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Intracomplex Dioxomolybdenum(VI) Compounds with Alcoholimines of Aromatic o-Hydroxyaldehydes. Crystal Structure of 2-Hydroxynaphthylidene Monoethanolimine (H2L) and Solvated Complex [MoO2(L) · C5H5N]

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Abstract

A Schiff base, which is a derivative of 2-hydroxynaphthaldehyde and monoethanolamine (H2L), and an intracomplex compound of dioxomolybdenum(VI) [MoO2(L) · C5H5N] (I) have been synthesized. The structures of H2L and I have been determined by IR spectroscopy and X-ray diffraction. In the mononuclear molecule I, the Mo atom has an octahedral coordination formed by two oxo-ligands (Mo=O 1.683(4) and 1.697(3) Å), two O atoms of deprotonated hydroxy groups of the alcohol (Mo–O(4) 1.919(4) Å) and aldehyde (Mo–O(3) 1.962(3) Å) fragments, as well as the N atom of the tridentate bis-chelate doubly charged ligand L2– (Mo–NL 2.262(4) Å) and the N atom of the pyridine molecule (Mo–NPy 2.496(4) Å). The Mo–NL and Mo–NPy bonds are significantly elongated due to the structural manifestation of trans-influence of multiply bound oxo ligands. The free H2L molecule crystallizes in the quinoid (keto-amine) tautomeric form, and in complex I it is coordinated in the double-deprotonated benzoid (enol-imine) form.

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ACKNOWLEDGMENTS

X-ray diffraction analysis was performed in the Center for Collective Use of the Kurnakov Institute.

Funding

This work was carried out as part of the State Assignment of the Kurnakov Institute in the field of basic research.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    V. S. Sergienko & M. D. Surazhskaya

  2. All-Russia Institute for Scientific and Technical Information, Russian Academy of Sciences, 125190, Moscow, Russia

    V. S. Sergienko

  3. Odessa National University, 65082, Odessa, Ukraine

    V. L. Abramenko

Authors
  1. V. S. Sergienko
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  2. V. L. Abramenko
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  3. M. D. Surazhskaya
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Correspondence to V. S. Sergienko.

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Translated by V. Avdeeva

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Sergienko, V.S., Abramenko, V.L. & Surazhskaya, M.D. Intracomplex Dioxomolybdenum(VI) Compounds with Alcoholimines of Aromatic o-Hydroxyaldehydes. Crystal Structure of 2-Hydroxynaphthylidene Monoethanolimine (H2L) and Solvated Complex [MoO2(L) · C5H5N]. Russ. J. Inorg. Chem. 65, 495–501 (2020). https://doi.org/10.1134/S0036023620040166

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