Different types of structure among the transition metal complexes of 1,4-naphthalene di-(2-oxyacetate) (L) are observed. Cobalt(II) 1,4-naphthalene di-(2-oxyacetate) complex is a tetranuclear complex. This tetranuclear complex is formed by interlinking two dinuclear cobalt cores having aqua and carboxylate bridges. Dinuclear cores of this complex break down on reaction with pyridine (py) molecules to form a coordination polymer having mononuclear repeat units. One of the carboxylate group of L bridges two manganese ions of manganese(II) 1,4-naphthalene di-(2-oxyacetate) coordination polymer and other carboxylate end of the ligand remains uncoordinated. A spiral five coordinated carboxylate coordination polymer having [Cu(H2O)(py)2] as connecting nodes to two ends of monodentate carboxylate of L is prepared and characterised. © 2011 Elsevier B.V. All rights reserved.
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