Hydrothermal Synthesis and Crystal Structure of a Mn(II) Coordination Polymer Assembled by 5-Nitroisophthalic Acid and 1,10-Phenanthroline

A new metal-organic coordination polymer [Mn(NIPH)(phen)2]·4H2O(1,H2NIPH=5-nitroisophthalic acid,phen=1,10-phenanthroline)has been hydrothermally synthesized and structurally characterized by elemental analyses,TG,IR spectroscopy and single-crystal X-ray diffraction.The complex crystallizes in monoclinic,space group P21/n with a=1.082 2(2)nm,b=2.288 3(5)nm,c=1.289 6(3)nm,β=105.11(3)°,V=3.083 2(11)nm3,C32H27MnN5O10,Mr=696.53,Dc=1.501 g·cm-3,μ(Mo Kα)=0.497 mm-1,F(000)=1 436,Z=4,the final R=0.059 2 and wR=0.134 5 for 4 079 observed reflections(I2σ(I)).In the crystal structure,the manganese atom is six-coordinated with two carboxylate oxygen atoms from two different NIPH ligands and four nitrogen atoms from two phen ligands,showing a distorted octahedral geometry.Furthermore,it exhibits a 3D supramolecular network through hydrogen bonding and π-π stacking interactions.CCDC:818823.