Complexes of hybrid ligands. Synthesis of a fluoro-alcohol diarylphosphino ligand and its complexes with platinum(2+), palladium(2+), nickel(2+), cobalt(2+), copper(1+), and rhodium(3+): crystal and molecular structure of a trans square-planar nickel(2+) complex with two bidentate ligands showing cis-trans isomerism in solution