Synthesis, Structural Characterization, Solution Chemistry, and Preliminary Biological Studies of the Ruthenium(III) Complexes [TzH][ trans -RuCl 4 (Tz) 2 ] and [TzH][ trans -RuCl 4 (DMSO)(Tz)]·(DMSO), the Thiazole Analogues of Antitumor ICR and NAMI-A