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The three-coordinate complex Me2Ga[B(NArCH)2] (Ar = C6H3iPr2-2,6) is accessible via a tandem Lewis acid-base metathesis protocol employing (THF)2Li[B(NArCH)2] and GaMe3. It features a very short Ga-B bond of 2.067(3) Å, which was further investigated by DFT calculations and the analysis of the electron density. Reaction of MeLi with Me2Ga[B(NArCH)2] forms tetrameric [LiMe3Ga{B(NArCH)2}]4 with a "nanowheel" structure.
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Dettenrieder et al. (2013) studied this question.
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