Design and construction of two rare aqua bridged copper (II) coordination polymers through mixed ligand strategy: Synthesis, characterization and single crystal X-ray structure determination of [Cu(2-iodobenzoate)(2)(beta/gamma-Picoline)(2)(mu-H2O)](n)

摘要

Reaction of hydrated copper (II) 2-iodobenzoate with 13/y-picoline in methanol:water mixture (4:1, v/v) yielded two rare aqua bridged zig-zag polymers [Cu(2-iodobenzoate)2(J3-picoline)2(11-H20)111; I and [Cu(2-iodobenzoate)2(y-picoline)2(p.-H20)1,1; 2. The newly synthesized complexes have been characterized by elemental analysis, FT-IR spectroscopy, UV-Vis spectroscopy and single crystal X-ray structure determination. Complex 1 crystallized in monoclinic crystal system with C2/c space group, and complex 2 crystallized in triclinic crystal system with PT space group. X-ray structure determination revealed the presence of 1-dimensional chains of constituent molecules running along a-axis in both complexes. Water molecules act as bridges between constituent molecules and hence play a crucial role in 1-dimensional chain propagation in zig-zag manner. Empty channels have been observed between the zig-zag chains of complexes. Non-covalent interactions interactions such as 0-H. " -0,.0 and C-H. it have been observed, which play a decisive role in the stabilization of crystal lattices in both complexes 1 and 2. C 2014 Elsevier B.V. All rights reserved.