Institutul de Fizică Aplicată

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Author: search.filters.author.Kravțov, VictorSubject: search.filters.subject.difracția cu raze X

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    ANALIZA SUPRAFEȚEI HIRSHFELD ALE INTERACȚIUNILOR INTERMOLECULARE ÎN CO-CRISTALE DE [Co(NH3)6]3+ ȘI ACID 3-SULFOBENZOIC
    (CEP USM, 2024) Beleaev, Ecaterina; Kravțov, Victor; Baca, Svetlana
    Hydrogen bonding has been shown to be predominant among the interaction types for systems involving the [Co(nH3)6]3+cation and various anions/molecules. This study examines the role of intermolecular bonds and their quantitative and qualitative investigation between 3-sulfobenzoic acid (3-sbH2) and the cobalt(III) hexaamine complex cation in molecular crystals. Two new multi-component compounds [Co(nH3)6]Cl(3-sb)·H2O (1) and [Co(nH3)6]2Cl2(3-sb) (sO4)·7H2O (2) were synthesized and characterized. The single crystal X-ray diffraction study reveals that in these compounds the complex cation [Co(nH3)6]3+ serves as a basic element for the incorporation of various anions/molecules and promotes the formation of multi-component compounds with extended networks via H-bonds. The analysis of the Hirshfeld surfaces allowed the quantitative and qualitative identifcation of the main contacts involved in the molecular packing of the crystals.
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    POLIMER COORDINATIV UNI-DIMENSIONAL DE Cu(II) ÎN BAZA ACIDULUI IZOBUTIRIC ȘI PIRAZINĂ: SINTEZA ȘI STRUCTURA
    (CEP USM, 2024) Capbătut, Olga; Kravțov, Victor; Baca, Svetlana
    Coordination polymers are playing an increasingly important role in the feld of inorganic chemistry. Of particular interest is the use of Cu(II) carboxylates to assemble new compounds involving various bridging ligands for the formation of coordination polymers. a new [Cu(is)2(pyz)] n coordination compound has been synthesized by the reaction of Co(II) isobutyrate with pyrazine (pyz) ligand in acetonitrile. a single-crystal X-ray diffraction analysis shows that the pepared compound is a one-dimensional coordination polymer in which the [Cu(is)2] units are connected by pyrazine ligands into chains.