- Synthesis and characterization of the mer-[RuCl3(NO)(dppb)] isomer. X-ray structures of fac-[RuCl3(NO)(dppm)], cis-[RuCl2(dppm)2] and mer-[RuCl3(NO)(dppb)] [dppm=1,2-Bis(diphenylphosphino)methane and
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The fac-[RuCl3(NO)(dppm)] (1) and cis-[RuCl2(dppm)2] (2) complexes were obtained with co-crystallization in the solid state from the reaction of RuCl3(NO) with the diphosphine in dichloromethane. mer-[RuCl3
- Batista, Alzir A.,Pereira, Cid,Wohnrath, Karen,Queiroz, Salete L.,De A. Santos, Regina H.,Do P. Gambardella, Maria Teresa
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p. 2079 - 2083
(2008/10/09)
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- Synthesis and characterization of [RuCl3(P-P)(H2O)] complexes; P-P = achiral or chiral, chelating ditertiary phosphine ligands
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The reaction of the dinuclear [RuCl2(dppb)]2(μ-dppb) (dppb = 1,4-bis(diphenylphosphino)butane) with Cl2 in MeOH for ~30 min at room temperature gives the bright-red solid mer-RuCl3dppb)(H2O) (1); Cl2 treatment for ~10 min affords the red-brown, mixed valence complex [RuCl(dppb)]2(μ-Cl)3 (2). Controlled bulk coulometric reduction of 50% of the content of a CH2Cl2 solution of 1 also produces 2, formed by the reaction of 1 with RuCl2(dppb) produced in situ during the electrolysis. Complexes 1 and 2 were characterized by spectroscopic techniques [including electron spin resonance (ESR)], magnetic moments and cyclic voltammetry, and the structure of 1 was determined by X-ray diffraction. The structure shows that the aquo ligand forms hydrogen bonds with two cis-chlorine ligands of the neighboring molecule of the complex; this interaction gives rise to exchange coupling between two Ru(III) centers that is reflected in the ESR spectrum. A species 3 analogous to 1 has been obtained with the diop ligand [diop = (2R,3R)- or (2S,3S)-O-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane], on using RuCl2(diop)(PPh3) or [RuCl(diop)]2(μ-Cl)3 as precursors. The RuCl3(P-P)L complexes (P-P = dppb, diop; L = dimethyl sulfoxide, MeOH) are readily synthesized from 1 or 3.
- Dinelli, Luis R.,Batista, Alzir A.,Wohnrath, Karen,de Araujo, Marcio P.,Queiroz, Salete L.,Bonfadini, Marcos R.,Oliva, Glaucius,Nascimento, Otaciro R.,Cyr, Paul W.,MacFarlane, Kenneth S.,James, Brian R.
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p. 5341 - 5345
(2008/10/08)
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