摘要:
Reactions of 0.5 eq. of the dinuclear complexes [(eta(6)-arene)Ru(mu-Cl)Cl](2) (arene = eta(6)-C6H6, eta(6)-p-(PrC6H4Me)-Pr-i) and [(Cp*)M(mu-Cl)Cl](2) (M = Rh, Ir; Cp* = eta(5)-C5Me5) with 4,6-disubstituted pyrazolyl-pyrimidine ligands (L) viz. 4,6-bis(pyrazolyl) pyrimidine (L1), 4,6-bis(3-methyl-pyrazolyl)pyrimidine (L2), 4,6-bis(3,5-dimethyl-pyrazolyl) pyrimidine (L3) lead to the formation of the cationic mononuclear complexes [(eta(6)-C6H6)Ru(L)Cl](+) (L = L1, 1; L2, 2; L3, 3), [(eta(6)-p-(PrC6H4Me)-Pr-i)Ru(L)Cl](+) (L = L1, 4; L2, 5; L3, 6), [(Cp*)Rh(L)Cl](+) (L = L1, 7; L2, 8; L3, 9) and [(Cp*)Ir(L)Cl](+) (L = L1, 10; L2, 11; L3, 12), while reactions with 1.0 eq. of the dinuclear complexes [(eta(6)-arene)Ru(mu-Cl)Cl](2) and [(Cp*)M(mu-Cl)Cl](2) give rise to the dicationic dinuclear complexes [{(eta(6)-C6H6)RuCl}(2)(L)](2+) (L = L1, 13; L2, 14; L3, 15), [{(eta(6)-p-(PrC6H4Me)-Pr-i)RuCl}(2)(L)](2+) ( L = L1, 16; L2, 17; L3, 18), [{(Cp*)RhCl}(2)(L)](2+) (L = L1, 19; L2, 20; L3, 21) and [{(Cp*)IrCl}(2)(L)](2+) (L = L1 22; L2, 23; L3 24). The molecular structures of [3]PF6, [6]PF6, [7]PF6 and [18](PF6)(2) have been established by single crystal X-ray structure analysis. (C) 2009 Elsevier B.V. All rights reserved.