Halogen-free GeO2 conversion: electrochemical reduction vs. complexation in (DTBC)2Ge[Py(CN)n] (n = 0…2) complexes

• DOI: 10.1039/c8dt03397h
• Publication Date: 2018-11-06T18:01:59Z
• Authors: Elena N. Nikolaev...; Evgeniya A. Saverina; Alyona A. Starikova; Amel Farhati; Mikhail A. Kiskin; Mikhail A. Syroes...; Mikhail P. Egorov; Viatcheslav V. Jo...
• Keywords: Tetrahydrofuran; Dimethyl formamide

3,5-di-tert-Butylcatecholate (DTBC) germanium complexes (DTBC)2Ge[Py(CN)n]2 (n = 0…2) have been synthesized from GeO2, 3,5-di-tert-butylcatechol and cyano-substituted pyridines Py(CN)n characterized by elemental analysis, NMR, IR UV-VIS spectroscopy. The structure of 1 (with 4-cyanopyridine) has determined X-ray single crystal analysis. spectra shown that these are stable in CH3CN, toluene CH2Cl2 solutions; contrast, they rapidly decomposed dimethylformamide tetrahydrofuran. Complexes 2 4-cyano 3-cyanopyridine) electrochemically reducible toluene/1 M Bu4NPF6 at E -1.3…-1.7 V vs. AgCl. quantum-chemical study is accordance with the unsuccessful attempts to obtain analogous derivatives 2-cyanopyridine 2,6-dicyanopyridine.