Synthesis, characterization, and crystal structure of platinum(II) and palladium(II) chlorides with an acidic α-diimine ligand

Reaction of the symmetrical α-diimine ligand L with either PtCl2 or PdCl2(C6H5CN)2 affords the square planar d8 complexes 1 and 2, respectively. Both complexes were characterized by NMR spectroscopy and elemental analysis. The solid-state structure of 1, which crystallized in the triclinic space group P1̄ with unit cell parameters a=8.688(2) Å, b=13.840(2) Å, c=14.136(2) Å, α=111.346(14)°, β=103.82(2)°, and γ=102.69(2)°, was established by X-ray crystallography.