Nuclear Magnetic Resonance Studies of Coordination Compounds

Abstract

The applicability of donor and metal atom nmr to coordination chemistry is briefly reviewed. The following structural studies are discussed: (1) the use of ³¹P resonances for the determination of molecular geometry of complexes [RuCl₂(QP)], [Fe(NCS)₂(QP)] and [W(CO)₃(QP)] (QP = [o-Ph₂P•C₆H₄]₃P); (2) the use of ¹³C resonances for the formulation of the carbon moiety C₈H₁₁•OCH₃ coordinated to a palladium atom and (3) the use of ¹⁴N to establish the nature of the donor atom in a number of thiocyanato-complexes. It is further shown that proton-noise decoupled ³¹P spectra can be conveniently used to obtain activation parameters for ligand exchange in complexes [Ni{P(OR)₃}₄]. A possible interpretation of changes in ¹|J_{¹⁰⁵Pt-¹⁵N}| parameters, in platinum complexes containing primary amines, in terms of selective hybridization at the platinum atom is presented. Finally, possible future developments in nmr studies of coordination compounds are briefly outlined.