The new dicyanoruthenium(iii) building block with 2′-hydroxyacetophenone imine for heterobimetallic complexes†
Abstract
A new ruthenium(III)-based building block, trans-(Ph4P)[RuIII(L)2(CN)2] (L = 2′-hydroxyacetophenone imine), has been synthesized and characterized. Reactions of this building block with different MnIII Schiff base (SB) complexes, [Mn(SB)(H2O)2]ClO4, result in 1-D zigzag chain complexes, [RuIII(L)2(CN)2MnIII(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 RuIII and MnIII/CuII centers, whereas 4 and 5 reveal ferromagnetic coupling between the RuIII and MnIII centers through the cyano bridges. Furthermore, magneto-structural correlation for some typical cyano-bridged heterobimetallic RuIII–MnIII/CuII compounds is discussed.