Determination of double decker sandwich structured La-substituted chlorophyll a by EXAFS
As a representative natural porphyrin derivative, it is interesting to know the chemical form of lanthanide in chlorophyll a. We select the natural fern dicranopteris dichotoma, the most lanthanide-concentrated plant known, to isolate the chlorophyll a for our study. It is found by EXAFS that lantha...
| Veröffentlicht in: | Journal of synchrotron radiation. - 1999. - 8(2001), Pt 2 vom: 01. März, Seite 996-7 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Zugriff auf das übergeordnete Werk: | Journal of synchrotron radiation |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Chlorophyll 1406-65-1 Lanthanum 6I3K30563S Magnesium I38ZP9992A Chlorophyll A YF5Q9EJC8Y |
| Zusammenfassung: | As a representative natural porphyrin derivative, it is interesting to know the chemical form of lanthanide in chlorophyll a. We select the natural fern dicranopteris dichotoma, the most lanthanide-concentrated plant known, to isolate the chlorophyll a for our study. It is found by EXAFS that lanthanum substitutes in the magnesium position in chlorophyll and coordinates with the porphyrin ring. The lanthanum is seen to have a similar coordination structure to a sandwich-type lanthanide complex, with the La surrounded by eight nitrogen atoms from two porphyrin rings with average La-N bond length of 2.65 A |
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| Beschreibung: | Date Completed 06.09.2001 Date Revised 05.06.2019 published: Print Citation Status MEDLINE |
| ISSN: | 0909-0495 |