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Titolo:
CHELATE RING-OPENING RUTHENIUM COMPLEXES - X-RAY CRYSTAL-STRUCTURE AND SOLUTION STUDIES OF MINOETHYL)DIPHENYLPHOSPHINO(DICHLORO)RUTHENIUM(II)
Autore:
GUO ZJ; HABTEMARIAM A; SADLER PJ; JAMES BR;
Indirizzi:
UNIV EDINBURGH,DEPT CHEM,W MAINS RD EDINBURGH EH9 3JJ MIDLOTHIAN SCOTLAND UNIV EDINBURGH,DEPT CHEM EDINBURGH EH9 3JJ MIDLOTHIAN SCOTLAND UNIV BRITISH COLUMBIA,DEPT CHEM VANCOUVER BC V6T 1Z1 CANADA
Titolo Testata:
Inorganica Chimica Acta
fascicolo: 1-2, volume: 273, anno: 1998,
pagine: 1 - 7
SICI:
0020-1693(1998)273:1-2<1:CRRC-X>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOSPHINE-LIGANDS; METAL-COMPLEXES; DERIVATIVES; IMIDAZOLE; SERIES;
Keywords:
RUTHENIUM COMPLEXES; AMINOPHOSPHINE COMPLEXES; CRYSTAL STRUCTURES; CHELATE RING COMPLEXES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
Z.J. Guo et al., "CHELATE RING-OPENING RUTHENIUM COMPLEXES - X-RAY CRYSTAL-STRUCTURE AND SOLUTION STUDIES OF MINOETHYL)DIPHENYLPHOSPHINO(DICHLORO)RUTHENIUM(II)", Inorganica Chimica Acta, 273(1-2), 1998, pp. 1-7

Abstract

The Ru(II) complex cis,trans-[Ru(Me(2)NCH(2)Ch(2)PPh(2)-P,N)(2)Cl-2] (1) has been characterized in the solid state and in solution. X-ray crystallography showed that complex 1 is monoclinic, space group C-2/c;a = 36.0421, b = 11.4866, c = 31.0540 Angstrom; beta = 104.556 degrees. The structure refined to R = 0.0925 and Rw = 0.223. There are two independent molecules in the unit cell, with normal Ru-P bonds (2.24-2.26 Angstrom), but the Ru-N bonds (2.37-2.42 Angstrom) are 0.2 Angstromlonger than typical values for Ru-N trans to phosphorus. The Cl-Ru-Clbond angles of 1 are 171.78 and 173.14 degrees. Complex 1 is stable in methylene chloride solution and cyclic voltammetry showed that it undergoes a fully reversible one-electron oxidation at 0.326 V. In methanol, however, 1 (both in air or under N-2) undergoes a two-stage ionization/solvolysis with first order constants at 293 K: 5.40 +/- 0.02 X 10(-4) s(-1) for the first step, and 3.29 +/- 0.03 X 10(-5) s(-1) for the second step accompanied by a colour change from red to green. H-1 and P-31{H-1} NMR spectroscopic studies suggest that the solvolysis isaccompanied by P,N-chelate ring-opening. These processes are inhibited by the presence of excess of lithium chloride.

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Documento generato il 19/09/20 alle ore 18:39:30