Synthesis,Crystal Structure,Thermal Decomposition and Sensitivity Properties of [Zn(AZT)4(H2O)2](PA)2·4H2O and [Zn(AZT)2(H2O)4](HTNR)2·4H2O

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2008,（11）
• 页码范围: 2021-2028
• 页数: 8页
• 语种: 英文

摘要

Two new coordination compounds [Zn(AZT)4(H2O)2](PA)2·4H2O and [Zn(AZT)2(H2O)4](HTNR)2·4H2O have been prepared by using AZT(3-azido-1,2,4-triazole)as ligands,PA-(picrate)or HTNR-(anion formed by the deprotonation of one of the two hydroxyl-groups of 2,4,6-trinitroresorcinol)as outer anions.The X-ray crystallographic data show that the central zinc(Ⅱ)ion is coordinated by four N atoms of four AZT molecules and two O atoms of two H2O molecules in [Zn(AZT)4(H2O)2](PA)2·4H2O.In [Zn(AZT)2(H2O)4](HTNR)2·4H2O,six coordination-atoms come from two N atoms of two AZT molecules and four O atoms of four H2O molecules.The coordina-tion sites of AZT ligands in both compounds are always 4-N atoms of the triazole rings.H2O molecules play vital roles in the formation of hydrogen bonds,which contribute to the construction of the crystal structures of both compounds.The offset face-to-face π-π stacking interactions existing in the crystal of [Zn(AZT)4(H2O)2](PA)2·4H2O also contribute to the formation and stability of its crystal structure.TG-DTG and DSC analysis results show that the thermal decomposition processes of [Zn(AZT)2(H2O)4](HTNR)2·4H2O are milder than those of [Zn-(AZT)4(H2O)2](PA)2·4H2O due to the more coordination H2O molecules and less AZT ligands in the molecular unit of the former compound.Sensitivity tests reveal that [Zn(AZT)4(H2O)2](PA)2·4H2O has sensitive nature towards heat,whereas [Zn(AZT)2(H2O)4](HTNR)2·4H2O is insensitive;both compounds are insensitive to friction and im-pact.