Publication | Open Access
Synthesis, Structure, and Reactivity of Ga‐Substituted Distibenes and Sb‐Analogues of Bicyclo[1.1.0]butane
56
Citations
75
References
2017
Year
Monovalent gallanediyl LGa {L=HC[C(Me)N(2,6-iPr<sub>2</sub> C<sub>6</sub> H<sub>3</sub> )]<sub>2</sub> } reacts with SbX<sub>3</sub> to form the Ga-substituted distibenes [(LGaX)<sub>2</sub> Sb<sub>2</sub> ] (X=NMeEt 1, Cl 2). Upon heating, 2 reacts to the bicyclo[1.1.0]butane analogue [(LGaCl)<sub>2</sub> (μ,η<sup>1:1</sup> -Sb<sub>4</sub> )] 3 containing a [Sb<sub>4</sub> ]<sup>2-</sup> dianion. Moreover, 2 reacts with Li amides LiNR<sub>2</sub> in salt elimination reactions that form the corresponding amido-substituted compounds 1 and [(LGaNMe<sub>2</sub> )<sub>2</sub> Sb<sub>2</sub> ] 4, whereas reactions of 4 and [(LGaNMe<sub>2</sub> )<sub>2</sub> (μ,η<sup>1:1</sup> -Sb<sub>4</sub> )] 5 with two equivalents of GaCl<sub>3</sub> resulted in the formation of 2 and 3, respectively. 1, 2 and 3 were characterized by <sup>1</sup> H and <sup>13</sup> C NMR spectroscopy, elemental analysis, and single crystal X-ray diffraction. In addition, their bonding situation was analyzed by quantum chemical calculations.
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