Synthesis and Magnetic Properties of Dual-Ligand Divalent Copper Coordination Polymers with Rhomboid Layer, Archimedean Grid, and Self-Penetrated Network Topologies

Abstract

Four divalent copper coordination polymers containing both 1,2-phenylenediacetate (1,2-phda) and dipyridyl-type coligands have been prepared and structurally characterized by single-crystal X-ray diffraction. {[Cu(1,2-phda)(dpa)]·H2O}n (1, dpa = 4,4′-dipyridylamine) possesses a simple (4,4) rhomboid polymeric grid structure but can be considered a (4,6)-connected binodal supramolecular lattice with (4462)(446108) fsc topology. Use of a longer dipyridyl ligand afforded [Cu2(1,2-phda)2(dpp)]n (2, dpp = 1,3-di(4-pyridyl)propane), which manifests a rare self-penetrated rob lattice (48668 topology) built from the linkage of copper dicarboxylate layers through crossed dpp tethers. [Cu(1,2-phda)(H2O)(4-bpmp)0.5]n (3, 4-bpmp = bis(4-pyridylmethyl)piperazine) forms a 5-connected Archimedean cem layer with 334453 topology. The topology of 3 can be alternately described as a 3,4-connected binodal layer with a V2O5-type network. Incorporation of nitrate counterions led to formation of {[Cu(1,2-phda)(H2O)(H4-bpmp)] (N...