Design, Synthesis and Characterization of Coordination Polymer from [Cu(DMF)4(SCN)2] as a Precursor

Abstract

AbstractThis paper is focused on investigation of coordination polymers constructed by Cu(II) and rigid pyridyl ligands, such as 4,4′‐bipyridyl‐1,2,4‐triazole (Hpytz) and 1,10‐phenanthroline (phen) from a mononuclear precursor [Cu(DMF)4(NCS)2] (1). As expected, the complex was self‐assembled with phen to form a 1D double‐stranded chain of [Cu(phen)(µ‐SCN)2]∞ (2), with Hpytz to form 1D zigzag chain of [Cu2(µ‐Hpytz)2(NCS)2(DMF)2(µ‐SCN)2]∞ (3) in which thiocyanate anion linked the Cu‐µ‐Hpytz‐Cu chain into an infinite 2D network via weak Cu···S interaction. To treat 3 with the bridged anion dca, a novel 3D framework [Cu(µ‐Hpytz)(µ‐dca)(µ‐SCN)] ∞ (4) was obtained in which Cu‐µ‐Hpytz‐Cu chain is preserved and both thiocyanate anion and dicyanamide (dca) act as bridging ligands. In addition, complex 3 was applied as a metal catalyst in polymerization of MMA in aqueous solution at room temperature.