Re-examination of the electron spin resonance spectrum of trigonal-prismatic bis[pentane-2,4-dione benzoylhydrazonato(2–)]vanadium(IV)

Abstract

The e.s.r. spectrum of the title complex has been reinterpreted in terms of completely anisotropic g and hyperfine tensors. Analysis of these tensors indicates that the unpaired electron occupies an orbital which is ca. 88% metal 3d in character (78%d_z², 10%d_x²–y²) and 2% metal 4s. Except for the anisotropy of the 3d contribution, this is virtually identical to the corresponding orbital in [V(mnt)₃]^2–(mnt = maleonitriledithiolate).