A new complex of oxovanadium (IV), V2O2 [(HB (pz) 3) 2 (pyrro) 2 (1) and a dimer-dithio carboxyl compound (C5H8NS2) 2 (2) have been synthesized by the reaction of VOSO4· nH2O with NaHB (pz) 3 and pyrrolidine dithio carboxylic acid ammonium salt. They were characterized by element analysis, IR spectra, UV–vis spectra and X-ray diffraction. Structural analyses of 1 and 2 gave the following parameters: 1, triclinic, P-1, a= 7.732 (4) ...