Synthesis, Structure, UV-Visible and Infrared Spectral Studies of 1-Phenyl-3-methyl-4-acylpyrazolone-5 Complexes with Vanadiuh(IV)

Abstract

Some 1-phenyl-3-methyl-4-acylpyrazolone Complexes with vanadlum(IV) were syntheslsed and characterised using UV-viaible and IR spectral studies. The general molecular formula of the complexes was found to be VOA₂- where A is the 4-acylpyrazolone anion. The V=0 appeared near 895 cm⁻¹ and this low absorption band is attributed to a possible presence of bridging vanadyl groups in the complexes. ²E_g←²T_2g transitions were observed within the 24.7–24.4 × 10³ cm⁻¹ range due to an octahedral field in the complexes.