Rhodium carbonyl complexes featuring carbodiphosphorane-based pincer ligands. (1st March 2021)

• Record Type: Journal Article
• Authors: Xu, Weiqin; Maser, Leon; Alig, Lukas; Langer, Robert
• Is Part Of: Polyhedron. Volume 196(2021)
• Publication Date: 2021-03-01
• Subjects: Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2020.115018
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Abstract: The coordination of a pincer ligand with a protonated carbodiphosphorane (CDP) as central donor group, [(dppm)2 CH] + (1 ), in the rhodium(I) complex [({dppm}2 CH)RhCl(CO)] + (2 ) is reported (dppm = 1, 1-bis(diphenylphosphino)methane). In contrast to related iridium(I) precursors, no C-H-oxidative addition is observed with [RhCl(CO)2 ]2 in this reaction. The different reactivity of rhodium(I) and iridium(I) precursors is investigated by means of density functional theory (DFT). Finally, the CDP-based pincer-type complex [({dppm}2 C)Rh(CO)] + (3 ) was obtained by deprotonation of complex 2 .