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AlH3 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Al3+ is bonded to six equivalent H1- atoms to form corner-sharing AlH6 octahedra. The corner-sharing octahedral tilt angles are 39°. All Al–H bond lengths are 1.72 Å. H1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms.
AlH3 crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. there are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six H1- atoms to form a mixture of edge and corner-sharing AlH6 octahedra. The corner-sharing octahedra tilt angles range from 0–46°. There are a spread of Al–H bond distances ranging from 1.69–1.77 Å. In the second Al3+ site, Al3+ is bonded to six H1- atoms to form corner-sharing AlH6 octahedra. The corner-sharing octahedra tilt angles range from 11–46°. There is four shorter (1.72 Å) and two longer (1.76 Å) Al–H bond length. There are four inequivalent H1- sites. In the first H1- site, H1- is bonded in a distorted bent 120 degrees geometry to two Al3+ atoms. In the second H1- site, H1- is bonded in a water-like geometry to two equivalent Al3+ atoms. In the third H1- site, H1- is bonded in a linear geometry to two Al3+ atoms. In the fourth H1- site, H1- is bonded in a linear geometry to two equivalent Al3+ atoms.
AlH3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six H1- atoms to form corner-sharing AlH6 octahedra. The corner-sharing octahedra tilt angles range from 38–44°. There are a spread of Al–H bond distances ranging from 1.72–1.74 Å. In the second Al3+ site, Al3+ is bonded to six H1- atoms to form corner-sharing AlH6 octahedra. The corner-sharing octahedra tilt angles range from 39–44°. There is four shorter (1.73 Å) and two longer (1.74 Å) Al–H bond length. There are four inequivalent H1- sites. In the first H1- site, H1- is bonded in a bent 150 degrees geometry to two Al3+ atoms. In the second H1- site, H1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms. In the third H1- site, H1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms. In the fourth H1- site, H1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms.
AlH3 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Al3+ is bonded to six equivalent H1- atoms to form corner-sharing AlH6 octahedra. The corner-sharing octahedral tilt angles are 44°. All Al–H bond lengths are 1.72 Å. H1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms.
(AlH3(CO2)3)8(CO2)6O2 crystallizes in the cubic Im-3 space group. The structure is three-dimensional and consists of six carbon dioxide molecules, two water molecules, and one AlH3(CO2)3 framework. In the AlH3(CO2)3 framework, Al3+ is bonded in an octahedral geometry to six equivalent O2- atoms. All Al–O bond lengths are 1.91 Å. C+2.53+ is bonded in a trigonal planar geometry to one H1+ and two equivalent O2- atoms. The C–H bond length is 1.10 Å. Both C–O bond lengths are 1.27 Å. H1+ is bonded in a single-bond geometry to one C+2.53+ atom. O2- is bonded in a bent 120 degrees geometry to one Al3+ and one C+2.53+ atom.