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Syntheses, Characterization, and X-ray Crystal Structure of Heteronuclear Zn/Na Assembled with Salen-type Schiff Base
Science Journal of Chemistry
Volume 8, Issue 5, October 2020, Pages: 113-118
Received: Sep. 9, 2020; Accepted: Sep. 23, 2020; Published: Sep. 29, 2020
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Pokpa Haba, Department of Chemistry, University Cheikh Anta Diop, Dakar, Senegal
Mouhamadou Moustapha Sow, Department of Chemistry, University Alioune Diop, Bambey, Senegal
Mamour Sarr, Department of Chemistry, University Cheikh Anta Diop, Dakar, Senegal
Ibrahima Elhadji Thiam, Department of Chemistry, University Cheikh Anta Diop, Dakar, Senegal
Mahy Diaw, Department of Chemistry, University Alioune Diop, Bambey, Senegal
Pascal Retailleau, Natural Substances Laboratory, University Paris-Sud, Gif-sur-Yvette, France
Mohamed Lamine Gaye, Department of Chemistry, University Cheikh Anta Diop, Dakar, Senegal
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Herein we reported the crystal structure of a dinuclear complex [{ZnIINaI (L)(EtOH)(NO3)]}] (2) obtained by reaction with the metalloligand [Zn(L)].(H2O) (1) and sodium nitrate. The metalloligand (1) and the dinuclear (2) complexes are characterized by IR and physical measurement. Spectroscopic evidence indicated that the Schiff base H2L behave an N2O2O’ 2 coordination tetradentate ligand. Suitable crystals of the compound 2 were grown by slow evaporation of ethanol solution for two weeks. The structure of 2 was elucidated by X-ray diffraction analysis. The compound crystallizes in the monoclinic crystal system with a space group of P21/c. The asymmetric unit of the compound contains one dideprotonated ligand molecule, on tetracoordinated zinc (II) ion, one heptacoordinated sodium(I) ion, one bidentate nitrate group and one coordinated ethanol molecule resulting in a structure formulated as [Zn(µ-L)Na(NO3)(EtOH)]. In the structure the ZnII ion is tetracoordinated and the environment around the zinc (II) is best described as a planar square geometry. The NaI ion is seven-coordinated in a severely distorted bipyramid pentagon environment. The interplanar angles between the two phenyl rings with a methoxy substituent is 4.208 (4)°, while the dihedral angle values of these groups with the phenyl carrying amino groups are respectively 7.499 (5)° and 11.594 (5)°. The Zn–Na distance is 3.4244 (9) Å. In the crystal structure numerous intramolecular and intermolecular hydrogen bonds link the molecules in a three-dimensional network.
Zinc, Metalloligand, o-vanillin, 1, 2-diaminobenzene
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Pokpa Haba, Mouhamadou Moustapha Sow, Mamour Sarr, Ibrahima Elhadji Thiam, Mahy Diaw, Pascal Retailleau, Mohamed Lamine Gaye, Syntheses, Characterization, and X-ray Crystal Structure of Heteronuclear Zn/Na Assembled with Salen-type Schiff Base, Science Journal of Chemistry. Vol. 8, No. 5, 2020, pp. 113-118. doi: 10.11648/j.sjc.20200805.13
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