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Synthesis, characterization, and crystal structure of two zinc(II) halide complexes with the symmetrical bidentate Schiff-base ligand (3,4-MeO-ba)2en

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Abstract

In this study two zinc(II) halide complexes with the Schiff-base ligand (3,4-MeO-ba)2en [N,N′-bis(3,4-dimethoxybenzylidene)ethane-1,2-diamine] have been synthesized and characterized by elemental analyses (CHN), single-crystal X-ray diffraction, Fourier-transform infrared (FT-IR), and 1H nuclear magnetic resonance (NMR) spectroscopy. The metal-to-ligand ratio was found to be 1:1 within the formula ZnX2((3,4-MeO-ba)2en) (X = Br, I). Crystal structure analysis reveals that the coordination geometry around the zinc(II) ions in the two isotypic complexes is distorted tetrahedral. The Schiff-base ligand (3,4-MeO-ba)2en acts as a chelating ligand and coordinates via two N atoms to the metal center and adopts an (E,E) conformation. The coordination spheres of the metal atoms are completed by the two halide atoms, which are also involved in weak non-classical hydrogen-bonding interactions of the type C–H···X–Zn.

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Acknowledgments

We acknowledge the Golestan University (GU) and Damghan University of Basic Science (DUBS) for partial support of this work.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran

    Aliakbar Dehno Khalaji

  2. Division of Structural Chemistry, Institute for Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-SC, 1060, Vienna, Austria

    Matthias Weil

  3. School of Chemistry, Damghan University of Basic Science, P.O. Box 36715-364, Damghan, Iran

    Gholamhossein Grivani & Samaneh Jalali Akerdi

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  1. Aliakbar Dehno Khalaji
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  2. Matthias Weil
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  3. Gholamhossein Grivani
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  4. Samaneh Jalali Akerdi
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Correspondence to Aliakbar Dehno Khalaji.

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Khalaji, A.D., Weil, M., Grivani, G. et al. Synthesis, characterization, and crystal structure of two zinc(II) halide complexes with the symmetrical bidentate Schiff-base ligand (3,4-MeO-ba)2en. Monatsh Chem 141, 539–543 (2010). https://doi.org/10.1007/s00706-010-0296-2

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  • DOI: https://doi.org/10.1007/s00706-010-0296-2

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