Four Ni (II) coordination supramolecules {[Ni(bipy)(H₂O)₄]•(bdc)} (1), [Ni(PhCOO)(phen)- (H₂O)₃]•(PhCOO) (2), [Ni(dcpz)(H₂O)₄] (3), [Ni(pic)₂(H₂O)₂] (4) were hydrothermally synthesized with the derivatives of different rigid organic carboxylic acid as ligands (H₂bdc＝m-phthalic acid, PhCOO＝benzoate, H₂dcpz＝pyrazole-3,5-dicarboxylic acid, Hpic＝2-pyrazinecarboxylic acid, bipy＝2,2- bipyridine, phen＝1,10-phenanthroline). The crystal structures of the complexes were determined by X-ray single crystal diffraction, and complexes were characterized by surface photovoltage spectrum (SPS), IR, UV-Vis-NIR spectra and XRD. The results indicate that complexes (1)～(4) are mononuclear complexes, connected by intermolecular hydrogen bonds into 1D, 2D or 3D hydrogen-bonded network structure. Comparative study of SPS for four complexes shows that they all exhibit positive surface photovoltage response (SPV) in the range of 300～800 nm, which indicates that they all possess certain photo-electric conversion properties. The effect of structure of the complexes, type of organic ligands, hydrogen bonds and coordination environment of the central metal ions on the photo-electric properties were discussed. Furthermore, the SPS and UV-Vis spectra were interrelated.

Key words: Ni(II) coordination supramolecule, synthesis, structure, hydrogen bond, photo-electric property