The Reduction of Pyridine by K12Si17 to the 4,4′-Bipyridine Radical Anion [C10H8N2]-•: Crystal Structure and Spectroscopic Characterization of [K([2.2.2]crypt)][C10H8N2]

Abstract

Abstract From an anhydrous pyridine extract of the binary Zintl phase K12Si17 in the presence of the cation sequestering agent [2.2.2]crypt (4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane) crystals of the compound [K([2.2.2]crypt)][C10H8N2] have been isolated which contains the 4,4′- bipyridine radical monoanion. This compound was fully characterized by X-ray diffraction, 1H, 13C NMR, EPR, IR and UV=Vis spectroscopy