Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (21): 1974-1978. Previous Articles     Next Articles

Original Articles



  1. (陕西师范大学化学与材料科学学院 西安 710062)
  • 收稿日期:2004-12-16 修回日期:2005-07-18 出版日期:2005-11-14 发布日期:2010-12-10
  • 通讯作者: 胡满成

Preparation, Crystal Structure and Thermodynamic Properties of Cs(ATZ)

GENG Chun-Yu, HU Man-Cheng*, LI Shu-Ni, ZHAI Quan-Guo, JIANG Yu-Cheng, LIU Zhi-Hong   

  1. (School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062)
  • Received:2004-12-16 Revised:2005-07-18 Online:2005-11-14 Published:2010-12-10
  • Contact: HU Man-Cheng

Complex Cs(ATZ) was prepared by mixing aqueous solution of CsOH and 5-aminotetrazole (ATZ). The crystal structure of Cs(ATZ) was determined by X-ray diffraction analysis. The crystal is orthorhombic with space group Pnma and unit-cell parameters of a=0.8114(4) nm, b=0.6907(4) nm, c=0.9122(5) nm, V=0.5113(5) nm3, Dc=2.819 g/cm3, Z=4, F(000)=392, μ=7.112 mm-1, R=0.0485. Cs is 9-coordinated with N atoms. 3-D framework structure was formed by hydrogen bonds, bridging between metal cations with N atoms and intermolecular forces. Cs(ATZ) was also characterized by IR and Raman spectroscopy. From measurements of the reaction enthalpy and solution enthalpy of ATZ and Cs(ATZ) in CsOH aqueous solution, the standard enthalpy of formation of the complex was calculated as (-430.56±0.43) kJ•mol-1.

Key words: ATZ, Cs(ATZ), crystal structure, preparation, standard enthalpy of formation