TWO NEW SELF-ASSEMBLED CADMIUM(II) METAL-ORGANIC FRAMEWORKS CONSTRUCTED OF A FLEXIBLE TRIPODAL LIGAND: SYNTHESIS, STRUCTURE, AND THERMAL STABILITY

Two novel complexes, namely [Cd(L)(NO 3 ) 2 ] n ( 1 ) and {[Cd(L)(NO 3 ) 2 ](CH 3 CH 2 OH)} n ( 2 ) (L = 1,3,5-tris[1-(4-oxidroxypyridinium-methylene)]benzene) are synthesized solvothermally in different solvents. Single crystal and powder X-ray diffraction, infrared spectroscopy, thermogravimetry,...

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Bibliographic Details
Published in:Journal of structural chemistry 2021-11, Vol.62 (11), p.1703-1714
Main Authors: Yang, Q. -L., Zhang, X. -Y., Xiong, D. -Q., Zhu, Y. -Y., Yun, M., Jia, M. -M., Fu, P. -K., Liu, J. -C., Dong, X. -Y.
Format: Article
Language:English
Subjects:
Atomic
Atomic/Molecular Structure and Spectra
Benzene
Bonding strength
Chemistry
Chemistry and Materials Science
Ethanol
Hydrogen bonding
Infrared analysis
Inorganic Chemistry
Ligands
Metal-organic frameworks
Molecular
Optical and Plasma Physics
Physical Chemistry
Self-assembly
Single crystals
Solid State Physics
Stability analysis
Structural stability
Thermal stability
Thermogravimetry
Topology
Two dimensional analysis
X ray powder diffraction
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Summary:Two novel complexes, namely [Cd(L)(NO 3 ) 2 ] n ( 1 ) and {[Cd(L)(NO 3 ) 2 ](CH 3 CH 2 OH)} n ( 2 ) (L = 1,3,5-tris[1-(4-oxidroxypyridinium-methylene)]benzene) are synthesized solvothermally in different solvents. Single crystal and powder X-ray diffraction, infrared spectroscopy, thermogravimetry, 2D fingerprint plots, and Hirshfeld surface analyses are carried out for these complexes and their topology and thermal stability are also analyzed. Two complexes exhibit the same 2D interpenetrating structure formed by the ligand coordinated with Cd(II) ions. Due to the presence of ethanol molecules in complex 2 , part of π⋯π stacking in complex 1 is blocked, resulting in new C–H⋯π and hydrogen bonding. This change makes the weak force stronger and forms a more stable framework. The result is that the thermal stability of 2 is higher than that of 1 .
ISSN:0022-4766
1573-8779
DOI:10.1134/S0022476621110068