water-like geometry to two H atoms. Both B–H bond lengths are 1.28 Å. In the seventh B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.18 Å. In the eighth B site, B is bonded in a distorted single-bond geometry to one B and one H atom. The B–H bond length is 1.20 Å. In the ninth B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. There are a spread of B–H bond distances ranging from 1.20–1.34 Å. There are eleven inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one B atom. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in an L-shaped geometry to two B atoms. In the fourth H site, H is bonded in a single-bond geometry to one B atom. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In the sixth H site, H is bonded in a single-bond geometry to one B atom. In the seventh H site, H is bonded in a single-bond geometry to one B atom. In the eighth H site, H is bonded in a bent 120 degrees geometry to two B atoms. In the ninth H site, H is bonded in a distorted L-shaped geometry to two B atoms. In the tenth H site, H is bonded in a single-bond geometry to one B atom. In the eleventh H site, H is bonded in a water-like geometry to two B atoms. In each BH2 cluster, there are two inequivalent B sites. In the first B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.20–1.34 Å. In the second B site, B is bonded in a distorted bent 120 degrees geometry to two H atoms. There is one shorter (1.19 Å) and one longer (1.31 Å) B–H bond length. There are four inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one B atom. In the second H site, H is bonded in a single-bond geometry to one B atom. In the third H site, H is bonded in an L-shaped geometry to two B atoms. In the fourth H site, H is bonded in a single-bond geometry to one B atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B5H8 by Materials Project

B5H8 crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four boranediylradical molecules and four B3H5 clusters. In each B3H5 cluster, there are nine inequivalent B sites. In the first B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.36 Å. In the second B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the third B site, B is bonded in a distorted trigonal non-coplanar geometry to three H atoms. There are a spread of B–H bond distances ranging from 1.19–1.36 Å. In the fourth B site, B is bonded in a distorted L-shaped geometry to one B and two H atoms. The B–B bond length is 1.68 Å. Both B–H bond lengths are 1.37 Å. In the fifth B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. The B–B bond length is 1.71 Å. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the sixth B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. The B–B bond length is 1.70 Å. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the seventh B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. The B–B bond length is 1.71 Å. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the eighth B site, B is bonded in a distorted trigonal non-coplanar geometry to one B and three H atoms. The B–B bond length is 1.70 Å. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. In the ninth B site, B is bonded in a 5-coordinate geometry to five B atoms. There are fifteen inequivalent H sites. In the first H site, H is bonded in an L-shaped geometry to two B atoms. In the second H site, H is bonded in an L-shaped geometry to two B atoms. In the third H site, H is bonded in a single-bond geometry to one B atom. In the fourth H site, H is bonded in a single-bond geometry to one B atom. In the fifth H site, H is bonded in a single-bond geometry to one B atom. In the sixth H site, H is bonded in a single-bond geometry to one B atom. In the seventh H site, H is bonded in an L-shaped geometry to two B atoms. In the eighth H site, H is bonded in a single-bond geometry to one B atom. In the ninth H site, H is bonded in a single-bond geometry to one B atom. In the tenth H site, H is bonded in a single-bond geometry to one B atom. In the eleventh H site, H is bonded in an L-shaped geometry to two B atoms. In the twelfth H site, H is bonded in an L-shaped geometry to two B atoms. In the thirteenth H site, H is bonded in an L-shaped geometry to two B atoms. In the fourteenth H site, H is bonded in an L-shaped geometry to two B atoms. In the fifteenth H site, H is bonded in an L-shaped geometry to two B atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B9H11 by Materials Project

(BH)6B3H5 crystallizes in the orthorhombic Pccn space group. The structure is zero-dimensional and consists of thirty-two boranediylradical molecules, eight diborane molecules, and eight B3H5 clusters. In each B3H5 cluster, there are three inequivalent B1- sites. In the first B1- site, B1- is bonded in a distorted water-like geometry to two H+0.82+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the second B1- site, B1- is bonded in a distorted water-like geometry to two H+0.82+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the third B1- site, B1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.82+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. There are five inequivalent H+0.82+ sites. In the first H+0.82+ site, H+0.82+ is bonded in an L-shaped geometry to two B1- atoms. In the second H+0.82+ site, H+0.82+ is bonded in a single-bond geometry to one B1- atom. In the third H+0.82+ site, H+0.82+ is bonded in an L-shaped geometry to two B1- atoms. In the fourth H+0.82+ site, H+0.82+ is bonded in a single-bond geometry to one B1- atom. In the fifth H+0.82+ site, H+0.82+ is bonded in a single-bond geometry to one B1- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B3H5 by Materials Project

B5H9BH is Cubic alpha N2-like structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four boranediylradical molecules and four B5H9 clusters. In each B5H9 cluster, there are three inequivalent B1- sites. In the first B1- site, B1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.60+ atoms. There is one shorter (1.19 Å) and two longer (1.31 Å) B–H bond length. In the second B1- site, B1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.60+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.38 Å. In the third B1- site, B1- is bonded in a distorted water-like geometry to two H+0.60+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. There are five inequivalent H+0.60+ sites. In the first H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the second H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the third H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the fourth H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms. In the fifth H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B3H5 by Materials Project

(BH2)3(BH)2B4H7 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight boranediylradical molecules, four B4H7 clusters, and four BH2 clusters. In each B4H7 cluster, there are four inequivalent B1- sites. In the first B1- site, B1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.60+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. In the second B1- site, B1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.60+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.35 Å. In the third B1- site, B1- is bonded in a distorted water-like geometry to two H+0.60+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the fourth B1- site, B1- is bonded in a distorted water-like geometry to two H+0.60+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. There are seven inequivalent H+0.60+ sites. In the first H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms. In the second H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the third H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms. In the fourth H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms. In the fifth H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the sixth H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the seventh H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In each BH2 cluster, there are three inequivalent B1- sites. In the first B1- site, B1- is bonded in a distorted water-like geometry to two H+0.60+ atoms. There is one shorter (1.19 Å) and one longer (1.28 Å) B–H bond length. In the second B1- site, B1- is bonded in a distorted tetrahedral geometry to four H+0.60+ atoms. There are a spread of B–H bond distances ranging from 1.20–1.40 Å. In the third B1- site, B1- is bonded in a distorted water-like geometry to two H+0.60+ atoms. There is one shorter (1.19 Å) and one longer (1.28 Å) B–H bond length. There are six inequivalent H+0.60+ sites. In the first H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the second H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the third H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the fourth H+0.60+ site, H+0.60+ is bonded in a single-bond geometry to one B1- atom. In the fifth H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms. In the sixth H+0.60+ site, H+0.60+ is bonded in an L-shaped geometry to two B1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BH3 by Materials Project

BH3 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two borane molecules. B3- is bonded to four H1+ atoms to form edge-sharing BH4 tetrahedra. There are a spread of B–H bond distances ranging from 1.19–1.32 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one B3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one B3- atom. In the third H1+ site, H1+ is bonded in an L-shaped geometry to two equivalent B3- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B5H9 by Materials Project

B5H9 is Cubic alpha N2-like structured and crystallizes in the tetragonal I4mm space group. The structure is zero-dimensional and consists of two boranediylradical molecules and two BH2 clusters. In each BH2 cluster, B+1.80- is bonded in a distorted trigonal non-coplanar geometry to three H1+ atoms. There is one shorter (1.19 Å) and two longer (1.35 Å) B–H bond length. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one B+1.80- atom. In the second H1+ site, H1+ is bonded in an L-shaped geometry to two equivalent B+1.80- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B5H7 by Materials Project

B3H5(BH)2 crystallizes in the monoclinic P2/c space group. The structure is zero-dimensional and consists of sixteen boranediylradical molecules and eight B3H5 clusters. In each B3H5 cluster, there are two inequivalent B+0.60- sites. In the first B+0.60- site, B+0.60- is bonded in a distorted water-like geometry to two H+0.43+ atoms. There is one shorter (1.19 Å) and one longer (1.33 Å) B–H bond length. In the second B+0.60- site, B+0.60- is bonded in a distorted trigonal non-coplanar geometry to three H+0.43+ atoms. There is one shorter (1.18 Å) and two longer (1.35 Å) B–H bond length. There are five inequivalent H+0.43+ sites. In the first H+0.43+ site, H+0.43+ is bonded in a single-bond geometry to one B+0.60- atom. The H–B bond length is 1.19 Å. In the second H+0.43+ site, H+0.43+ is bonded in a single-bond geometry to one B+0.60- atom. In the third H+0.43+ site, H+0.43+ is bonded in an L-shaped geometry to two B+0.60- atoms. In the fourth H+0.43+ site, H+0.43+ is bonded in a single-bond geometry to one B+0.60- atom. In the fifth H+0.43+ site, H+0.43+ is bonded in an L-shaped geometry to two B+0.60- atoms. The H–B bond length is 1.33 Å.

36 MATERIALS SCIENCE↗