Synthesis, Crystal Structure and Photoluminescence of a Copper(Ⅰ)-iodide Coordination Polymer Based on Polyimidazolate Ligand

摘要

cqvip:A copper(Ⅰ)-iodide coordination polymer,namely{[Cu3 I3(Tipa)2]·3(DMF)}n(1),was synthesized from tetrahedral Cu4 I4(py)4 precursor and tris(4-(~1H-imidazol-1-yl)phenyl)amine)(Tipa)ligand in N,N-dimethylformamide(DMF)and methanol,and characterized by single-crystal X-ray diffraction.Its crystal crystallizes in monoclinic system,space group P2/c with a=12.849(4),b=12.034(3),c=24.619(7)A,β=104.681(4)°,Mr=1604.52,V=3682.4(18)A^3,Z=2,Dc=1.447 g/cm^3,μ=2.163 mm^-1,S=0.975,F(000)=1580,the final R=0.0835 and wR=0.2354 for 6471 observed reflections(I>2σ(I)).In compound 1,the Cu4 I4(py)4 was in-situ changed into another neutral CuI unit.Interestingly,two CuI units and two imidazole rings of the tipa ligands form a macrocyclic loop,which are further linked by another CuI unit and the third imidazole ring of the tipa ligands to produce a 1 D loop-containing chain.Solvent molecules were filled in the pore of the loop,which prevents the interpenetration of each other.The packing of these 1 D chains generates a 1 D channel along the a-axis,which is filled by disordered DMF molecules.In addition,compound 1 exhibits high thermal stability and strong photoluminescence at room temperature.