Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 6 (June 2013)

metal-organic compounds

Acta Cryst. (2013). C69, 569-572    [ doi:10.1107/S0108270113009311 ]

An approach to creating novel anions: silylated triel compounds with -CH2- and -O- linkers, [InCl2{O(HO)Si(t-Bu)2}]2 and Li[B(CH2SiMe3)4]

S. Scholz, H. Vitze, M. Bolte and H.-W. Lerner

Abstract: Bis­[[mu]-di-tert-butyl­(hy­droxy)­silanol­ato]­bis­[chlorido­indium(III)], [In2(C8H19O2Si)2Cl4], (I), is a centrosymmetric two-centre indium complex featuring a system of three annulated four-membered rings; the structure is the first example of an In2O2 ring which is annulated with two Si-O units to form a ring system composed of three rings. The coordination environment of the In centres is a distorted trigonal bipyramid. The crystal packing of (I) is characterized by chains of mol­ecules connected by O-H...Cl hydrogen bonds. The crystal of (I) was a nonmerohedral twin. There is no known example of an In2O2 ring in which the In atoms carry any two halogen ligands. The structure of tetra­kis­(tetra­hydro­furan)­lithium tetra­kis­[(tri­methyl­silyl)­methyl]­borate, [Li(C4H8O)4](C16H44BSi4), (II), is composed of discrete cations and anions. The coordination geometries of the Li and B centres is tetra­hedral. The cations and anions lie in planes parallel to the ab plane. There are no short contacts between the cations and anions. Compound (II) is the first example of a B centre bonded to four -CH2Si units.

Formula: [In2(C8H19O2Si)2Cl4] and [Li(C4H8O)4](C16H44BSi4)

hkldisplay filedownload file

Structure factor file (CIF format) (132.1 kbytes)
[ doi:10.1107/S0108270113009311/wq3030Isup2.hkl ]
Contains datablock I

hkldisplay filedownload file

Structure factor file (CIF format) (410.8 kbytes)
[ doi:10.1107/S0108270113009311/wq3030IIsup3.hkl ]
Contains datablock II


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