From eiectrolyhcally generated bacteriopheophytin a anion radxal in solution, 10 proton and 4 nitrogen hyperfme couplmg constants, includmg signs, have been measured by ESR, ENDOR and TRIPLE resonance techniques. The expexmental results are compared to those from MO calculations and posnble assignme
The pheophytin a anion radical. 14N and 1H endor and triple resonance in liquid solution
β Scribed by F. Lendzian; K. Mobius; W. Lubitz
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 530 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
Solution \*sM-ENDOR and TRIPLE n~~~~+nce esperiments have been performed on the bacteriochlorophyll a (BChl a) zJ anion and cation radicals enriched in 25hIg. The 2shfg isotropic hyperfime coupling constants for BChl a\* and BChl ar have been determined. The vaIues are in good agreement with those o
From electrolytically generated bacteriochlorophyll a anion radicals in solution, eight proton and four nitrogen hfs constants includirlg signs were measured by ENDOR and TRIPLE resonance. Optimum experimental conditions for ENDOR of different nuclei were examined. The hfs data are compared with res
A variety of isotopically labelled and/or substituted flavins have been converted into their corresponding radical states. Cation and neutral radicals were generated chemically and anion radicals were obtained electrochemically. By performing ENDOR and TRIPLE resonance experiments, complete sets of
rrom the eIectrolyt~cally gcncnted chlorophyll a dmon mdlcal in solutlon, 12 proton sod 4 nrtrogcn hypcrlinc coupling constants, includmg thctr sgns and the number of contnbutmg equwalent nuclcr. were determmed by ESR. CKDOR. and TRIPLE resonance. The data am compared wth recent MO calculations, and