Abstract
A new series of Co(II) complexes of the type CoLX2 , where Lis a tetra-dentate ligand 8,8'-bis(aminomethyl)-2,2'-biquinoline and X= SCN–, BF4–, I– or NO3– , have been synthesized and characterized. The complexes have magnetic moments in the range typical of a low-spin d7 Co(II) center. The interaction of these Co(II) complexes with dioxygen was studied by E.S.R. spectroscopy. A dicobalt(III) peroxo-bridged complex was formed in DMF solution, associated with the formation of an E.S.R.-silent solution compatible with the formation of low-spin d6 Co(III) species. Similar behavior was also observed for the interaction of these Co(II) complexes with dioxygen in the presence of ancillary ligands such as pyridine and 2-methylimidazole. The dioxygen complexes proved successful as oxygen carrier oxidation catalysts for tripehnylphosphine and 2,6-bis(t-butyl)phenol.
Keywords
Publication details
- DOI
- 10.24200/squjs.vol19iss2pp21-28
- Journal
- Sultan Qaboos University Journal for Science, 19(2), 21
- Publisher
- Sultan Qaboos University
- Open access
- Gold open access
- License
- CC BY 4.0
Cite this article
APA 7
Khan, M. S., Al‐Rasbi, N. K., & Constable, E. C. (2015). Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline. Sultan Qaboos University Journal for Science, 19(2), 21. https://doi.org/10.24200/squjs.vol19iss2pp21-28
MLA 9
Khan, Muhammad S., et al. "Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline." Sultan Qaboos University Journal for Science, vol. 19, no. 2, 2015, pp. 21. https://doi.org/10.24200/squjs.vol19iss2pp21-28.
Chicago (author–date)
Khan, Muhammad S., Nawal K. Al‐Rasbi, and Edwin C. Constable. 2015. "Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline." Sultan Qaboos University Journal for Science 19 (2): 21. https://doi.org/10.24200/squjs.vol19iss2pp21-28.
Harvard
Khan, M. S., Al‐Rasbi, N. K. and Constable, E. C. (2015) 'Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline', Sultan Qaboos University Journal for Science, 19(2), pp. 21. doi:10.24200/squjs.vol19iss2pp21-28.
Vancouver
Khan MS, Al‐Rasbi NK, Constable EC. Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline. Sultan Qaboos University Journal for Science. 2015;19(2):21. doi:10.24200/squjs.vol19iss2pp21-28
IEEE
M. S. Khan, N. K. Al‐Rasbi, and E. C. Constable, "Dioxygen Binding by Cobalt(II) Complexes of 8,8'-bis(aminomethyl)-2,2'-biquinoline," Sultan Qaboos University Journal for Science, vol. 19, no. 2, pp. 21, 2015, doi: 10.24200/squjs.vol19iss2pp21-28.