Hydro/ Solvothermal Synthesis and Crystal Structure of New Ni(II) Coordination Polymer Containing Pamoic Acid and Ethylenediamine Mixed Ligands : {[Ni(µ-pam)(en)2]·H2O}n

The new coordination polymers arranged from flexible pamoic acid, namely {[Ni(µ-pam)(en)2]·H2O}n (1), (H2pam= pamoic acid, en= ethylenediamine), have been synthesized under hydro/ solvothermal conditions and characterized by elemental analysis, simultaneous TG, DTA techniques, IR spectroscopy, and X-ray crystallography. X-ray single crystal structure analysis of 1 shows that the Ni(II) ions are bridged by pamoic acid ligands to generate 1dimensional (1D) coordination polymer running parallel to the direction, with the Ni∙∙∙Ni separation is 14.057 Å. Adjacent 1D chains are connected by N-H···O and O-H···O hydrogen bonds to establishing 3 dimensional (3D) supramolecular network