Vanadyl sulfates: molecular structure, magnetism and electrochemical activity

Abstract

Use of different calixarenes with vanadyl sulfate/base under N2 affords different polyoxovanadates. Molecular structures, electrochemical activity and magnetism are reported.

Operando Raman Shift Replaces Current in Electrochemical Analysis of Li-ion Batteries: A Comparative Study

“…In order to have a deeper insight into the mechanism of battery operation, the distinction between electrochemical processes of charge transfer and mass transport is needed for the disambiguation of the merits governing the kinetics of chemical and physical processes [ 17 ]. As heterogeneous charge transfer and mass transport are two main phenomena occurring within the battery, the kinetic parameters of both should be elucidated by the use of dedicated electrochemical techniques spanning from polarization (Tafel plot) to electrochemical impedance spectroscopy (EIS) [ 18 ].…”

Co‐polymerization of propylene oxide and CO2 using early transition metal (groups IV and V) metallocalix[n]arenes (n = 4, 6, 8)

“…A new vanadyl complex 4 was isolated by reacting p‐ tert ‐butylthiacalix[4]areneH 4 (L 3 H 4 ) with [VOSO 4 ] in the presence of triethylamine in dry methanol under nitrogen. Following removal of the solvent, the residue was washed with acetonitrile to remove the known (blue) complex [HNEt 3 ] 5 [(VO) 5 (μ 3 ‐O) 4 (SO 4 ) 4 ] 56 . Subsequent extraction of the remaining residue into dichloromethane afforded the methoxide‐bridged salt [HNEt 3 ] 2 [VO(μ‐OMe)L 3 H 2 ] 2 ∙3CH 2 Cl 2 (4∙3CH 2 Cl 2 ) (ca.…”

“…51,52 The complexes [V(p-RC 6 H 4 N) Cl 3 ] were prepared according to the method reported by Maatta et al 53 [TiCl 4 (THF) 2 ] was prepared by the method of Schrock et al 54 All other chemicals were purchased from commercial companies and used without further purification. The complexes 1, 55 2, 56 3, 57 5, 6, 58 and 10-12, 59 were prepared by the literature methods.…”

The crystal structure of tetrakis(1-methylimidazole-κ1 N)-oxido-(sulfato-κ1 O)vanadium(IV), C16H24N8O5SV

“…The significant interest in coordination chemistry of oxo vanadium species is owing to their relevance to organic catalysis [4,5] and bioactivity [6][7][8][9][10]. It is very meaningful to synthesize complexes based on vanadium.…”