An unusual interweaving in a 3-fold interpenetrated pillared-layer Zn(II) coordination polymer with a long spacer ligand

Abstract

This communication describes a unique interweaving of a pyridyl-based long linear spacer ligand, 1,4-bis[2-(4-pyridyl)ethenyl]benzene (bpeb), in the triply interpenetrated pillar-layer porous coordination polymer [Zn 2(ndc) 2(bpeb)]•DMF•3H 2O(where ndc = 2,6-naphthalenedicarboxylate) containing a paddle-wheel secondary building unit (SBU) with α-Po topology. When the dicarboxylate is changed diethylpyrocarbonate (DEPC) fromndc to biphenyl-4,4′-dicarboxylate (bpdc), the reaction furnished a completely different 3-fold interpenetrating three-dimensional coordination polymer [Zn 3(bpdc) 3(bpeb)] •0.5DMSO•1.5H 2O having a uninodal eight connected network structure with hexagonal bipyramidal SBUs. © 2012 American Chemical Society.