Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium

Hellmann B, Mix A, Neumann B, Stammler H-G, Mitzel NW (2010)
DALTON TRANSACTIONS 39(30): 7073-7079.

Journal Article | Published | English

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Abstract
The reaction of the donor functionalised N, N-bis[2-(pyrid-2-yl) ethyl] hydroxylamine [HON(C2H4-o-py)(2)] and three equivalents of the Lewis-acids AlMe3, GaMe3 or InMe3 resulted in the formation of dimethylhydroxylaminato-metal complexes of the general constitution [MMe2ON(C2H4-o-py)(2)center dot 2MMe(3)] with M = Al (1), Ga (2) or In (3) by methane elimination. An alternative method to generate complexes 1 and 2 is the transmetalation of [YCp2ON(C2H4-o-py)(2)] with an excess of AlMe3 or GaMe3, respectively. All compounds were characterised by elemental analysis, NMR spectroscopy and single-crystal X-ray diffraction. The complexes [GaMe2ON(C2H4-o-py)(2)center dot 2GaMe(3)] (2) and [InMe2ON(C2H4-o-py)(2)center dot 2InMe(3)] (3) show highly dynamic behaviour in solution with the two pyridine nitrogen atoms changing their coordination to the metal atoms rapidly at ambient temperature. VT H-1 NMR experiments showed that this dynamic exchange can be frozen on the NMR time scale. In contrast to 2 and 3, complex 1 does not change its coordination mode at ambient temperature in non-coordinating solvents.
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Hellmann B, Mix A, Neumann B, Stammler H-G, Mitzel NW. Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium. DALTON TRANSACTIONS. 2010;39(30):7073-7079.
Hellmann, B., Mix, A., Neumann, B., Stammler, H. - G., & Mitzel, N. W. (2010). Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium. DALTON TRANSACTIONS, 39(30), 7073-7079.
Hellmann, B., Mix, A., Neumann, B., Stammler, H. - G., and Mitzel, N. W. (2010). Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium. DALTON TRANSACTIONS 39, 7073-7079.
Hellmann, B., et al., 2010. Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium. DALTON TRANSACTIONS, 39(30), p 7073-7079.
B. Hellmann, et al., “Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium”, DALTON TRANSACTIONS, vol. 39, 2010, pp. 7073-7079.
Hellmann, B., Mix, A., Neumann, B., Stammler, H.-G., Mitzel, N.W.: Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium. DALTON TRANSACTIONS. 39, 7073-7079 (2010).
Hellmann, Benjamin, Mix, Andreas, Neumann, Beate, Stammler, Hans-Georg, and Mitzel, Norbert W. “Trinuclear pyridyl functionalised hydroxylaminato complexes of aluminium, gallium and indium”. DALTON TRANSACTIONS 39.30 (2010): 7073-7079.
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