ISSN:
0044-2313
Keywords:
77Se.n.m.r.
;
coordination compounds
;
unsaturated selenium ligands
;
relaxation times T1
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
77Se-NMR-Investigations of Bis-Chelates with Heterocyclic 1,2-Dichalcogenolates77Se-n.m.r. chemical shifts of metal(II)- and metal(III)-bis-chelates of 1,3-diselenole-2-selone-4,5-diselenolate (dsis), 1,3-dithiole-2-selone-4,5-diselenolate (dsise), 1,3-dithiole-2-selone-4,5-dithiolate (dmise) and 1,3-dithiole-2-thione-4,5-diselenolate (dsit) and relaxation times T1 (spain-lattice relaxation time) of the Se nucleus of (Bu4N)2[Zn(dsit)2], (Bu4N)2[Zn(dmise)2] and (Bu4N)2[Zn(dsise)2] are reported. Comparisons are made between 77Se-n.m.r. chemical shifts and the nature of coordination centre and coordination geometry.
Notes:
77Se-NMR-Untersuchungen77Se-NMR-chemische Verschiebungen von Metall(II)- und Metall(III)-Bis-Chelaten des 1,3-Diselenol-2-selon-4,5-diselenolats (dsis), 1,3-Dithiol-2-selon-4,5-diselenolats (dsise), 1,3-Dithiol-2-selon-4,5-dithiolats (dmise) und 1,3-Dithiol-2-thion-4,5-diselenolats (dsit) sowie Spin-Gitter Relaxationszeiten T1 der Se-Atome in den Chelaten (Bu4N)2[Zn(dsit)2], (Bu4N)2[Zn(dmise)2] und (Bu4N)2[Zn(dsise)2] werden mitgeteilt und Zusammenhänge zwischen der Lage der 77Se-Resonanzsignale und der Art des Koordinationszentrums, der Oxidationszahl des Zentralions und der Koordinationsgeometrie diskutiert.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19916000113
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