p. 179 - 192
(2007/10/02)1,1',3,3'-tetramethyl-2,2'-biimidazolidinylidene
tris(2,6-dimethylphenyl)chlorogermane
tris(2,3,4,6-tetramethylphenyl)chlorogermane
(C6H5C(CH3)2CH2)3GeCl
tris(pentamethylphenyl)chlorogermane=tris-(pentamethylphenyl)chlorgerman