Synthesis, crystal structure and magnetic properties of a chloranilate-bridged manganese(II) chain compound: [Mn(bipy)(CA)]n (bipy = 2,2′-bipyridine, CA = chloranilate anion)

The compound [Mn(bipy)(CA)](n) (where bipy is 2,2'-bipyridine and CA(2-) is the dianion of 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone) has been synthesized and its crystal structure determined by single-crystal X-ray diffraction at room temperature. The crystal is built from infinite chains of chloranilate-bridged manganese(II) affording a zigzag structure, with the bipyridine ligands being stacked between the chains. The variable-temperature (2.0-300 K) magnetic susceptibility and EPR data are reported and a weak antiferromagnetic exchange interaction is observed with the exchange parameter estimated as J = -0.20 cm(-1). Copyright (C) 1996 Elsevier Science Ltd