1043617-90-8Relevant articles and documents
Substituent effects in linear organogermanium catenates
Amadoruge, Monika L.,Gardinier, James R.,Weinert, Charles S.
, p. 3753 - 3760 (2009/02/06)
The trigermanes EtOCH2CH2Ge(R2)Ge(Ph 2)Ge(R2)CH2CH2OEt (R = Et, Bu, Ph) and Ph3GeGe(Bu2)-Ge(Ph2)CH2CH 2OEt as well as the two tetragermanes Ph3GeGe(Bu 2)Ge(Ph2)Ge(R2)CH2CH2OEt (R = Et, Bu) have been prepared and characterized. The absorption and electrochemical attributes of these species, along with the butylated oligogermane series Ph3Ge(GeBu2)nCH 2CH2OEt (n = 1-3) and the digermanes Ph 3GeGeR3 (R = Et, Bu, Pr', Ph), have been investigated using UV/visible spectroscopy and cyclic voltammetry. In general, the position of the absorption maximum shifts to lower energy and the oxidation potential decreases with increasing chain length. Variation of the organic substituents at germanium was also found to have a measurable effect on these spectral and electrochemical features. The experimental results were correlated with the energies of the HOMO and LUMO in these molecules, which were determined by density functional theory (DFT) calculations.