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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Rb(BH)5 by Materials Project

Rb2(BH)9BH crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of four boranediylradical molecules and one Rb2(BH)9 sheet oriented in the (-1, 0, 2) direction. In the Rb2(BH)9 sheet, there are two inequivalent Rb sites. In the first Rb site, Rb is bonded in a 6-coordinate geometry to six H atoms. There are a spread of Rb–H bond distances ranging from 2.52–3.12 Å. In the second Rb site, Rb is bonded in a distorted pentagonal pyramidal geometry to six H atoms. There are a spread of Rb–H bond distances ranging from 2.71–3.11 Å. There are nine inequivalent B sites. In the first B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.21 Å. In the second B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.21 Å. In the third B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.21 Å. In the fourth B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.21 Å. In the fifth B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.20 Å. In the sixth B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.20 Å. In the seventh B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.21 Å. In the eighth B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.20 Å. In the ninth B site, B is bonded in a distorted single-bond geometry to one H atom. The B–H bond length is 1.20 Å. There are nine inequivalent H sites. In the first H site, H is bonded in a distorted single-bond geometry to one Rb and one B atom. In the second H site, H is bonded in a distorted single-bond geometry to one Rb and one B atom. In the third H site, H is bonded in a distorted single-bond geometry to two Rb and one B atom. In the fourth H site, H is bonded in a distorted single-bond geometry to two Rb and one B atom. In the fifth H site, H is bonded in a distorted single-bond geometry to two equivalent Rb and one B atom. In the sixth H site, H is bonded in a distorted bent 120 degrees geometry to one Rb and one B atom. In the seventh H site, H is bonded in a distorted bent 150 degrees geometry to one Rb and one B atom. In the eighth H site, H is bonded in a distorted bent 120 degrees geometry to one Rb and one B atom. In the ninth H site, H is bonded in a distorted single-bond geometry to one Rb and one B atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb2B10(H5N)5 by Materials Project

Rb2B2NH5(BH)8(NH3)4 is Ammonia-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of sixteen ammonia molecules; thirty-two boranediylradical molecules; and four Rb2B2NH5 ribbons oriented in the (1, 0, 0) direction. In each Rb2B2NH5 ribbon, Rb1+ is bonded in a 3-coordinate geometry to three H1+ atoms. There are a spread of Rb–H bond distances ranging from 2.94–3.13 Å. There are two inequivalent B+1.20- sites. In the first B+1.20- site, B+1.20- is bonded in a distorted single-bond geometry to one H1+ atom. The B–H bond length is 1.21 Å. In the second B+1.20- site, B+1.20- is bonded in a distorted single-bond geometry to one H1+ atom. The B–H bond length is 1.21 Å. N3- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two equivalent Rb1+ and one B+1.20- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one Rb1+ and one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to two equivalent Rb1+ and one B+1.20- atom.

36 MATERIALS SCIENCE↗