Aryl Germanes as Ligands for Transition Polymetallic Complexes

Synthesis, Structure, and Properties

Kirill V. Zaitsev, Kevin Lam Georges, Oleg Kh Poleshchuk, Stanislav I. Bezzubov, Andrei V. Churakov

Research output: Contribution to journalArticle

Abstract

A series of new carbonyl dichromium complexes bearing aryl germanes as ligands were prepared using improved approaches. The thermal reaction of Cr(CO)6 (1) with Me3GeGePh3 (3) led to the formation of Me3GeGePh[(η6-C6H5)Cr(CO)3]2 (3a). The lithiation of [(η6-C6H6)Cr(CO)3] (2) with nBuLi followed by the addition of Me2GeCl2 (4) or ClGeMe2GeMe2Cl (5) gave Me2Ge[(η6-C6H5)Cr(CO)3]2 (4a) and [(OC)3Cr(η6-C6H5)]GeMe2GeMe2[(η6-C6H5)Cr(CO)3] (5a), respectively. The molecular structures of 3a and 4a, in their crystal forms, were studied by X-ray diffraction analysis. The crystals of oligogermane 3a have shown to undergo a fully reversible phase transition at 160 K without any sign of decomposition. The complexes synthesized were also studied by multinuclear NMR, IR and UV/Vis spectroscopy, DFT calculations and electrochemistry. The presence of a Cr(CO)3 group in a range of oligogermanes has shown to impact on the physical and chemical properties of the compounds.

Original languageEnglish
JournalEuropean Journal of Inorganic Chemistry
DOIs
Publication statusPublished - Jan 1 2019

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Carbon Monoxide
Ligands
Bearings (structural)
Crystals
Electrochemistry
Ultraviolet spectroscopy
Discrete Fourier transforms
Chemical properties
X ray diffraction analysis
Molecular structure
Physical properties
Phase transitions
Nuclear magnetic resonance
Decomposition

Keywords

  • Chromium
  • Donor-acceptor properties
  • Germanium
  • Reversible phase transition
  • σ-Conjugation

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Aryl Germanes as Ligands for Transition Polymetallic Complexes : Synthesis, Structure, and Properties. / Zaitsev, Kirill V.; Lam Georges, Kevin; Poleshchuk, Oleg Kh; Bezzubov, Stanislav I.; Churakov, Andrei V.

In: European Journal of Inorganic Chemistry, 01.01.2019.

Research output: Contribution to journalArticle

Zaitsev, Kirill V. ; Lam Georges, Kevin ; Poleshchuk, Oleg Kh ; Bezzubov, Stanislav I. ; Churakov, Andrei V. / Aryl Germanes as Ligands for Transition Polymetallic Complexes : Synthesis, Structure, and Properties. In: European Journal of Inorganic Chemistry. 2019.
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