摘要
Kelet等[1]研究CoTMAPI催化水制取氢气的反应时指出,活性中心是一价钴卟啉.曹锡章等[2]研究钴卟啉催化CO2电化学还原时指出,活性中心也是一价钴卟啉.然而,不稳定价态的金属卟啉配合物的制备和性质研究较为困难.光谱电化学的迅速发展为不稳定价...
The electrochemical and spectroelectrochemical behaviour of tetra ( α naphythyl) tetrabenzoporphyrin cobalt complex, TNTBPCo, was studied by cyclic voltammetry, in situ FTIR and in situ UV Vis spectroelectrochemistry. The different oxidation states of the complex were obtained by controlling potential electrolysis at different potentials, and this electronic spectra and molecular vibration spectra were studied. The first and second redox processes of TNTBPCo(Ⅱ) correspond to the centre metal cobalt(Ⅱ) to form TNTBPCo(Ⅲ) + or TNTBPCo(Ⅰ) -. The third reduction step is the addition of one electron to the porphyrin ring. The Soret band of TNTBPCo moves to low wavelength as the oxidation state of the complex decreases. The oxidation state sensitive bands of TNTBPCo were found to be in the 1 660, 1 476, 1 142, 924 and 998 cm -1 and these bands shift to low frequency as the oxidation state of the centre metal decreases.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第7期1026-1028,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
吉林省科委科学基金
关键词
四萘基
四苯并卟啉钴
钴卟啉
光谱电化学
Tetra ( α naphythyl)tetrabenzoporphyrin cobalt complex, Cyclic voltammetry, In situ UV Vis spectroelectrochemistry, In situ FTIR spectroelectrochemistry