The new dicyanoruthenium(III) building block with 2 '-hydroxyacetophenone imine for heterobimetallic complexes

摘要

A new ruthenium(III)-based building block, trans-(Ph4P)[Ru-III(L)(2)(CN)(2)] (L - 2'-hydroxyacetophenone imine), has been synthesized and characterized. Reactions of this building block with different Mn-III Schiff base (SB) complexes, [Mn(SB)(H2O)(2)]ClO4, result in 1-D zigzag chain complexes, [Ru-III(L)(2)(CN)(2)Mn-III(SB)](n) (SB = salen, 1; salcy, 2; nappa, 4; napcy, 5), respectively. X-ray crystallographic studies reveal that each of the MnIII centers has a distorted octahedral environment, while complex 3 possesses a single cationic chain structure consisting of [Cu(chxn)(2)][Ru(L)(2)(CN)(2)](n) units and their corresponding [Ru(L)(2)(CN)(2)](-) anions. Compounds 1-3 exhibit antiferromagnetic coupling between the Ru-III and Mn-III/Cu-II centers, whereas 4 and 5 reveal ferromagnetic coupling between the Ru-III and Mn-III centers through the cyano bridges. Furthermore, magneto-structural correlation for some typical cyano-bridged heterobimetallic Ru-III-Mn-III/Cu-II compounds is discussed.