Crystal Engineering of Schiff Base Zn(II) and Cd(II) Homo- and Zn(II)M(II) (M = Mn or Cd) Heterometallic Coordination Polymers and Their Ability to Accommodate Solvent Guest Molecules
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DANILESCU, Olga, BOUROSH, Pavlina, PETUHOV, Oleg, KULIKOVA, Olga, BULHAK, Ion, CHUMAKOV, Yurii, CROITOR, Lilia. Crystal Engineering of Schiff Base Zn(II) and Cd(II) Homo- and Zn(II)M(II) (M = Mn or Cd) Heterometallic Coordination Polymers and Their Ability to Accommodate Solvent Guest Molecules. In: Molecules (Basel, Switzerland), 2021, vol. 26, p. 0. ISSN -. DOI: https://doi.org/10.3390/molecules26082317
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Molecules (Basel, Switzerland)
Volumul 26 / 2021 / ISSN - /ISSNe 1420-3049

Crystal Engineering of Schiff Base Zn(II) and Cd(II) Homo- and Zn(II)M(II) (M = Mn or Cd) Heterometallic Coordination Polymers and Their Ability to Accommodate Solvent Guest Molecules
DOI:https://doi.org/10.3390/molecules26082317

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Danilescu Olga1, Bourosh Pavlina12, Petuhov Oleg13, Kulikova Olga2, Bulhak Ion1, Chumakov Yurii2, Croitor Lilia2
 
1 Institute of Chemistry,
2 Institute of Applied Physics,
3 Institutul de Geologie şi Seismologie
 
 
Disponibil în IBN: 17 mai 2021
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Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (H2L) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL]n (1), {[CdL]∙0.5dmf∙H2O}n (2) and {[ZnL]∙0.5dmf∙1.5H2O}n (3), as well as two heterometallic {[Zn0.75Cd1.25L2]∙dmf∙0.5H2O}n (4) and {[MnZnL2]∙dmf∙3H2O}n coordination polymers. Compound 1 represents a 1D chain, whereas 2-5 are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption-desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.
Cuvinte-cheie
adsorption–desorption property, Cd(II), Coordination polymer, crystal structure, degassing, photoluminescence, Schiff base, Zn(II)

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