Transition metal carbonyl compounds containing intramolecular nucleophiles: Crystal structure of [(η 5-C 5H 4(CH 2) 3OH)Mo(CO) 3] 2

Abstract

Compounds of the form [(η 5-C 5H 4R)Mo(CO) 3] 2, where R is a pendant alcohol (or its triphenylmethyl ether), were synthesized. There is no indication of nucleophilic interaction between the alcohol and the carbonyl ligands. The X-ray structure of the compound, where R = -(CH 2) 3OH, was solved by heavy atom and Fourier methods (space group P 1 , a = 7.487(3) Å, b = 7.713(3) Å, c = 10.902(7) Å, α = 99.36(4)°, β = 81.46(4)°, γ = 115.26(3)°, V = 563.0(10) Å 3, Z = 1), and refined by full-matrix least-squares to S (goodness of fit) = 1.47 and R = 0.057 (3087 reflections). The alcohol group was found to be situated away from the carbonyl groups, involved in a weak intermolecular hydrogen bond.