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Russian Journal of Coordination Chemistry

, Volume 45, Issue 12, pp 876–882 | Cite as

Molecular and Inner Complex Compounds of Dioxomolybdenum(VI) with Disubstituted Salicydenealcoholimines: Crystal Structure of 1 : 1 Dioxo(3,5-Dibromosalicylidenemonoethanoliminato)molybdenum(VI) Solvate with Methanol [MoO2(L1) · MeOH] (L1 = C9H7Br2NO2)

  • V. S. SergienkoEmail author
  • V. L. Abramenko
  • Yu. E. Gorbunova
  • A. V. Churakov
Article
  • 4 Downloads

Abstract

Complexes of dioxomolybdenum(VI) of the molecular (МоО2Сl2 · 2H2L) and inner complex ([MoO2L · Solv]) types are synthesized (H2L are azomethines, derivatives of disubstituted R1,R2-salicylaldehydes (R1, R2 = 3.5-Вr2; R1 = 3-МеО, R2 = 5-Вr) and monoethanolamine; Solv is a methanol, dimethylformamide, pyridine, or α-picoline molecule). The cis-octahedral structure of the complexes is concluded on the basis of the IR spectroscopic data. In the molecular compounds, the ligands are coordinated via the O atom of the carbonyl group of the H2L tautomeric form. In the inner complex compounds, the ligands are coordinated in the deprotonated benzoid form. The structure of [MoO2(L1) · МеОН] (I) (where L1 is C9H7Br2NO2) is determined by X-ray diffraction analysis (СIF file CCDC no. 1898088). In the mononuclear molecule of compound I, the Mo atom has the octahedral coordination by two oxo ligands, two oxygen atoms, the nitrogen atom of the tridentate bis(chelate) two-charge ligand (L1)2–, and the O atom of the methanol molecule. The neutral N(1) and O(1) atoms of the L1 and МеОН ligands, respectively, are arranged in the trans positions to the O(oxo) ligands. The Mo–N(1) (2.265 Å) and Мо–О(1) (2.372 Å) bonds are substantially elongated due to the structural manifestation of the trans effect of the multiply bonded oxo ligands. The intermolecular hydrogen bonds (МеОН)О–Н···О(oxo) join the molecules into supramolecular 1D chains.

Keywords:

synthesis IR spectroscopy X-ray diffraction analysis dioxomolybdenum(VI) complexes salicylidenealcoholiminate ligands 

Notes

ACKNOWLEDGMENTS

The X-ray diffraction analysis was carried out at the Center for Collective Use of Physical Methods of Investigation at the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences).

FUNDING

This work was carried out in the framework of the state task of the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in the area of basic research.

CONFLICT OF INTEREST

The authors declare that they have no conflicts of interest.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • V. S. Sergienko
    • 1
    • 2
    Email author
  • V. L. Abramenko
    • 3
  • Yu. E. Gorbunova
    • 1
  • A. V. Churakov
    • 1
  1. 1.Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesMoscowRussia
  2. 2.All-Russia Institute of Scientific and Technical Information, Russian Academy of SciencesMoscowRussia
  3. 3.Vladimir Dal National UniversityLuganskUkraine

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