Heavy cyclopropene analogues R 4 SiGe 2 and R 4 Ge 3 (R= SiMe t Bu 2)–New members of the cyclic digermenes family

VY Lee, H Yasuda, M Ichinohe, A Sekiguchi

Index: Lee, Vladimir Ya.; Yasuda, Hiroyuki; Ichinohe, Masaaki; Sekiguchi, Akira Journal of Organometallic Chemistry, 2007 , vol. 692, # 1-3 p. 10 - 19

Full Text: HTML

Citation Number: 3

Abstract

1H-Siladigermirene R4SiGe2 (2a) and 1H-trigermirene R4Ge3 (2b)(R= SiMetBu2) with a GeGe double bond were synthesized by the reaction of tetrachlorodigermane RGeCl2– GeCl2R with dilithiosilane R2SiLi2 and dilithiogermane R2GeLi2, respectively. The skeletal GeGe double bond of 2a is trans-bent (51.0 (2)°) with a bond distance of 2.2429 (6) Å. The reaction of both 2a and 2b with CH2Cl2 resulted in the formation of unusual four- ...