SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
H2S is alpha Samarium-like structured and crystallizes in the tetragonal I4_1/acd space group. The structure is zero-dimensional and consists of sixteen hydrogen sulfide molecules. H1+ is bonded in a single-bond geometry to one S2- atom. The H–S bond length is 1.35 Å. S2- is bonded in an L-shaped geometry to two equivalent H1+ atoms.
H2S is beta Np structured and crystallizes in the tetragonal P4_2 space group. The structure is zero-dimensional and consists of sixteen hydrogen sulfide molecules. H1+ is bonded in a single-bond geometry to one S2- atom. The H–S bond length is 1.36 Å. S2- is bonded in an L-shaped geometry to two equivalent H1+ atoms.
SH3 is High-temperature superconductor structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SH3 clusters. there are two inequivalent H+0.33+ sites. In the first H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one S1- atom. The H–S bond length is 1.48 Å. In the second H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one S1- atom. The H–S bond length is 1.41 Å. S1- is bonded in a distorted T-shaped geometry to three H+0.33+ atoms.
SH3 is High-temperature superconductor structured and crystallizes in the cubic Im-3m space group. The structure is three-dimensional and consists of two SH3 frameworks. H+0.33+ is bonded in a linear geometry to two equivalent S1- atoms. Both H–S bond lengths are 1.82 Å. S1- is bonded to six equivalent H+0.33+ atoms to form corner-sharing SH6 octahedra. The corner-sharing octahedral tilt angles are 0°.
SH3 is High-temperature superconductor structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SH3 clusters. H+0.33+ is bonded in a single-bond geometry to one S1- atom. The H–S bond length is 1.45 Å. S1- is bonded in a distorted T-shaped geometry to three equivalent H+0.33+ atoms.
SH3 crystallizes in the orthorhombic Cccm space group. The structure is one-dimensional and consists of eight hydrogen molecules and eight H2S ribbons oriented in the (0, 0, 1) direction. In each H2S ribbon, there are three inequivalent H+0.33+ sites. In the first H+0.33+ site, H+0.33+ is bonded in a linear geometry to two S1- atoms. There is one shorter (1.66 Å) and one longer (1.68 Å) H–S bond length. In the second H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one S1- atom. The H–S bond length is 1.36 Å. In the third H+0.33+ site, H+0.33+ is bonded in a single-bond geometry to one S1- atom. The H–S bond length is 1.35 Å. There are two inequivalent S1- sites. In the first S1- site, S1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.33+ atoms. In the second S1- site, S1- is bonded in a distorted trigonal non-coplanar geometry to three H+0.33+ atoms.
SH3 is Khatyrkite-derived structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of four hydrogen molecules and eight hydrogen sulfide molecules.
H2S is beta-like structured and crystallizes in the orthorhombic Ibca space group. The structure is zero-dimensional and consists of sixteen hydrogen sulfide molecules. H1+ is bonded in a single-bond geometry to one S2- atom. The H–S bond length is 1.35 Å. S2- is bonded in an L-shaped geometry to two equivalent H1+ atoms.
Explore the source record for details and available documents.
We lack fundamental information related to the location and timing of the aqueous alteration in the early solar system, and the detailed nature of the aqueous fluid itself [1,2,3]. Two thermally-metamorphosed ordinary chondrite regolith breccias (Monahans 1998, hereafter simply “Monahans” (H5) and Zag (H3-6)) contain fluid inclusion-bearing halite (NaCl) crystals [4,5]. The halites were dated by K-Ar, Rb-Sr and I-Xe systematics to be ~4.5 billion years old [4,6,7] and thus the trapped aqueous fluids are at least as ancient. Through previously-published O, H, Cr isotopic work we have established that the fluid-bearing halite originated in the outer solar system[8].