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Synthesis and characterization of a stable paramagnetic hexacoordinated oxochromium(IV) complex with dianionic tetradentate Schiff base ligand salen by Manjuri K. Koley; Periakaruppan T. Manoharan; Aditya P. Koley is a Chemistry article available to read on EtoBox.
What is Synthesis and characterization of a stable paramagnetic hexacoordinated oxochromium(IV) complex with dianionic tetradentate Schiff base ligand salen about?
A paramagnetic octahedral oxochromium(IV) complex with dianionic tetradentate ligand salen (where H 2 salen is N,N 0 -bis(salicylidene)-1,2-ethylenediamine) has been synthesized. This compound [CrO(OH 2 ) (salen)] ( 1) is characterized by elemental analysis, magnetic moment measurement, IR, UV-Vis and EPR spectroscopic studies. Measured room temperature (RT) magnetic moment value is 2.96 BM for 1 indicates a d 2 system with a triplet ground state. The magnetic moment value rules out a large spin-orbit coupling. The RT and LNT powder EPR spectra of 1 in X-band clearly shows two lines, one around g = 1.965 and the other with larger intensity at g = 4.26 ± 0.10. The first line at g = 1.965 corresponds to the |0> M |±1> transition from the Kramers doublet |±1>, while the broad and intense line at low field with the g-value of 4.26 ± 0.10 is due to the forbidden transition |À1> M |+1>. Compound 1 displays two successive reductions at À0.76 and À1.63 V (versus Ag/AgCl), respectively, while it undergoes only one irreversible oxidation as evident from the well-defined anodic wave at +1.48 V in its cyclic voltammogram.
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- Author
- Manjuri K. Koley; Periakaruppan T. Manoharan; Aditya P. Koley
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)
- Published
- 2010
- Language
- EN
- Field
- Chemistry (Physical Sciences)