Synthesis and Structure of [Cu（OH）2（H2O）2（4—C5H4N—COOH）2]

1 INTRODUCTION Supramolecular chemistry and crystal engineering of coordination compounds have attracted considerable interests nowadays owing to the fascinating structural diversity and potential applications as functional materials1,2]. Generally, architectures of supramolecules are formed through hydrogen bonds, ?- ?stacking interaction or other weak interactions between the molecules. Recently, many supramolecular compounds containing silver(I) and copper(II) species have been re-…

Synthesis and Structure of [Cu(OH)_2(H_2O)_2(4-C_5H_4N-COOH)_2]

The hydrothermal reaction of isonicotinic acid (4-C5H4N-COOH), Cu(ClO4)26H2O and water at 170C gave the title compound, Cu(OH)2(H2O)2(4-C5H4N- COOH)2] (1), which was analyzed by single-crystal X-ray diffraction. The complex crystallizes in triclinic space group P ?with unit cell parameters: a = 6.337(2), b = 6.894(3), c = 9.178(3)? a = 99.40(3), b = 105.26(3), g = 108.17(5), V = 354.1(2) ?, Z = 1, C12H16CuN2O8, Mr = 379.81, Dc = 1.791 Mg/m3, F(000) = 197, m(MoKa) = 1.589 mm-1. The final R and wR are 0.068 and 0.170 for 1249 observed reflections with I ≥ 2?I). The central copper ion is in a distorted octahedron geometry completed by two nitrogen atoms from carboxylic ligand, two oxygen atoms from hydroxyl groups and two oxygen atoms from coordinated water molecules. The intermolecular hydrogen bonding leads to the formation of a three-dimensional supramolecular structure.