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Título

Multinuclear NMR investigation on organometallic gold(III) pentafluorophenylarylazoimidazole complexes

AutorByabartta, Prithwiraj
Fecha de publicaciónnov-2007
EditorSpringer
CitaciónTransition Metal Chemistry 32(8): 1007-1011 (2007)
ResumenReaction of [Au(C6F5)(tht)2Cl](OTf) with RaaiR′ in CH2Cl2 medium leads to [Au(C6F5)(RaaiR′)Cl](OTf) [RaaiR′ = p-R–C6H4–N=N–C3H2–NN-1-R′, (1–3), abbreviated as N,N′-chelator, where N(imidazole) and N(azo) represent N and N′, respectively; R = H (a), Me (b), Cl (c) and R′ = Me (1), CH2CH3 (2), CH2Ph (3), tht is tetrahydrothiophen]. The maximum molecular peak of [Au(C6F5)(MeaaiMe)Cl] is observed at m/z 599.51 (100 %) in the FAB mass spectrum. Ir spectra of the complexes show –C=N– and –N=N– stretching near at 1590 and 1370 cm−1 and near at 1510, 955, 800 cm−1 due to the presence of pentafluorophenyl ring. The 1H-NMR spectral measurements suggest methylene, –CH2–, in RaaiEt gives a complex AB type multiplet while in RaaiCH2Ph shows AB type quartets. 13C-NMR spectrum of complexes confirm the molecular skeleton. In the 1H-1H-COSY spectrum as well as contour peaks in the 1H-13C HMQC spectrum for the present complexes, assign the solution structure and stereoretentive conformation. The electrochemistry gives the ligand reduction peaks.
Descripción5 pages, 2 figures, 2 tables.
Versión del editorhttp://dx.doi.org/10.1007/s11243-007-0243-1
URIhttp://hdl.handle.net/10261/19241
DOI10.1007/s11243-007-0243-1
ISSN0340-4285 (Print)
1572-901X (Online)
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