CRYSTAL AND MOLECULAR STRUCTURE OF THE ISLAND TETRANUCLEAR DIOXOMOLYBDENUM(VI) COMPLEX [MoO 2 ( L  1 )] 4  (H 2  L  1  IS ACETYLACETONE ISONICOTINOYLHYDRAZONE) WITH LARGE INTRA- AND INTERMOLECULAR CHANNELS

V. S. Sergienko; Сергиенко В. С.; V. L. Abramenko; Абраменко В. Л.; A. V. Churakov; Чураков А. В.

doi:10.31857/S0023476123020157

CRYSTAL AND MOLECULAR STRUCTURE OF THE ISLAND TETRANUCLEAR DIOXOMOLYBDENUM(VI) COMPLEX [MoO₂(L¹)]₄ (H₂L¹ IS ACETYLACETONE ISONICOTINOYLHYDRAZONE) WITH LARGE INTRA- AND INTERMOLECULAR CHANNELS

Authors: Sergienko V.S.¹, Abramenko V.L.², Churakov A.V.¹
Affiliations:
1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, 119991 Russia
2. Lugansk Vladimir Dal State University, Lugansk, Russia
Issue: Vol 68, No 2 (2023)
Pages: 262-267
Section: STRUCTURE OF ORGANIC COMPOUNDS
URL: https://rjmseer.com/0023-4761/article/view/673501
DOI: https://doi.org/10.31857/S0023476123020157
EDN: https://elibrary.ru/BSNZIJ
ID: 673501

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Abstract

The solvated complex [МоО2(L1)]4dimethylformamide (I) was synthesized. Its structure was
determined by X-ray diffraction analysis. The crystal structure is composed of the tetranuclear complexes [МоО2(L1)]4 (Ia) as the structural units lying on crystallographic twofold axes. Both crystallographically independent molybdenum atoms are in a distorted octahedral coordination environment formed by two cis-О(oxo) ligands, two N(L1) atoms of two molecules Ia in trans positions to the О(oxo) ligands, and two О(L1) atoms of one complex molecule in cis positions to О(oxo) and trans to each other. Each (L1)2– ligand is coordinated to two Мо atoms in a tetradentate tridentate-chelating (2О, N) bridging (N) mode. The average bond lengths in complex Iа are as follows: Мо–О(oxo), 1.701 Å; Мо–N(L1), 2.460 (b) and 2.214 Å (c); Мо–О(L1), 1.980 Å. The О(oxo)–МоО–(oxo) bond angle is 105.6°. The ordered dimethylformamide molecule is located in a narrow channel in the structure. The strongly disordered (non-located) solvent molecules (methanol/dimethylformamide/water) occupy wide channels in the structure of I.

Keywords

CRYSTAL AND MOLECULAR STRUCTURE, X-RAY DIFFRACTION ANALYSIS

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