Water soluble (η6-arene) ruthenium(II) complexes incorporating marine derived　bioligand: Synthesis, spectral and structural studies

摘要

A series of water soluble compounds of general formula [{(η~6-arene)Ru(HMP)Cl}], [η~6-arene = η~6-cymene (1), η~6-HMB (2), η~6-C_6H_6 (3); HMP = 5-hydroxy-2-(hydroxymethyl)-4-pyrone] have been prepared by the reaction of [{(η~6-arene) RuCl_2}_2] with HMP. The complexes 1 and 2 react with NaN_3 to give in excellent yield tetra-azido complexes [{(η~6-arene)Ru(lN_3)N_3}_2] (arene = cymene 4, HMB = 5) but similar reaction of complex 3 with NaN_3 yielded di-azdo complex [{(η~6-C_6H_6)Ru(μN_3)Cl}_2] (6). Reaction of [{(η~6- arene)Ru(μN_3)Cl}_2] with HMP in the presence of NaOMe resulted in the formation of azido complex [{(η~6-arene)Ru(HMP)N_3}]. Mono and dinuclear complexes [{(η~6-arene)Ru(HMP)(L_1)}]~+ and [{(η~6-arene) Ru(HMP)}_2(μL_2)]~(2+) were also prepared by the reaction of complexes 1 and 2 with the appropriate ligand, L1 or L2 in the presence of AgBF_4 (L_1 = PyCN, DMAP; L_2 = 4,40-bipy, pyrazine). The complexes are characterized on the basis of spectroscopic data and molecular structures of three representative compounds have been determined by single crystal X-ray diffraction study.