| 血红素C十一肽含氰络合物的共振喇曼光谱 |
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| 引用本文： | 何季平,尤乃亭,陈震华.血红素C十一肽含氰络合物的共振喇曼光谱[J].光散射学报,1991(Z1). |
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| 作者姓名： | 何季平 尤乃亭 陈震华 |
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| 作者单位： | 武汉工业大学材料研究与测试中心，美国佐治亚理工学院化学系，武汉大学化学系 |
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| 摘 要： | 我们研究了血红素C+-肽含氰络合物的共振喇曼光谱。我们的实验结果证明,氰化物可以很高的亲和力与血红素C+-肽生成低自旋三价铁的络合物其Fe(Ⅲ)-CN~-伸缩振动频率为462cm~(-1),它比血红素C+-肽一氧化碳络合物中的Fe(Ⅱ)-CO伸缩振动频率509cm~(-1)要低47cm~(-1)
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| 关 键 词： | 血红素C十一肽含氰络合物 喇曼光谱 血红素C十一肽 |
Resonance Raman Spectroscopy of Cyanomet Heme C Undecapeptide |
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| He Jiping,Yu Naiteng,Chen Zhenhua,Centre of Research and Analysis of Materials,Wuhan University of Technology,China." School of Chemistry,Georgia Institute of Technology,Atlanta,Georgia,U,S.A. Departement of Chemistry,Wuhan University,China.Resonance Raman Spectroscopy of Cyanomet Heme C Undecapeptide[J].Chinese Journal of Light Scattering,1991(Z1). |
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| Authors: | He Jiping Yu Naiteng Chen Zhenhua Centre of Research and Analysis of Materials Wuhan University of Technology China" School of Chemistry Georgia Institute of Technology Atlanta Georgia U SA Departement of Chemistry Wuhan University China |
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| Abstract: | Heme C undecapeptide is a protolytic fragment of horse heart ferricytochrome C from residue 11-21 (H11) containig the covalently bonded heme and the intrinsic histidine. Cyanide ion binds to heme C undecapeptide with a very high affinity to form low-spin iron (Ⅲ) complexes. The Fe(Ⅲ)-CN~- stretching frequency and the bound CN stretching fre- quency in cyanoment heme C undecapeptide were detected at 462 CM~(-1) and 2082 CM~(-1). The v (Fe(Ⅲ)-CN~-) observed at 462cm~(-1) is 47 CM~(-1) lower than the v(Ⅲ)-CO) frequency at 509 CM~(-1). There indicated that the pair elec- trons of both CN- and CO ligands coordinate to the d_z~2 orbital to form a σ bond. But there may be greater π bonding between dπ (Fe) and π* (CO). |
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| Keywords: | Cyanomet Heme C undecapeptide Raman Spectra and Heme C undecapeptide |
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