文章基本信息

标题：Blue copper proteins: Synthesis, spectra, and structures of CuIN3(SR) and CuIIN3(SR) active site analogues
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作者：Jeffery S. Thompson ; Tobin J. Marks ; James A. Ibers 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1977
卷号：74
期号：8
页码：3114-3118
DOI：10.1073/pnas.74.8.3114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The reaction of Cu(SR) or [Cu(SR)][ClO4] derivatives (SR = p-nitrobenzenethiolate or O-ethylcysteinate) with potassium hydrotris(3,5-dimethyl-1-pyrazolyl)borate produces redox pairs of the stoichiometry CuIN3(SR) and CuIIN3(SR). These complexes are well-defined synthetic approximations to the proposed N3S binding sites of blue (type 1) copper electron transfer proteins. The compounds were investigated by a variety of chemical and spectral (optical, resonance Raman, and electron paramagnetic resonance) techniques; the complex K[Cu(hydrotris(3,5-dimethyl-1-pyrazolyl)borate)(p- NO2C6H4S]-2 acetone was also studied by single-crystal x-ray diffraction methods. The spectrochemical characteristics of the CuIIN3(SR) species are in large part similar to the native system and thus provide some perspective regarding the origin of the unique type 1 spectral parameters and electron transfer properties.
关键词：type 1 copper proteins ; N₃S coordination ; charge transfer transitions ; resonance Raman spectra ; electron paramagnetic resonance spectra