| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1323710 | Journal of Organometallic Chemistry | 2011 | 8 Pages |
New series of cobaloximes, RCo(dSePhgH)2Py (R = Cl, Me, Et, n-Pr, n-Bu, Bn, 4–ClC6H4CH2) have been synthesized and characterized by NMR and elemental analysis. Molecular oxygen insertion in the benzyl complexes under photochemical conditions has been carried out and a comparison of its reaction rate with other similar cobaloximes gives the order dmestgH > dSePhgH > dpgH > dSPhgH ≥ dmgH > gH. The molecular structures of ClCo(dSePhgH)2Py, MeCo(dSePhgH)2Py, BnCo(dSePhgH)2Py, 4–ClC6H4CH2Co(dSePhgH)2Py and a dioxy complex Bn(O2)Co(dSePhgH)2Py have been determined by X-ray crystallography. The SePh groups in these complexes adopt either up-down, up-down or down-down, down-down conformations in the solid state depending upon the steric bulk and steric interactions with the axial ligand and also their orientation affects the NMR chemical shifts.
Graphical abstractA new series of cobaloximes with bis(phenylselanyl)glyoxime as the equatorial ligand have been synthesized and characterized. The Co−C bond reactivity in benzyl cobaloximes with molecular oxygen has also been examined. The SePh groups in these complexes adopt either up-down, up-down or down-down, down-down conformations.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Inorganic and organometallic cobaloximes with dioxime containing Se side chain. ► Molecular oxygen insertion in the benzyl complexes under photochemical conditions. ► The SePh groups adopt either up-down, up-down or down-down, down-down conformations. ► X-ray structures of new cobaloximes.
