114403-29-1Relevant academic research and scientific papers
Rhodium Complexes possessing the Unidentate Anion of 2,4-Pentanedione as a Ligand; X-Ray Crystal Structure of Carbonyl(2,4-pentanedionato-O)-bis(tri-isopropylphosphine)rhodium(I)
Yoshida, Shin-ichi,Ohgomori, Yuji,Watanabe, Yoshihisa,Honda, Kazumasa,Goto, Midori,Kurahashi, Masayasu
, p. 895 - 898 (2007/10/02)
Rhodium complexes having the unidentate anion of 2,4-pentanedione as a ligand have been synthesized by the reaction of with highly basic tertiary phosphines.The X-ray crystallographic analysis revealed that the co-ordination chemistry about the Rh atom is square planar with two phosphine ligands in trans positions.The unidentate 2,4-pentanedionate ligand has a trans configuration with respect to the C=C bond.Proton n.m.r. studies indicated a singlet resonance for the methine of the pentanedione anion, which is widely accepted as a proof of the cis configuration.In the i.r. spectra absorptions characteristic of the unidentate pentanedionate were observed in the 1500-1620 cm-1 region, but the ketonic absorptions were unusually low for α,β-unsaturated carbonyls.
