Aspects of anionic rhodium complexes. Ligand effects

• Published in: Journal of organometallic chemistry Vol. 279; no. 1; pp. 171 - 179
• Main Authors: Chan, Albert S.C., Shieh, Huey-Sheng, Hill, Jeffrey R.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.01.1985; Elsevier Science
• Subjects: Catalysis; Catalysts: preparations and properties; Catalytic reactions; Chemistry; Exact sciences and technology; General and physical chemistry; General. Nomenclature, chemical documentation, computer chemistry; Theory of reactions, general kinetics; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Rhodium Carbonyl Complexes; Organic ligand; Anionic complex; Rhodium Complexes; Catalyst
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/0022-328X(85)87015-7

As an aid to the understanding of the mechanistic details of the rhodium-catalyzed hydroformylation of formaldehyde, a proposed active catalyst, [Rh(CO) 3(PPh 3)] −, was synthesized and characterized. Other anionic rhodium complexes such as [Rh(CO) 3(PPh 2Me)] −, [Rh(CO) 3(PPhMe 3)] −, [Rh(CO) 3)(PMe 3)] −, [Rh(CO) 2(Diphos)] −, and [Rh(CO) 2(P(OPh) 3) 2] −, were also synthesized and studied. The molecular structure of [Rh(CO) 3(PPh 3)] −, [Rh(CO) 2(Diphos)] −, and [Rh(CO) 2(P(OPh 3) 2) were determined by single crystal X-ray diffraction studies. The chemistry involved in the syntheses of these complexes and the ligand effects related to them are discussed.