Hydrolysis of <i>tert</i>-Butyl and Phenyl Ferrocenyldichlorogermanes: Characterization of Di-<i>tert</i>-butyldiferrocenyldigermoxanediol and 1,3,5-Triphenyl-1,3,5-triferrocenylcyclotrigermoxane
作者:Yongqiang Zhang、Francisco Cervantes-Lee、Keith H. Pannell
DOI:10.1021/om020788p
日期:2003.2.1
The hydrolysis of ferrocenyl-tert-butyldichlorogermane (Fc(t-Bu)GeCl2, 1a, Fc = (eta(5)-C5H5)-Fe(eta(5) -C5H4)) resulted in the formation of the digermoxanediol [Fc(t-Bu)(HO)Ge](2)O (2), which in the solid state forms intermolecularly hydrogen-bonded dimeric 2a or double-chain 2b, structures dependent upon the solvent used for recrystallization. By contrast, similar hydrolysis of ferrocenylphenyldichlorogermane (FcPhGeCl(2), 1b) led to the formation of the cis and trans isomers of (FcPhGeO)(3) (3a and 3b) as a 1:4 ratio mixture, respectively. The cis isomer, 3a, can be converted to the thermodynamically more stable trans isomer, 3b. The molecular structures of 2a, 2b, 3a, and 3b have been determined by X-ray diffraction analysis.