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Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS
Alternative Title叶绿素稀土配位结构的EXAFS研究
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)
2000
Source PublicationACTA CHIMICA SINICA
Volume58Issue:5Pages:559-562
Corresponding AuthorUniv 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
SubtypeArticle
AbstractDouble 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.
KeywordLa substituted chlorophyll a EXAFS MCD molecular structure
Subject AreaChemistry
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Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000087607200015
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/237954
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
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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