On the synthesis and structures of the complexes [RuCl(L)(dppb)(N–N)]PF₆ (L = CO, py or 4-NH₂py; dppb = 1,4-bis(diphenylphosphino)butane; N–N = 2,2′-bipyridine or 1,10-phenanthroline

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• 作者：Marilia I. Fraz&#xe3 ; o Barbosa ; Eliana M.A. Valle ; Salete L. Queiroz ; Javier Ellena ; Eduardo E. Castellano ; Val&#xe9 ; ria R.S. Malta ; Jackson R. de Sousa ; Oscar Piro ; M&#xe1 ; rcio P. de Araujo ; Alzir A.
• 关键词：Ruthenium complexes ; Diphenylphosphine ; Structure ; Carbonyl
• 刊名：Polyhedron
• 出版年：2010
• 出版时间：28 July 2010
• 年：2010
• 卷：29
• 期：11
• 页码：2297-2303
• 全文大小：726 K

文摘

The “Ru(P–P)” unit (P–P = diphosphine) is recognized to be an important core in catalytic species for hydrogenation of unsaturated organic substrates. Thus, in this study we synthesized six new complexes containing this core, including the binuclear complex [(dppb)(CO)Cl₂Ru-pz-RuCl₂(CO)(dppb)] (pz = pyrazine) which can be used as a precursor for the synthesis of cationic carbonyl species of general formula [RuCl(CO)(dppb)(N–N)]PF₆ (N–N = diimine). Complexes with the formula [RuCl(py)(dppb)(N–N)]PF₆ were synthesized by exhaustive electrolysis of these carbonyl compounds or from the precursors [RuCl₂(dppb)(N–N)]. The new complexes were characterized by microanalysis, conductivity measurements, IR and ³¹P{¹H} NMR spectroscopy, cyclic voltammetry and X-ray crystallography.