Synthesis and characterization of Manganese(II), Cobalt(II) and Copper(II) coordination polymers with a flexible zwitterionic based ligand. (1st November 2021)

• Record Type: Journal Article
• Authors: Çiftçi, Esengül; Arıcı, Mürsel; Wriedt, Mario; Yeşilel, Okan Zafer
• Is Part Of: Polyhedron. Volume 208(2021)
• Publication Date: 2021-11-01
• Subjects: Coordination polymers -- 1, 1′-(1, 1′-biphenyl-4, 4′-diylbis(methylene))bis(3-carboxypyridin-1-ium) bromide complexes -- 1D/2D complexes; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2021.115419
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Abstract: Four new coordination polymers, formulated as {[MnCl(µ-bipna)](NO3 )⋅2H2 O}n (1 ), {[CoCl2 (µ-bipna)]⋅2H2 O}n (2 ), {[CuCl(µ4 -bipna)]BF4 ⋅2H2 O}n (3 ) and {[CuCl(µ4 -bipna)]ClO4 ⋅2H2 O}n (4 ) where H2 bipnaBr2 = 1, 1′-(1, 1′-biphenyl-4, 4′-diylbis(methylene))bis(3-carboxypyridin-1-ium) bromide, were synthesized under solvothermal conditions. Their structures have been characterized by single crystal and powder X-ray diffraction analyses, infrared spectra (IR) and elemental analyses. Complexes 1, 3 and 4 are isostructural and display 3-fold interpenetrated 2D → 2D structures with sql topology and the point symbol 4 4 .6 2 . Complex 2 exhibits a 1D coordination polymer structure, which becomes a stacked 3D supramolecular structure by hydrogen bonding and π⋅⋅⋅π interactions. The structural diversity of the compounds could be due to the conformation of the flexible zwitterionic ligands. In 2, the bipna ligand displays a cis -conformation, while in the other compounds the ligand shows a trans -conformation. The thermal and optical properties of the compounds were investigated.