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Preparation, Crystal Structure, and Thermal Decomposition of the Intriguing Five‐coordinated Compound [Cu(IMI) 4 Cl]Cl (IMI = Imidazole)
Author(s) -
Wu BiDong,
Zhou ZunNing,
Bi YanGang,
Yang Li,
Zhang JianGuo,
Zhang TongLai
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200520
Subject(s) - monoclinic crystal system , enthalpy , crystallography , thermal decomposition , imidazole , crystal structure , chemistry , differential scanning calorimetry , activation energy , thermogravimetric analysis , thermal analysis , single crystal , stereochemistry , thermal , thermodynamics , organic chemistry , physics
The intriguing multi‐ligand compound [Cu(IMI) 4 Cl]Cl ( 1 ) with the ligand imidazole (IMI) was synthesized and characterized by elemental analysis and FT‐IR spectroscopy. The crystal structure was determined by X‐ray single crystal diffraction and the crystallographic data showed that the compound belongs to the monoclinic P 2 1 / n space group [ α = 8.847(2) Å, b = 13.210(3) Å, c = 13.870(3) Å, and β = 90.164(3)°]. Furthermore, the Cu II ion is five‐coordinated by four nitrogen atoms from four imidazole ligands and a chlorine atom. The thermal decomposition mechanism was determined based on differential scanning calorimetry (DSC) and thermogravimetric (TG‐DTG) analysis. The non‐isothermal kinetics parameters were calculated by the Kissinger's method and Ozawa's method, respectively. The energy of combustion, enthalpy of formation, critical temperature of thermal explosion, entropy of activation (Δ S ≠ ), enthalpy of activation (Δ H ≠ ), and free energy of activation (Δ G ≠ ) were measured and calculated.