Oxygen-17 and carbon-13 relaxation studies of metal carbonyls: improved determination of 17O electric quadrupole couplings

Abstract

Rotational correlation times for six organometallic carbonyl complexes have been measured by ¹³C spin–lattice relaxation time and ¹³C-{¹H} nuclear Overhauser enhancement measurements of the organic ligands. Oxygen-17 T₁ n.m.r. measurements on the carbonyl groups yielded the ¹⁷O electric quadrupole-coupling constants. The values show structural variation and so could be useful in the assignment of ¹⁷O resonances.