REDUCTION PROPERTIES OF GERMANIUM DICHLORIDE WITH RESPECT TO THE REDOX-ACTIVE MONOIMINOACENAPHTENONE dpp-MIAN

Reaction of germanium dichloride [GeCl 2 (dioxane)] with 2-(2,6-diisopropylphenyl-imino)acenaphthylene-1-one (dpp-MIAN) leads to the reduction of dpp-MIAN and subsequent formation of the dianion bis-dpp-MIAN double ligand. Depending on the solvent, different products are formed. For example, reactio...

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Bibliographic Details
Published in:Journal of structural chemistry 2023-02, Vol.64 (2), p.288-301
Main Authors: Lukoyanov, A. N., Zvereva, Yu. V., Zhigulin, G. Yu, Razborov, D. A., Baranov, E. V., Ketkov, S. Yu
Format: Article
Language:English
Subjects:
Anions
Atomic
Atomic/Molecular Structure and Spectra
Chemistry
Chemistry and Materials Science
Crystallization
Dichlorides
Diethyl ether
Germanium
Germanium chlorides
Infrared spectroscopy
Inorganic Chemistry
Ligands
Molecular
NMR
Nuclear magnetic resonance
Optical and Plasma Physics
Oxygen atoms
Physical Chemistry
Reduction
Solid State Physics
Tetrahydrofuran
Toluene
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Summary:Reaction of germanium dichloride [GeCl 2 (dioxane)] with 2-(2,6-diisopropylphenyl-imino)acenaphthylene-1-one (dpp-MIAN) leads to the reduction of dpp-MIAN and subsequent formation of the dianion bis-dpp-MIAN double ligand. Depending on the solvent, different products are formed. For example, reaction in toluene and diethyl ether yields digermylene [{(bis-dpp-MIAN)Ge (II) }Ge (II) Cl 2 ] ( 1 ) where the doubled ligand is bonded to the divalent germanium atom by oxygen atoms, while the GeCl 2 species is coordinated by an oxygen atom. Complex 1 forms two polymorphs, depending on crystallization conditions. Crystallization from toluene yields the 1m polymorph in the P 2(1)/ c monoclinic modification, while crystallization in diethyl ether yields the 1o polymorph in the Pbca orthorhombic modification. Reduction of dpp-MIAN by germanium dichloride in tetrahydrofuran yields the [(bis-dpp-MIAN) 2 Ge (IV) ] complex ( 2 ) containing tetravalent germanium. Compounds 1 (polymorphs 1m and 1o ) and 2 are characterized by IR spectroscopy, NMR, and XRD.
ISSN:0022-4766
1573-8779
DOI:10.1134/S0022476623020130