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7744386 
Journal Article 
Electrochemical synthesis and characterization of tantalum alkoxides 
Yang Sheng-hai; Cai Ya-nan; Yang Hai-ping; Jin Sheng-ming 
2009 
1 
Transactions of Nonferrous Metals Society of China
ISSN: 1003-6326 
ELSEVIER SCIENCE BV 
AMSTERDAM 
19 
6 
1504-1508 
English 
WOS:000272501000024 
Tantalum(V) propoxide (Ta(OPrn)5), isopropoxide (Ta(OPri)5) and butoxide(Ta(OBun)5) were synthesized by electrochemical reactions of corresponding alcohol at sacrificial tantalum anode in the presence of tetraethylammonium chloride as a conductive additive. The pure products were isolated by reduced pressure distillation under 5 kPa. The crystal of Ta(OPri)5 was obtained by recrystallization from hexane at -10 °C. These samples were characterized by Fourier transform infrared spectra (FT-IR), Raman spectra, nuclear magnetic resonance spectra (NMR), TG/DTA and ICP-MS. The results show that direct electrochemical synthesis of metal alkoxides has a high current efficiency and electrolysis yield. These alkoxides have a high purity of 99.97% and can be directly used as the precursor of Ta2O5 films. © 2009 The Nonferrous Metals Society of China. 
electrochemical synthesis; tantalum alkoxides; spectral characterization; thermal analysis 
Frontier Symposium of China Postdoctoral on Materials Science 
Changsha, PEOPLES R CHINA