The reactions of (2,6-Mes 2 C 6 H 3 ) 2 GaCl (2) with LiMe, Li-t-Bu, and LiHBEt 3 afforded the bis(terphenyl)gallium compounds (2,6-Mes 2 C 6 H 3 ) 2 GaMe (3), (2,6-Mes 2 C 6 H 3 ) 2 Ga-t-Bu (4) and (2,6-Mes 2 C 6 H 3 ) 2 GaH (5). Hydrolysis of 2 and 3 gave the dimeric, hydroxide-bridged species [2,6-Mes 2 C 6 H 3 Ga(Cl)(µ-OH)] 2 (6) and [2,6-Mes 2 C 6 H 3 Ga(Me)(µ-OH)] 2 (7) via loss of the terphenyl substituent as 1,3-Mes 2 C 6 H 4 . Hydrolysis of 5 led to the loss of H 2 and the formation of the monomeric (2,6-Mes 2 C 6 H 3 ) 2 GaOH (8). The compounds were characterized by FTIR and 1 H and 13 C{ 1 H} NMR spectroscopy and X-ray crystallography. The structural studies of the diterphenyl compounds 2-5 and 8 showed the highly flexible nature of these compounds, as expressed in the wide range of the C Terph -Ga-C Terph angles from 113.23°in 4 to 153.5°i n 2. Methyl and hydride abstraction from 3 and 5 with the Lewis acids [Ph 3 C] + [B(C 6 F 5 ) 4 ]and B(C 6 F 5 ) 3 afforded the ionic species [(2,6
The title compound [2,6-Mes(2)C(2)H(3)](2)Ga(+)Li[Al(OCH(CF(3))(2))(4)](2)(-), 1, containing a linear two-coordinate gallium cation, has been obtained by metathesis reaction of [2,6-Mes(2)C(2)H(3)](2)GaCl with 2 equiv of Li[Al(OCH(CF(3))(2))(4)] in C(6)H(5)Cl solution at room temperature. Compound 1 has been characterized by (1)H, (13)C((1)H), (19)F, and (27)Al NMR spectroscopy and X-ray crystallography. Compound 1 consists of isolated [2,6-Mes(2)C(6)H(3)](2)Ga(+) cations and Li[Al(OCH(CF(3))(2))(4)](2)(-) anions. The C-Ga-C angle is 175.69(7) degrees, and the Ga-C distances are 1.9130(14) and 1.9145(16) A. The title compound is remarkably stable, is only a weak Lewis acid, and polymerizes cyclohexene oxide.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.