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Titolo:
Rigid five-coordinate diorganotin derivatives of oxalic acid diamides, studied by Sn-119-NMR and X-ray structural analysis
Autore:
Contreras, R; Jimenez-Perez, VM; Camacho-Camacho, C; Guizado-Rodriguez, M; Wrackmeyer, B;
Indirizzi:
Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, Mexico City 07000, DF, Mexico Inst Politecn Nacl Mexico City DF Mexico 07000 ico City 07000, DF, Mexico Univ A Metropolitana Xodimilco, Dept Sistemas Biol, Mexico City 04960, DF,Mexico Univ A Metropolitana Xodimilco Mexico City DF Mexico 04960 960, DF,Mexico Univ Bayreuth, Anorgan Chem Lab, D-95440 Bayreuth, Germany Univ Bayreuth Bayreuth Germany D-95440 em Lab, D-95440 Bayreuth, Germany
Titolo Testata:
JOURNAL OF ORGANOMETALLIC CHEMISTRY
fascicolo: 2, volume: 604, anno: 2000,
pagine: 229 - 233
SICI:
0022-328X(20000616)604:2<229:RFDDOO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLARIZATION TRANSFER; MAGNETIC-RESONANCE; NMR-SPECTRA; COUPLING-CONSTANTS; C-13; ENHANCEMENT; STATE; PARAMETERS; NUCLEI;
Keywords:
tin; amides; NMR; isotope effects; X-ray;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Contreras, R Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, AP 14-740,Mexico City 07000, DF, Mexico Inst Politecn Nacl AP 14-740 Mexico City DF Mexico 07000 xico
Citazione:
R. Contreras et al., "Rigid five-coordinate diorganotin derivatives of oxalic acid diamides, studied by Sn-119-NMR and X-ray structural analysis", J ORGMET CH, 604(2), 2000, pp. 229-233

Abstract

Bis(2-hydroxy-3, 5-di-tert-butyl-phenylanilido) oxalic acid reacts with diorganotin dichlorides, R2SnCl2, in the presence of triethylamine to give the polycyclic bis(diorganotin) derivatives 1, in which the surroundings of each tin atom correspond to a distorted trigonal bipyramid with one nitrogenand two carbon atoms in the equatorial and two oxygen atoms in the axial positions. The solid state structure was established for la (R = Me) by X-ray analysis, and the agreement between the Sn-119 chemical shift in the solid state and in solution suggests that this structure is retained in solution. It was possible for the first time to determine isotope-induced chemicalshifts (1)Delta(12/13)C(Sn-119) for five-coordinate tin nuclei at natural.abundance of C-13. A positive sign of (1)Delta(12/13)C(Sn-119) was found for R = Me (1a), Bu (1b) and Ph (1c). (C) 2000 Elsevier Science S.A. All rights reserved.

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Documento generato il 27/11/20 alle ore 22:05:27