Abstract
Four new coordination polymers of mixed ligands have been synthesized under solvothermal conditions and fully characterized viz. [(Zn(cyclam)(H2BPTC)]n1, [Ni2(cyclam)2(BPTC)]n2, [Ni(cyclam)(H2TPTC)]n3 and [(Zn(cyclam))1.5(TPTC)0.5(H2TPTC)0.5]n·(H2O) 4 (biphenyl-3,3′,5,5′-tetracarboxylic acid (H4BPTC), [1,1′,4′,1″]terphenyl-3,3″,5,5″-tetracarboxylic acid (H4TPTC) and cyclam= 1,4,8,11-tetraazacyclotetradecane). The products were structurally characterized by FT-IR spectroscopy and single-crystal X-ray diffraction (SCXRD), and the homogeneity of the bulk samples was confirmed by powder XRD (PXRD). All samples showed high thermal stability reaching 400 °C. SCXRD reveals that 1 and 3 are build from one-dimensional (1D) chains, where the metal ions are coordinated to symmetrical carboxylate groups of bidentate H2BPTC2- and H2TPTC2− anions respectively, and the remaining free -COOH groups link adjacent chains by hydrogen bonds to form layered structures. Whereas structures of 2 and 4 display a 2D grid entirely made by coordination of ligands with metal ions. In the structures, hydrogen bonds also greatly participate to consolidate the 2D frameworks. 3D Hirshfeld surface analysis associated with 2D fingerprint plots were used to examine the contributions of the different intermolecular contacts for all compounds.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
