Two-coordinate iron(I) complex [FeN(SiMe3)22]−: Synthesis, properties, and redox activity

C. Gunnar Werncke (1, 2) , Philip C. Bunting (3) , Carine Guyard-Duhayon (1) , Jeffrey R. Long (3) , Sébastien Bontemps (1) , Sylviane Sabo-Etienne (1)

1 LCC - Laboratoire de chimie de coordination
2 UT3 - Université Toulouse III - Paul Sabatier
3 UC Berkeley - University of California [Berkeley]

First-row two-coordinate complexes are attracting much interest. Herein, we report the high-yield isolation of the linear two-coordinate iron(I) complex salt [K(L)][FeN(SiMe3)22] (L=18-crown-6 or crypt-222) through the reduction of either [FeN(SiMe3)22] or its three-coordinate phosphine adduct [FeN(SiMe3)22(PCy3)]. Detailed characterization is gained through X-ray diffraction, variable-temperature NMR spectroscopy, and magnetic susceptibility studies. One- and two-electron oxidation through reaction with I2 is further found to afford the corresponding iodo iron(II) and diiodo iron(III) complexes.

Domaines: Chimie de coordination

C. Gunnar Werncke, Philip C. Bunting, Carine Guyard-Duhayon, Jeffrey R. Long, Sébastien Bontemps, et al.. Two-coordinate iron(I) complex [FeN(SiMe3)22]−: Synthesis, properties, and redox activity. Angewandte Chemie International Edition, 2015, 54 (1), pp.245-248. ⟨10.1002/anie.201408802⟩. ⟨hal-01923279⟩