Platinum complexes with unsaturated amines. Part VIII. The ultraviolet spectra of platinum–olefin complexes of the type [(ol)PtCl3]–(ol = olefin)

Abstract

The ultraviolet spectra of a number of platinum–olefin complexes [(ol)PtCl₃]^–(ol = C₂H₄, C₃H₅OH, C₃H₅NH₃⁺, C₄H₇NEt₃⁺, and C₃H₅PEt₃⁺) show three main bands in the region 31,000–45,000 cm.^–1, which are assigned to metal d to olefin π* transitions. This assignment gives the order of the relative energies of the d orbitals in these complexes as d_x²–y² > d_xy > d_z² > d_yz > d_xz.