Tuning the topology from (۴,۴)-connected to (۶,۳)-connected net in Cd (II)coordination polymers: synthesis, crystal structure and Hirshfeld surfaceanalysis

Coordination polymers (CPs) defined as coordination compounds with extended bonding inone, two, or three dimensions have become one of the main objects of study in crystal engeeneringdue to their potential applications in sensing [۱], catalyst [۲], gas storage and separation [۳], drugdelivery [۴], and so on. The preparation of CPs in which the network topology is controlled byreaction condition is an important step in the design of new functional materials. In this regard, wereport the synthesis of two CPs, namely [Cd(L)(NO۳)۲(H۲O)]n (۱) and {[Cd(L)۱.۵(NO۳)۲](MeCN)}n(۲), by the self-assembly process using cadmium (II) ion as metal nodes and pyridine containingligand as linker in MeCN and EtOH/MeCN, respectievly. These compounds were structurallycharacterized by single-crystal X-ray diffraction analysis and further characterized by powder Xraydiffraction (PXRD). As depicted in Fig. ۱, topology of compound ۱ can be considered as (۴,۴)-connected net, while the topology of compound ۲ is (۶,۳)-connected network. Hirshfeld surfaceanalysis of the structures ۱ and ۲ have been performed and find the percent of participation ofintermolecular interactions in the crystal packing of compounds.

کلیدواژه ها:

coordination polymer ، cadmium ، topology ، solvent effect