Abstract
A heterobimetallic 2-D coordination polymer, [Na2(Cu2I2(2pyCOO)4)(H2O)4]n (1) (2pyCOO=picolinate) was synthesized and characterized. The complex was also structurally characterized using single X-ray diffraction studies that revealed the complex 1 having a vertex symbol of 4.82 which corresponds to fes topology. Together with hydrogen bonds and interdigitating π···π interactions, these thus facilitate the formation of 3-D supramolecular network. The nitrogen gas absorption amount of 1 at 77 K shows a small volume of N2 sorption isotherm with a small Langmuir and a Brunauer-Emmett-Teller (BET) surface area indicating that the heterobimetallic 3-D supramolecular of 1 exhibits a very weak ability of adsorbing gas.
Highlights
Coordination polymers have attracted wide interest owing to their potential application in numerous areas, especially in sensors [1], magnetism [2], and gas storage [3,4]
Supramolecular hydrogen bonding interactions are frequently used in the creation of frameworks and host guest assemblies [9], examples of systems that exploit aromatics interactions are relatively limited [10]
Described as a 2-D network with the vertex symbol of 4.82 which corresponds to fes topology (Figure 1(c)) [16]
Summary
Coordination polymers have attracted wide interest owing to their potential application in numerous areas, especially in sensors [1], magnetism [2], and gas storage [3,4]. Carboxylic acid ligands are widely used in the formation of coordination polymers, owing to their tendency as bridging ligands [7]. By utilizing the coordination and hydrogen bonds as driving forces, a large number of supramolecular crystalline frameworks, including hydrogen bonding-stabilized 3-D supramolecular frameworks, have been constructed [8]. The formation and stability of these supramolecular compounds largely depend on the type of interactions, magnitude, and directions of intra/intermolecular forces during self-assembly. Single crystal X-ray analysis gives information about the interactions in packing of the molecules in the solid state, which is crucial for us to understand the formation and stability of 3-D supramolecular network. Supramolecular hydrogen bonding interactions are frequently used in the creation of frameworks and host guest assemblies [9], examples of systems that exploit aromatics interactions are relatively limited [10]
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