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Synthesis, Structural Characterization, and Biological Activities of Organically Templated Cobalt Phosphite (C4N2H14)Co(H2PO3)4·2H2O

1
Engineering Laboratory of Organometallic and Molecular Materials, Faculty of Sciences, University Sidi Mohamed Ben Abdellah, Po. Box 1796 (Atlas), 30000 Fez, Morocco
2
ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, UK
3
Laboratoire Matériaux et Environnement, Faculté des Sciences, Université Ibn Zohr, B.P. 8106, Cité Dakhla, 80000 Agadir, Maroc
4
Department of Pharmacy, Building B 2.1, Room 1.13, Saarland State University, Saarbruecken, Germany
*
Author to whom correspondence should be addressed.
Received: 17 January 2019 / Accepted: 5 March 2019 / Published: 12 March 2019
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Published: 12 March 2019
DOI: 10.3390/sci1010013.v1
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Abstract

A novel hybrid phosphite [(C4N2H14)Co(H2PO3)4·2H2O] was synthesized with 1,4- diaminobutane (dabn) as a structure-directing agent using slow evaporation method. Single crystal X-ray diffraction analysis showed that it crystallizes in the triclinic system (S.G: P-1, #2) with the following unit cell parameters (Å, °) a = 5.4814 (3), b = 7.5515 (4), c = 10.8548 (6), α = 88.001 (4), β = 88.707 (5), γ = 85.126 (5). The crystal structure was built up from corner-sharing [CoO6]-octahedrons, forming chains parallel to [001], which are interconnected by H2PO3 pseudo-pyramid units. The diprotonated 1,4-diaminobutane molecules, residing between the parallel chains, interacted with the inorganic moiety via hydrogen bonds leading thus to the formation of the 3D crystal structure. The Fourier transform infrared result exhibited characteristic bands corresponding to the phosphite group and the organic molecule. The thermal decomposition of the compound consists mainly of the loss of the organic moiety and the water molecules. The biological tests exhibited significant activity against Candida albicans and Escherichia coli strains in all used concentrations, while less activity was pronounced when tested against Staphylococcus epidermidis and Saccharomyces cerevisiae, while there was no activity against the nematode model Steinernema feltiae.
Keywords: hybrid phosphite; crystal structure; thermal behavior; biological activities; antimicrobial; micro-organisms hybrid phosphite; crystal structure; thermal behavior; biological activities; antimicrobial; micro-organisms
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Hamdi, N.; Chaouch, S.; Silva, I.; Ezahri, M.; Lachkar, M.; Alhasan, R.; Abdin, A.Y.; Jacob, C.; Bali, B.E. Synthesis, Structural Characterization, and Biological Activities of Organically Templated Cobalt Phosphite (C4N2H14)Co(H2PO3)4·2H2O. Sci 2019, 1, 13.

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