MOLECULAR COMPLEXES OF FLAVINS AND PHENOLS, IV. SEMIQUINONE HYDRIODIDE COMPLEXES
نویسندگان
چکیده
منابع مشابه
cadmium II complexes of streptonigrin semiquinone
Semiquinone metal complexes derived from the antitumor antibiotic streptonigrin have been prepared for the first time. Ž . Ž . They were obtained by reduction of the zinc II and cadmium II complexes of the parent aminoquinone ligand with sodium borohydride, followed by air oxidation of the intermediate dihydroquinones. Alternatively, N-benzyldihydronicotinamide Ž . reduction was used to produce...
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-We have found that hydriodic acid can reduce isoalloxazine derivatives to the semiquinone level. Crystals of a solid material, probably an HI complex of the semiquinone hydriodide, containing approximately 100 per cent unpaired spin content, can be obtained from such solutions. The semiquinone hydriodide is also found to form stable 1:1 complexes with various phenols. These may be isolated in ...
متن کاملPreparation and Properties of Two Tris o-Semiquinone Complexes
Dennis G. Brown* and W. Leo Johnson, III Department of Chemistry University of Idaho Moscow, Idaho, U. S. A. Z. Naturforsch. 34b, 712-715 (1979); received January 9, 1979 Semiquinone, Iron, Chromium Tris o-benzosemiquinone complexes of iron and chromium are reported. These complexes contain three 3,5-di-£-butyl-o-semiquinato ligands and a tri valent metal ion. The iron complex can be obtained f...
متن کاملsynthesis and characterization of some new cyclometalated organoplatinum(ii) complexes containing phosphite ligand
در این تحقیق روشی جهت سنتز یک سری از کمپلکس های پلاتین (ii) حاوی لیگاند های دهنده ی فسفری شامل فسفیت و فسفین ارائه شده است. واکنش پیش ماده ی پلاتین (ii)،trans/cis- [ptcl2(sme2)2] ، با 2 اکی مولار از لیگاند p(oph)3در حلال بنزن کمپلکس1، cis-[ptcl2(p(oph)3)2] را تولید می نماید. جهت سنتز کمپلکس سایکلو متال فسفیتی، کمپلکس 1 با 1 اکی والان واکنشگر ptcl2 در حلال زایلن در شرایط رفلاکس زیر گاز آرگون م...
synthesis and characterization of potentially biological active cyclometallated organoplatinum(ii) complexes
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1965
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.53.2.237