Synthesis and structure of two novel trans-platinum complexes

Here for the first time the synthesis and characterization of two new trans-platinum complexes, trans-[PtCl(2){HN=C(OH)C(6)H(5)}(2)] (compound 1) and trans-[PtCl(4)(NH(3)){HN=C(OH)(t)Bu}] (compound 2) [with (t)Bu = C(CH(3))(3)] are described. The structures have been characterized using nuclear magnetic resonance spectroscopy and X-ray single-crystal diffraction. In compound 1 the platinum cation, at the inversion center, is in the expected square-planar coordination geometry. It is coordinated to two chloride anions, trans to each other, and two nitro­gen atoms from the benzamide ligands. The van der Waals interactions between the molecules produce extended two-dimensional layers that are linked into a three-dimensional structure through π⋯π intermolecular interactions. In compound 2 the platinum cation is octahedrally coordinated by four chloride anions and two nitro­gen atoms from the pivalamide and ammine ligands, in trans configuration. The molecular packing is governed by intermolecular hydrogen bonds and van der Waals interactions.