ISSN:
0009-2940
Keywords:
Dilithium bis(aluminate)
;
methylene-bridged
;
Hexacoordinated carbon atom
;
Dilithiomethane derivative
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Synthesis and Crystal Structure of Li2[(Me3SiCH2)3Al—CH2—Al(CH2SiMe3)3] - a Dilithiomethane Derivative?Reaction of (trimethylsilyl)methyllithium with the methylene-bridged aluminium tetrachloride Cl2Al—CH2—AlCl2 yields dilithium methylenebis[tris(trimethylsilylmethyl)aluminate] (2) as the only isolable product. All attempts for preparing the tetraalkyl analogue have been unsuccessful. The crystal structure of 2 exhibits a hexacoordinated central carbon atom with short Li—C distances. Both lithium atoms and the methylene hydrogens of the Al—CH2— Al unit are almost coplanar. The discussion of the structure and properties leads to the attractive description of 2 as an adduct of tris(trimethylsilylmethyl)-aluminium to dilithiomethane CH2Li2.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240705
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