Synthesis and Surface Photoelectric Properties of a Trinuclear Chromium(III) Complex

A trinuclear Chromium(III) complex [Cr-3(mu(3)-O)(mu(2)-PCBA)(6)(CH3OH)(3)]NO3 center dot H2O center dot CH3OH (HPCBA = 4-Chlorobenzoic acid) has been synthesized and characterized by single-crystal X-ray diffraction, IR spectra, UV-Vis absorption spectra and elemental analysis, which belongs to monoclinic, space group P2(1)/c with a = 12.443 (3), b = 24.543 (5), c =22.094 (7)angstrom, alpha = 90 degrees, beta=115.76 (2)degrees, gamma=90 degrees, V = 6077 (3)angstrom(3), Z = 4.The surface electron behavior of the chromium complex has been studied emphatically by surface photovoltage spectroscopy (SPS). Structural analyse indicate that the complex is molecular complex. The result of SPS show that there is positive photovoltage response bands within 300-800 nm, which indicate that it possess obvious photoelectric conversion properties. There was a good correlation between the SPS and UV-Vis absorption spectra.