Journal
INORGANIC CHEMISTRY
Volume 58, Issue 18, Pages 12441-12445Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.9b02136
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- Florida Institute of Technology
- Petroleum Research Fund [PRF 52856-ND3]
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Although gallium hydrides XnGaH3-n (X = monoanionic substituent) are usually stable compounds, cationic arene-solvated species [H2Ga(arene)(2)](+) spontaneously eliminate dihydrogen at room temperature to afford the arene-solvated gallium(I) compounds [Ga(PhF)(2)][CHB11Cl11] (1) and [Ga(Ph3CH)][B(C6F3)(4)] (3). A key requirement appears to be the presence of a weakly coordinating anion. Use of the more basic triflimide anion, [NTf2](-), reverses the stability, i.e., the gallium(III) hydride H2GaNTf2 (4) is more stable than the gallium(I) compound GaNTf2 (5). The experimental results are supported by DFT calculations. Compounds 1 and 3 can be used as catalysts for the oligomerization of 2,4,4-trimethyl-l-pentene and the hydrosilylation of benzophenone and 1-hexene.
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