Metal oxocations

Abstract

Presents a survey of recent developments regarding metal oxocations and oxocation chemistry.

New Square-Pyramidal Oxovanadium (IV) Complexes Derived from Polydentate Ligand (L<sup>1</sup>)

“…The spectrum also shows broad bands in the 3222 -3447 cm −1 region together with a band at 1604 cm −1 region assigned to ѵ(OH) and ∂(OH) vibrations of H 2 O molecule, respectively. Existence of strong band at 976 cm −1 is strong evidence for the coordination of vanadium ion with L 1 as it is characterized for V=O vibration in VO 2+ [25]. In addition, new bands are observed at 424 and 452 cm −1 which are assigned to V-N bonds of pyridine and triazine, respectively, and at 515 and 592 cm −1 which are assigned to V-O bond [26].…”

“…New bands are [26]. Additionally, thevanadyl complex shows a strong band at 984 cm −1 which may be attributed to the ѵ(V=O)vibration of VO 2+ [25]. Also, the bands at 427, 653, 978, 1033 cm −1 are assigned to coordinated 2 4 SO − group and the position of bands assigned to that [26].…”

“…Also, the bands at 427, 653, 978, 1033 cm −1 are assigned to coordinated 2 4 SO − group and the position of bands assigned to that [26]. The oxovanadium complex shows a strong band at 971 cm −1 attributed to the high π-band order of vanadium to oxygen link of VO 2+ [25]. The bands are observed at 434, 613, 971, 1032 cm −1 are assigned to the coordinated 2 4 SO − group and the position of bands assigned to that 2 4 SO − group bonded inunidentatemanner.…”

“…The bands observed in the 1478 -1262 cm −1 region are assigned to (C-N+C-C) while the band at 767 cm −1 is assigned to the aromatic C-H deformation vibration. A vanadyl complex shows a band at 978 cm −1 which may be attributed to the ѵ(V=O) vibration of VO 2+ [25]. New bands are [26].…”

“…Vanadium complexes have various biological activities, for example, an insulin-like activity [1]- [2] and the de- (18), 432 (19), 392 (70), 312 (100), 104 (45), 78 (26), (64) (25), (52) (26). Anal.…”