Abstract
Two novel mixed ligand complexes with general formula [M2(4,4′-bpy)1.5(CBr2HCOO)6(H2O)2]n (where 4,4′-bpy = 4,4′-bipyridine) were synthesized. Thermal analysis was used to describe a solid intermediate and final products of thermolysis. A coupled TG-MS system was used to monitor principal volatile fragments evolved during pyrolysis. Crystal structures of the complexes were determined. Cationic dinuclear M2 (M(III) = La, Sm) coordination cores were obtained. Both crystal structures are isostructural. Single crystal X-ray diffraction analysis revealed that investigated structures of 1D coordination polymers assembled in ladder-like systems. The central atom replacement resulted in unit cell identity parameter П = 0.0091. Additionally, the isostructurality of the reported La(III) and Sm(III) complexes was revealed using Hirshfeld Surface analysis supported by Enrichment Ratio calculations.
Highlights
Coordination polymers are compounds that comprise an interesting and promising field of chemistry
We present synthesis, thermal properties, and crystal structures of two 4,40 -bipyridine coordination
Solid intermediate and final products of decompositions of polymers were determined on the basis of the mass losses and volatile products of thermolysis
Summary
Coordination polymers are compounds that comprise an interesting and promising field of chemistry. One of the reasons is their valuable and oftentimes unusual properties These compounds find applications in many different areas of everyday life, industry, and science. Some coordination polymers can be used to remove harmful substances [17,18,19,20] or to capture and entrap other molecules [21,22]. It is one of the promising ideas of dealing with the increasing levels of carbon dioxide in the air [23] and can be applied in modern medicine, e.g., cancer therapy [24]. Both metal-organic structures and typical Werner complexes can form polymeric chains
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