Abstract
In this work, we have utilized the second-sphere coordination approach toward the construction of supramolecular inclusion solids Cl · 2H2O ⊂ [H2L1]0.5 · [CuCl4]0.5 (Crystal 1) and Cl ⊂ [H2L1] · [TeCl6]0.5 (Crystal 2). The chloride anions can be encapsulated inside the host assemblies formed by the diamine molecule (4,6-dimethyl-1,3-phenylene)bis(N,N-dibenzylmethane) (L1) and the metal complexes ([CuCl4]2− and [TeCl6]2−) via second-sphere coordination. The complexes have been structurally characterized by X-ray crystallography, indicating that weak C–H ··· Cl hydrogen-bonding synthons play a significant role in the construction of second-sphere coordination complexes. 2-D networks are formed in both complexes by the interconnection of 1-D networks through multiple C–H ··· Cl hydrogen-bonding interactions with [CuCl4]2− and [TeCl6]2−. The guest chlorides are encapsulated inside the host cages through N–H ··· Cl hydrogen bonds.
Acknowledgments
This work was supported by the National Science Foundation of China (No. 20772054, 20903052) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.