Weinert Hanns M, Wölper Christoph, Haak Julia, Cutsail George E, Schulz Stephan
Institute for Inorganic Chemistry, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstraße 5-7 45117 Essen Germany
Max Planck Institute for Chemical Energy Conversion (CEC) Stiftstraße 34-36 45470 Mülheim a. d. Ruhr Germany.
Chem Sci. 2021 Aug 30;12(42):14024-14032. doi: 10.1039/d1sc04230k. eCollection 2021 Nov 3.
Cyclic voltammetry (CV) studies of two L(X)Ga-substituted dipnictenes [L(RN)GaE] (E = Sb, R = Me ; E = Bi; R = Et ; L = HC[C(Me)NDipp]; Dipp = 2,6--PrCH) showed reversible reduction events. Single electron reduction of and with KC in DME in the presence of benzo-18-crown-6 (B-18-C-6) gave the corresponding dipnictenyl radical anions (DME)[K(B-18-C-6)][L(RN)GaE] (E = Sb, R = Me ; E = Bi, R = Et ). Radical anions and were characterized by EPR, UV-vis and single crystal X-ray diffraction, while quantum chemical calculations gave deeper insight into the nature of the chemical bonding.
对两种L(X)Ga取代的双氮烯[L(RN)GaE]（E = Sb，R = Me；E = Bi，R = Et；L = HC[C(Me)NDipp]；Dipp = 2,6 - -PrCH）进行的循环伏安法（CV）研究显示出可逆的还原过程。在18 - 冠 - 6（B - 18 - C - 6）存在下，于二甲醚（DME）中用KC对 和 进行单电子还原，得到相应的双氮烯基自由基阴离子（DME）[K(B - 18 - C - 6)][L(RN)GaE]（E = Sb，R = Me；E = Bi，R = Et）。通过电子顺磁共振（EPR）、紫外 - 可见光谱（UV - vis）和单晶X射线衍射对自由基阴离子 和 进行了表征，而量子化学计算则更深入地揭示了化学键的本质。
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