Synthesis, Crystal Structure, Properties and Thermoanalysis of Complexes of Cu(Ⅱ) and Ni(Ⅱ) with Taurine-5-chlorosalicylaldelyde Schiff Base

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2004,（11）
• 页码范围: 1303-1307
• 页数: 5页
• 语种: 英文

摘要

The reactions of transition metal salts with taurine 5-chlorosalicylaldelyde Schiff base gave two complexes [Ni(TCSSB)(H2O)3]·H2O (1) and [Cu(TCSSB)(H2O)2]2·[Cu(TCSSB)2]·6H2O(2)(TCSSB=taurine-5-chlorosali-cylaldelyde schiff base),which were characterized by elemental analysis and X-ray diffraction analysis. The complex 1 crystallized in monoclinic system with space group P2 1/c, and a= 1.4816(2) nm, b= 1.3953(2) nm, c=0.7466(1) nm, β= 100.499(3)℃, V= 1.5176(4) nm3, Z=4, and an infinite 3-D network structure was formed by hydrogen bonds among sulfo group, crystal water and coordinated water. Complex 2 crystallized in triclinic system with space group P1, with the cell parameters: a=0.6413(2) nm, b=1.4596(3) nm, c=1.6188(4) nm, α=102.473(5)℃, β=98.979(4)℃, γ= 101.739℃, V= 1.4165(6) nm3, Z= 1. The coordination environment between Cu(1)and Cu(2) is different. Cu(1) is slightly distorted square pyramidal while Cu(2) is distorted square-plane. The complex 1 is mononuclear while the complex 2 is made up of two coordinated subunits, namely [Cu(TCSSB)2] and [Cu(TCSSB)(H2O)2]2. Besides that the TG-DTG of the complex 1 was analyzed, the thermal decomposition reaction of the complex was studied under a non-isothermal condition by TG-DTG. The TG and DTG curves indicate that the complex was decomposed in three stages:[Ni(TCSSB)(H2O)3]·H2O 60-104℃/-H2O→Ni(TCSSB)(H2O3)110-155℃/-3H2O→Ni(TCSSB)425-610℃/-TCSSB→NiO