Charge-Assisted Complexation of Anions of Different Dimensionality by Benzimidazole-Based Receptors Bearing -OH Functionality
作者:Abhijit Gogoi、Gopal Das
DOI:10.1021/cg300496t
日期:2012.8.1
where the shape of the counteranion drives the solid structure from a one-dimensional polymeric chain to a three-dimensional structure. Structural analyses show that the anion binding in all eight complexes is attributable entirely to NH+···anion, NH···anion, OH···anion, and multiple CH···anion hydrogen bonding interactions. In the solid structure the planar nitrate anion forms a cyclic structure with receptor
具有-OH官能度的两个基于苯并咪唑的受体(L 1和L 2)与不同的有机酸和无机酸形成结晶盐。[L 1 H + ] [Cl – ](1),[L 1 H + ] [NO 3 – ](2),[L 1 H + ] [OAc – ](3),[L 1 H + ] [ DNB – ]·DMF(4),[L 1 H + ] [H 2 PO 4 – ](5),[L 2 H + ] [OAc – ]·AcOH(6),[L 2 H + ] [DNB – ](7)和[L 2 H + ] [HSO 4 – ]·H 2 O(8),其中抗衡阴离子的形状将固体结构从一维聚合物链驱动为三维结构。结构分析表明,所有八个配合物中的阴离子结合完全归因于NH + ···阴离子,NH ···阴离子,OH ···阴离子和多个CH ···阴离子氢键相互作用。在固体结构中,平面硝酸根阴离子与受体L 1形成环状结构,而具有相同受体的乙酸根阴离