Crystal structure and EPR studies of doped Cu2+ ion in [Zn(sac)2(en)2] single crystal

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Abstract

The tran-bis(ethylenediamine)bis(saccharinato)Zinc(II), [Zn(sac)2(en)2] (ZSED), (en: ethylenediamine and sac: saccharinate) complex has been synthesized and its crystal structure has been determined by X-ray diffraction analysis. The compound crystallizes in space group P21/c. The Zn(II) ion is hexa-coordinated by four nitrogens of two bidentate en ligands composing the basal plane and two nitrogen atoms from the monodentate two sac ligands (N-bonded) occuping the axial sites, adopting an elongated octahedral sphere. Both en and sac ligands occupy the trans positions of the coordination octahedron. The Zn(II) ion in title compound sits on a inversion centre and is octahedrally coordinated two bidentate en (ethylenediamine) and two sac (saccharinate) (N-bonded) ligands. The magnetic environments of Cu2+ doped [Zn(sac)2(en)2] complex have been identified by electron paramagnetic resonance (EPR) technique. Cu2+ doped ZSED single crystals have been studied at room temperature in three mutually perpendicular planes. The calculated results of the Cu2+ doped ZSED indicate that Cu2+ ion contains two magnetically inequivalent Cu2+ sites in distinct orientations occupying substitutional positions in the host lattice and show very high angular dependence. © 2009 Elsevier B.V. All rights reserved.

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Karabulut, B., Uçar, I., Köksal, F., & Yerli, Y. (2010). Crystal structure and EPR studies of doped Cu2+ ion in [Zn(sac)2(en)2] single crystal. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 75(4), 1195–1199. https://doi.org/10.1016/j.saa.2009.10.038

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