EPR and optical studies of vanadium doped potassium dihydrogen citrate (C6H7KO7) single crystal.

EPR and optical studies of vanadium doped potassium dihydrogen citrate (C6H7KO7) single crystal.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2011-06-07)

Zeynep Yarbaşi, Abdulhalik Karabulut, Bünyamin Karabulut

ABSTRACT

An EPR and optical studies of VO2+ doped potassium dihydrogen citrate (PDHC) single crystals have been carried out at room temperature. It crystallizes in triclinic symmetry with the unit cell dimensions: a=11.343Å, b=13.078Å, c=6.272Å, α=89.79°, β=94.36°, γ=104.2°. The angular variation of EPR spectra have shown that two different VO2+ complexes are located in different chemical environments and each environment contains one magnetically VO2+ site occupying substitutional position in the lattice and show very high angular dependence.

MATERIALI

N° Catalogo

Marchio

Descrizione del prodotto

60153

Sigma-Aldrich

Potassium citrate tribasic monohydrate, purum p.a., ≥99.0% (NT)

C8385

Sigma-Aldrich

Potassium citrate tribasic monohydrate, ≥98% (GC/titration)

P1722

Sigma-Aldrich

Potassium citrate tribasic monohydrate, meets USP testing specifications

C3029

Sigma-Aldrich

Potassium citrate tribasic monohydrate, suitable for cell culture

25107

Sigma-Aldrich

Potassium citrate tribasic monohydrate, meets analytical specification of Ph. Eur., BP, FCC, E332, 99-100.5% (calc with ref. to anhyd. subst.)