898253-29-7Relevant academic research and scientific papers
Influence of ligands on the fac underover(?, Δ, h ν) mer isomerization in [RuCl3(NO)(P-P)] complexes.
Von Poelhsitz, Gustavo,de Lima, Renata Cristina,Carlos, Rose Maria,Ferreira, Antonio Gilberto,Batista, Alzir Azevedo,de Araujo, Alexandre Suman,Ellena, Javier,Castellano, Eduardo Ernesto
, p. 2896 - 2909 (2006)
[RuCl3(NO)(P-P)], [P-P = R2P(CH2)nPR2 (n = 1-3) and R2P(CH2)POR2, PR2-CH{double bond, long}CH-PR2, R = Ph and (C6H11)2P-(CH2)2- P(C6H11)2] were obtained and characterized by 31P {1H} NMR, IR spectroscopies and cyclic voltammetry. The structures of fac-[RuCl3(NO)(P-P)], P-P = dppm (1), dppe (2), c-dppen (3) and dppp (4), mer-[RuCl3(NO)(dcpe)] (6a) and mer-[RuCl3(NO)(dppmO)] (7) have been determined by X-ray diffraction. Photochemical isomerization of fac- to mer-[RuCl3(NO)(P-P)] was observed under white light in a CH2Cl2 solution and in solid state. The isomerization processes were followed by IR and 31P {1H} spectra. The mer-[RuCl3(15NO)(dppb)] isomer was used for the definition of the phosphorus atoms in the structure of the complex in solution. The electrochemical study shows that the oxidation/reduction processes observed in these complexes are dependent on both the isomer (fac or mer) and the solvent. In CH2Cl2, the NO+ reduction potentials are less negative for the mer-isomers than for the fac ones, while in CH3CN solvent these potentials are, in general, very close for both isomers.
