Coordination behaviour of sulfanilamide derivatives.
作者:Ángel Garcı́a-Raso、Juan J Fiol、Santiago Rigo、Antonio López-López、Elies Molins、Enrique Espinosa、Elisa Borrás、Gloria Alzuet、Joaquı́n Borrás、Alfonso Castiñeiras
DOI:10.1016/s0277-5387(00)00355-7
日期:2000.4
the equatorial plane and two oxygen atoms of two water molecules [Zn–O(4)=2.0984(14) A] are placed in the apical positions. IR and NMR spectral studies suggest a similar behaviour of the Cd(II) and Zn(II) complexes, both in solid state and solution, and different to the corresponding Hg(II) complexes. Thus 1H and 13C NMR spectra, in DMSO-d6, of Cd(II) and Zn(II) compounds show coordination mainly through
摘要制备了Hg(II),Cd(II)和Zn(II)与磺胺二甲恶嗪,磺胺甲氧基哒嗪,磺胺嘧啶,磺胺嘧啶,磺胺嘧啶和磺胺甲恶唑的配体,并通过光谱数据对其进行了表征。1 H和13 C NMR已用于解释溶液中复合物的结构特征。[Hg(磺胺甲氧基吡啶并嗪酮)2](2a),[Cd(磺胺基嘧啶并酮)2(H2O)]·2H2O(4b)和[Zn(磺胺甲恶唑酮)2(py)2(H2O)2]的X射线晶体结构( 6d)已确定。在络合物2a中,Hg(II)离子位于一个反转中心,并通过两个去质子化的磺基甲氧基吡啶并嗪配体的两个磺酰胺氮原子[Hg–N(1)= 2.071(4)A]表现出线性配位。聚合的Cd(II)配合物(4b)表现出高度扭曲的八面体几何形状,涉及磺酰胺氮[Cd–N(1)= 2.328(6); Cd–N(1')= 2。326(6)A]和杂环N(3)/ N(2')[Cd–N(3)= 2.307(6)A;两个二齿磺胺嘧啶配体的Cd–N(2')=