Andruh Marius

Buta Ildikó

Costisor Otilia

Hey-Hawkins Evamarie

Lönnecke Peter

English

University of Szeged

26th International Symposium on Analytical and Environmental Problems 17  STRUCTURAL AND MAGNETIC PROPERTIES OF THREE 1D COPPER(II) COORDINATION POLYMERS  Ildiko Buta1*, Peter Lönnecke2, Evamarie Hey-Hawkins2, Marius Andruh3, Otilia Costisor1  1Romanian Academy ‘‘Coriolan Dragulescu” Institute of Chemistry, 24 Mihai Viteazu Bvd., 300223-Timisoara, Romania 2Leipzig University, Faculty of Chemistry and Mineralogy, Institute of Inorganic Chemistry, Johannisallee 29, 04103 Leipzig, Germany 3University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, 23 Dumbrava Rosie Str, 020464-Bucharest, Romania e-mail: ildiko_buta@acad-icht.tm.edu.ro  Abstract The design of coordination polymers is controlled by the nature of the ligands and metal ions involved [1]. The electronic structure, size and stereochemical preference of the metal ion, along with the number and the relative position of the coordinating groups of the ligand, determine the dimensionality and topology of the resulting compounds [2]. Here, we report three coordination polymers, 1∞[Cu3L2(NO3)]NO3·2MeOH·2H2O (1), 1∞[Cu3L2(N3)]CH3COO (2) and 1∞[Cu3L2(H2O)](ClO4)2 (3), based on the Schiff base H2L (H2L = N,N’-bis[(2-hydroxybenzilideneamino)propyl]piperazine). X-ray single-crystal analysis shows that compounds 1 and 2 are isostructural and crystallize in orthorombic system, space group, P212121, while complex 3 crystallizes in a monoclinic system, space group P21/c. Compounds 1-3 consist of trinuclear complex entities, [Cu3L2]2+, connected via different bridges, nitrato (1), azido (2) and phenoxido (3), depending on the nature of the counterion. The cryomagnetic measurements showed weak ferro- (1) and antiferromagnetic (2 and 3) interactions between the copper(II) ions (Figure 1).   Figure 1. MT vs T curves for compounds 1-3  Acknowledgements We thank the Romanian Academy, Institute of Chemistry “Coriolan Dragulescu” (Project 4.1.3) for financial support.   References [1] F.A.A. Paz, J. Klinowski, S.M.F. Vilela, J.P.C. Tomé, J.A.S. Cavaleiro, J. Rocha, Chem. Soc. Rev. 41 (2012) 1088. [2] W.L. Leong, J.J. Vittal, Chem. Rev. 111 (2011) 688.   

Structural and magnetic properties of three 1D copper(II) coordination polymers

http://acta.bibl.u-szeged.hu/73938/1/proceedings_of_isaep_2020_017.pdf

Structural and magnetic properties of three 1D copper(II) coordination polymers

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