Gallium Hydrides with a Radical-Anionic Ligand
Posted on 2017-10-12 - 14:22
The reaction of Cl2GaH with a sodium salt of the dpp-Bian radical-anion (dpp-Bian•–)Na (dpp-Bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene)
affords paramagnetic gallane (dpp-Bian•–)Ga(Cl)H
(1). Oxidation of (dpp-Bian2–)Ga–Ga(dpp-Bian2–) (2) with N2O results in
the dimeric oxide (dpp-Bian•–)Ga(μ2-O)2Ga(dpp-Bian•–) (3). A treatment of the oxide 3 with phenylsilane
affords paramagnetic gallium hydrides (dpp-Bian•–)GaH2 (4) and (dpp-Bian•–)Ga{OSi(Ph)H2}H (5) depending on the reagent’s
stoichiometry. The reaction of digallane 2 with benzaldehyde
produces pinacolate (dpp-Bian•–)Ga(O2C2H2Ph2) (6).
In the presence of PhSiH3, the reaction between digallane 2 and benzaldehyde (2: PhSiH3: PhC(H)O
= 1:4:4) affords compound 4. The newly prepared complexes 1, 3–6 consist of a spin-labeled
diimine ligand–dpp-Bian radical-anion. The presence of the
ligand-localized unpaired electron allows the use of the ESR spectroscopy
for characterization of the gallium hydrides reported. The molecular
structures of compounds 1, 3–6 have been determined by the single-crystal X-ray analysis.
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Sokolov, Vladimir G.; Koptseva, Tatyana S.; Moskalev, Mikhail V.; Bazyakina, Natalia L.; Piskunov, Alexander V.; Cherkasov, Anton V.; et al. (2017). Gallium Hydrides with a Radical-Anionic Ligand. ACS Publications. Collection. https://doi.org/10.1021/acs.inorgchem.7b02138
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AUTHORS (7)
VS
Vladimir G. Sokolov
TK
Tatyana S. Koptseva
MM
Mikhail V. Moskalev
NB
Natalia L. Bazyakina
AP
Alexander V. Piskunov
AC
Anton V. Cherkasov
IF
Igor L. Fedushkin