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Reaction of the Alkylindium(I) Compound In 4 [C(SiMe 3 ) 3 ] 4 with Octacarbonyldicobalt: Bridging of the CoCo Bond by one or two InC(SiMe 3 ) 3 Groups
Author(s) -
Uhl Werner,
Keimling Sven Uwe,
Hiller Wolfgang,
Neumayer Markus
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290406
Subject(s) - chemistry , trimethylsilyl , crystallography , benzene , molecule , bridging (networking) , stoichiometry , yield (engineering) , oxygen atom , monomer , bond length , medicinal chemistry , stereochemistry , crystal structure , organic chemistry , computer network , materials science , computer science , metallurgy , polymer
tetrahedra ‐Tetrakis[tris(trimethylsilyl)methyl]tetraindane( 4 ) ( 1 ) reacts with octacarbonyldicobalt to yield two products, depending on the stoichiometric ratio of the starting compounds: By replacement of one bridging carbonyl group a dicobalt monoindium derivative 2 is formed, which contains a CoCo bond [256.81(5) pm] bridged by one carbonyl and one monoalkylindium group. While 2 is a monomer in benzene solutions, it dimerizes in the solid state by an interaction of the oxygen atom of the bridging carbonyl group to the coordinatively unsaturated In atom of a second molecule across a center of symmetry. Another compound ( 3 ) is formed by the replacement of both bridging carbonyl ligands, which exhibits a strongly distorted Co 2 In 2 tetrahedron with normal CoIn bond lengths of 253.44(6) pm, but long CoCo [280.14(6) pm] and InIn distances [336.18(6) pm].