The molecular structure of gaseous dimethylamidogallane: characterization of the dimer [Me2NGaH2]2 by electron diffraction and vibrational spectroscopy
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 4,p. 807-814
- https://doi.org/10.1039/dt9850000807
Abstract
The structure of gaseous dimethylamidogallane has been determined by electron diffraction. The predominant species is shown to be not the monomer Me2NGaH2, as suggested previously, but the dimer [Me2NGaH2]2 with a cyclic Ga2N2 skeleton and effective symmetry D2h. Salient structural parameters (ra) are: r(Ga–N) 202.7(0.4), r(Ga–H) 148.7(3.6), and r(N–C) 146.3 (1.3) pm; Ga–N–Ga 90.6(0.8) and C–N–C 109.6(1.6)°. The vibrational spectra of the compound, with either hydrogen or deuterium linked to the gallium, indicate that the dimeric unit is retained in benzene solution and in the crystalline state and have been analysed accordingly.Keywords
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