Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS
Wei, ZG; Hong, FS; Zhao, GW; Tao, Y; Hu, TD; Liu, T; Xie, YN; Tao Y(陶冶); Hu TD(胡天斗); Liu T(刘涛); Xie YN(谢亚宁)
刊名ACTA CHIMICA SINICA
2000
卷号58期号:5页码:559-562
关键词La substituted chlorophyll a EXAFS MCD molecular structure
学科分类Chemistry
其他题名叶绿素稀土配位结构的EXAFS研究
通讯作者Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Synchrotron Radiat Lab, Beijing 100039, Peoples R China ; Inst Rock & Mineral Anal, Beijing 100037, Peoples R China ; Univ Sci & Technol China, Grad Sch, Beijing 100039, Peoples R China
文章类型Article
英文摘要Double decker sandwich lanthanoid porphyrins have been synthesized and characterized systematically. Chlorophyll. is a representative of natural porphyrin derivatives, It is therefore interesting to study the chemical form of lanthanide in chlorophyll. We synthesized Lanthanum(III) Chlorophyll a derivatives, whose UV - vis and IR spectra confirm the coordination of La(III) to the porphyrin rings. MCD spectra show the special bands in Soret band region, which indicate a transition from sandwich structure porphyrin complexes. By extended X - ray absorption fine structure (EXAFS) method, it is found that the molecular structure of synthesized La - Chl a can be well fitted by the double decker sandwich structure model that La is surrounded by eight nitrogen atoms from two porphyrin rings. The MCD and EXAFS results indicate that the La in chlorophyll a exist as a sandwich shaped complexes with an average La - N bond length of 0.261 nm. To our best knowledge, this is the first example of La - Chl a with a double decker sandwich molecular structure.
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
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语种英语
WOS记录号WOS:000087607200015
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237954
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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Wei, ZG,Hong, FS,Zhao, GW,et al. Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS[J]. ACTA CHIMICA SINICA,2000,58(5):559-562.
APA Wei, ZG.,Hong, FS.,Zhao, GW.,Tao, Y.,Hu, TD.,...&谢亚宁.(2000).Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS.ACTA CHIMICA SINICA,58(5),559-562.
MLA Wei, ZG,et al."Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS".ACTA CHIMICA SINICA 58.5(2000):559-562.
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