Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (06): 1319-1324.doi: 10.3866/PKU.WHXB20110526

• THERMODYNAMICS, KINETICS, AND STRUCTURAL CHEMISTRY • Previous Articles     Next Articles

Crystal Structure and Thermochemical Properties of Bis(n-Nonylammonium) Tetrachlorozincate

LU Dong-Fei, DI You-Ying, HE Dong-Hua   

  1. College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, Shandong Province, P. R. China
  • Received:2011-01-26 Revised:2011-03-23 Published:2011-05-31
  • Contact: DI You-Ying E-mail:diyouying@126.com, diouying@lcu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20673050, 20973089).

Abstract:

We synthesized crystalline bis(n-nonylammonium) tetrachlorozincate (C9H19NH3)2ZnCl4(s) (C9Zn(s)). X-ray single crystal diffraction, chemical analysis, and elemental analysis were used to determine the crystal structure and composition of the complex. The lattice potential energy UPOT was calculated to be 952.94 kJ·mol-1 from crystallographic data. The molar enthalpies of C9Zn(s) dissolution using various molalities were measured in double-distilled water by an isoperibol solution-reaction calorimeter at 298.15 K. According to Pitzer's electrolyte solution theory the molar enthalpy of dissolution of C9Zn(s) at infinite dilution (ΔsΗm∞ )] was calculated to be 20.09 kJ·mol-1 and the sums of Pitzer's parameters (4βC9H19NH3,Cl(0)L+2βZn,Cl(0)L+θC9H19NH3,ZnL) and (2βC9H19NH3,Cl(1)L+βZn,Cl(1)L) were obtained.

Key words: Bis(n-nonylammonium) tetrachlorozincate, Lattice potential energy, Molar enthalpy of dissolution at infinite dilution, Pitzer’s parameter, Pitzer’s theory