Molybdenum-95 nuclear magnetic resonance of a series of phosphine and phosphite substituted molybdenum carbonyls Mo(CO)6?n (L) n (n=1, 2, 3, 4, 5)

Abstract

Molybdenum-95 NMR spectra of a series of phosphine and phosphite substituted molybdenum carbonyls Mo(CO)6-n L n [L=P(OCH3)3 n=1, 2, 3, 4, 5,L=P(OC2H5)3 n=1, 2, 3,L=P(C6H5)3 n=1] including isomers (cis,trans,fac,mer) are reported, A large range of chemical shifts is found for the title compounds. The coupling constants1 J(95Mo-31P) are derived either from95Mo-NMR spectra or31P-NMR spectra. Syntheses of the measured compounds were performed by thermal or photochemical ligand substitution.