Preparation, Structure, and Thermal Decomposition of Cu(II) 3,5-Dichlorobenzoate Trihydrate

Abstract

The title compound was studied. Its solubility in water at 293 K was determined (4 Á 10 À4 mol Á dm À3 ). The IR spectrum of the prepared complex was recorded, and its thermal decomposition in air was investigated. The trihydrated complex starts to lose its crystallization water at 343 K; it then decomposes either to CuO (5 K min heating rate) or to gaseous products (10 K min heating rate). [Cu(C 7 H 3 Cl 2 O 2 ) 2 Á (H 2 O) 3 ] crystallizes in the monoclinic system (space group P2 1 n (No. 14)); cell parameters: a 16.854(3) A Ê , b 8.330(2) A Ê , c 13.655(3) A Ê , 104.20(3) , V 1858(5) A Ê 3 , Z 4, D C 1.778 g/cm 3 , D m 1.78 g/cm 3 .

Structures of copper(II) 2-chlorobenzoate monohydrate and copper(II) 3,5-dichlorobenzoate trihydrate

“…2 and selected bond distances and angles are listed in Table 2. The compound 2 crystallizes in the monoclinic system with space group P2 1 /c and its structure at 295 K has already been reported (Wołodkiewicz et al, 1998). This report describes re-determination at 150 K complex from crystal prepared by a different method (see experimental section) as reported previously (Wołodkiewicz et al, 1998).…”

“…The compound 2 crystallizes in the monoclinic system with space group P2 1 /c and its structure at 295 K has already been reported (Wołodkiewicz et al, 1998). This report describes re-determination at 150 K complex from crystal prepared by a different method (see experimental section) as reported previously (Wołodkiewicz et al, 1998). The independent part of structure of 2 consists of [Cu(3, 91.93 (7) O13-Cu1-O3W 83.08(7) O12-Cu1-O2W 90.22 (7) O12-Cu1-O3W 95.27(7) O13-Cu1-O1W 89.27 (7) O2W-Cu1-O3W 89.90(7) O12-Cu1-O1W…”

“…3) and c g ···c g distance (Janiak, 2000) is 3.61 Å. Both studied complexes have been prepared similar method, but this method is different that published methods of synthesis of complex 1 (Kawata et al, Wołodkiewicz et al, 1998). The structures of both complexes have been determinated at room temperature, but hydrogen atoms have not been calculated in corrected positions, but Low-temperature re-determination at 150 K allows determinate more better results and the hydrogen atoms are calculated in correct positions.…”

“…Novelty in present paper is description of hydrogen bond networks and π-π stacking interactions in crystal structures of both complexes. The studies of hydrogen bonds and intermolecular interaction have been absent in original room temperature crystal structures (Kawata et al, 1992;Wołodkiewicz et al, 1998).…”

“…The aim of this paper is to report an X-ray structures of the dinuclear complex . These complexes were previously prepared and published (Kawata et al, 1992;Wołodkiewicz et al, 1998). Object of our study is mention to conditions of preparation of reported complexes and re-determined of obtained complexes at 150 K because published results don't contain hydrogen bond networks and π-π stacking interactions in crystal structures of both complexes.…”