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Synthesis, structure and bonding nature of heavy dipnictene radical anions† † Electronic supplementary information (ESI) available: Detailed synthetic procedures and analytical data, NMR, IR, EPR, and UV-vis spectra, computational details and cif files. CCDC 2077932 (3) and 2080779 (4). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/d1sc04230k

ABSTRACT: Cyclic voltammetry (CV) studies of two L(X)Ga-substituted dipnictenes [L(R2N)GaE]2 (E = Sb, R = Me 1; E = Bi; R = Et 2; L = HC[C(Me)NDipp]2; Dipp = 2,6-i-Pr2C6H3) showed reversible reduction events. Single electron reduction of 1 and 2 with KC8 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(R2N)GaE]2 (E = Sb, R = Me 3; E = Bi, R = Et 4). Radical anions 3 and 4 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. Dipnictene radical anions [K(DME)(B-18-C-6)][{L(R2N)GaE}2] (E = Sb, Bi) were characterized by single crystal X-ray diffraction, EPR spectroscopy and quantum chemical calculations.

SUBMITTER: Weinert H

PROVIDER: S-EPMC8565390 | biostudies-literature |

REPOSITORIES: biostudies-literature

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