Structural characterization of a copper(II) complex containing oxidative cyclization of N-2-(4-picolyl)-N′-(4-methoxyphenyl)thiourea, new ligands of 4-picolylthiourea derivatives and the precursor molecular structure of oxidative cyclization of N-(2-pyridyl)-N′-(4-methoxyphenyl)thiourea
作者:Azadeh Tadjarodi、Forough Adhami、Younes Hanifehpour、Maryam Yazdi、Zohreh Moghaddamfard、Guido Kickelbick
DOI:10.1016/j.poly.2007.06.014
日期:2007.9
Three new compounds of aryl thiourea derivatives, namely N-2-(4-picolyl)-N′-(4-methoxyphenyl)thiourea (L1), N-2-(6-picolyl)-N′-(4-methoxyphenyl)thiourea (L2) and N-2-(4-picolyl)-N′-(4-nitrophenyl)thiourea (L3), and the new copper(II) complex [Cu(4PicTz4OMePh)(OAC)(EtOH)] (C1), as a result of oxidative cyclization of the ligand (L1), were synthesized. In addition, pure precursor (P1), as the product
摘要三种新的芳基硫脲衍生物化合物,即N-2-(4-吡啶甲基)-N'-(4-甲氧基苯基)硫脲(L1),N-2-(6-吡啶甲基)-N'-(4-甲氧基苯基) )硫脲(L2)和N-2-(4-吡啶甲基)-N'-(4-硝基苯基)硫脲(L3),以及新的铜(II)配合物[Cu(4PicTz4OMePh)(OAC)(EtOH)](作为配体(L1)的氧化环化的结果,合成了C1)。另外,分离并表征了作为N-(2-吡啶基)-N'-(4-甲氧基苯基)硫脲(L4)的氧化环化产物的纯前体(P1)。通过1 H和13 C NMR以及单晶X射线分析对配体(L1)和(L2)进行表征。1H NMR光谱显示N'H-官能团和吡啶氮原子之间的氢键相互作用强,硫酮硫与NH氢之间的分子间氢键作用弱。配合物(C1)的结构研究表明,铜离子与方形金字塔形环境五配位。配体(L1)的氧化环化导致络合物(C1)中的阴离子二齿配体。配体(L1)和前体(P1)均结晶为中心对称二聚体。