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Synthetic, Spectroscopic and Structural Studies of the Rhenium(I) Dicarbonyl Complexes of Phosphite, Phosphonite, and Phosphinite Ligands: cis, mer ‐[ReBr(CO) 2 {PPh 3‐n (OR) n } 3 ] (R = Me, Et; n = 1—3)
Author(s) -
Carballo Rosa,
LosadaGonzález Pilar,
VázquezLópez Ezequiel M.
Publication year - 2003
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200390040
Subject(s) - phosphinite , rhenium , dichloromethane , chemistry , ligand (biochemistry) , toluene , stereochemistry , medicinal chemistry , chloroform , organic chemistry , catalysis , biochemistry , receptor , solvent
Abstract The reaction of [ReBr(CO) 5 ] with phosphite and phosphonite ligands in toluene yielded cis, mer ‐[ReBr(CO) 2 L 3 ] ( 2 : L = P(OMe) 3 2a : P(OEt) 3 2b : PPh(OMe) 2 2c : PPh(OEt) 2 2d ). Compounds 2c and 2d were also obtained, as were the phosphinite complexes 2e [L = PPh 2 (OMe)] and 2f [L = PPh 2 (OEt)], by reaction of the corresponding phosphorus ligand with trans, mer ‐[ReBr(CO) 3 L 2 ]. Compounds 2 were all characterized by elemental analysis, mass spectrometry and NMR spectroscopy, and the structures of 2b , 2c and 2d were determined by X‐ray diffractometry. Compounds 2a‐d are stable in chloroform and dichloromethane, but 2e and 2f are transformed into the corresponding trans, mer ‐[ReBr(CO) 3 L 2 ] complexes by a reaction for which a partial mechanism is put forward.