W. Uhl et al., Unexpected formation of gallium-gallium single bonds by irradiation of thehydride [(Me3C)(2)GaH](3), J CHEM S DA, (16), 2001, pp. 2398-2400
Citations number
45
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Di(tert-butyl)gallium hydride I dismutates partially in solution forming tr
i(tert-butyl)gallium 2 and the sesquihydride [(Me3C)(2)GaH](2)[H2GaCMe3](2)
(3). The loss of tert-butyl radicals upon irradiation of this mixture with
day light or an UV lamp gave the hexagallium compound (Me3CGaGaCMe3)(2)(mu
-H)(2)[mu -H2Ga(CMe3)(2)](2) (4), which possesses two Ga-Ga single bonds.
These Ga-2 groups are bridged by two hydrogen atoms to give a six-membered
Ga4H2 heterocycle. Couples of opposite gallium atoms of this heterocycle ar
e bridged via Ga-H-Ga 3c-2e bonds by two H2Ga(CMe3)(2) ligands, which are s
ituated above and below the molecular plane. Compound 4 may be described as
a hypho-hexagallane(14) cluster compound.