Charge Delocalization and Bulk Electronic Conductivity in the Mixed-Valence Metal–Organic Framework Fe(1,2,3-triazolate)2(BF4)x

摘要: Metal–organic frameworks are of interest for use in a variety electrochemical and electronic applications, although detailed understanding their charge transport behavior, which is critical importance enhancing conductivities, remains limited. Herein, we report isolation the mixed-valence framework materials, Fe(tri)2(BF4)x (tri– = 1,2,3-triazolate; x 0.09, 0.22, 0.33), obtained from stoichiometric chemical oxidation poorly conductive iron(II) Fe(tri)2, find that conductivity increases dramatically with iron level. Notably, most oxidized variant, Fe(tri)2(BF4)0.33, displays room-temperature 0.3(1) S/cm, represents an increase 8 orders magnitude parent material one highest values reported among three-dimensional metal–organic frameworks. Detailed characterization Fe(tri)2 materials via powder X-ray diffraction, Mossbauer spectrosco...