A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols

Schmidt ES, Schier A, Mitzel NW, Schmidbaur H (2001)
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 56(4-5): 337-341.

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Abstract
Gallium(I) tetrachlorogallate(III) Ga[GaCl4] was prepared in quantitative yield by thermal decomposition of dichlorogallane [HGaCl2](2), which is readily available from Et3SiH and [GaCl3]2. The reaction of catechol with solutions of this gallium(I) tetrachlorogallate(III) in tetrahydrofuran leads to the evolution of hydrogen gas and affords a dinuclear gallium(III) complex with penta-coordinate metal atoms chelated and bridged by mono-deprotonated catechol ligands. In the crystalline phase tetrahydrofuran molecules are hydrogen-bonded to the hydroxy groups: [Ga(1,2-OC6H4OH)Cl-2(C4H8O)](2). The reaction with pinacol also gives hydrogen and the analogous product [Ga(OCMe2CMe2OH)Cl-2(C4H8O)](2). The structures of the two compounds have been determined by X-ray diffraction. A mechanism of the new reaction has been proposed which involves oxidative addition of the diol to the solvate (THF)Cl2Ga-GaCl2(THF) present in the tetrahydrofuran solution to give a gallium hydride intermediate.
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Schmidt ES, Schier A, Mitzel NW, Schmidbaur H. A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES. 2001;56(4-5):337-341.
Schmidt, E. S., Schier, A., Mitzel, N. W., & Schmidbaur, H. (2001). A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 56(4-5), 337-341.
Schmidt, E. S., Schier, A., Mitzel, N. W., and Schmidbaur, H. (2001). A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 56, 337-341.
Schmidt, E.S., et al., 2001. A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 56(4-5), p 337-341.
E.S. Schmidt, et al., “A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols”, ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, vol. 56, 2001, pp. 337-341.
Schmidt, E.S., Schier, A., Mitzel, N.W., Schmidbaur, H.: A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES. 56, 337-341 (2001).
Schmidt, ES, Schier, A, Mitzel, Norbert W., and Schmidbaur, H. “A simple high-yield synthesis of gallium(I) tetrachlorogallate(III) and the reaction of digallium tetrachloride tetrahydrofuran solvate with 1,2-diols”. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 56.4-5 (2001): 337-341.
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