Chemistry:Salcomine
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| C16H14CoN2O2 | |
| Molar mass | 325.233 g·mol−1 |
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| Safety data sheet | Oxford MSDS |
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| GHS Signal word | Warning |
| H315, H319, H335 | |
| PP261Script error: No such module "Preview warning".Category:GHS errors, PP264Script error: No such module "Preview warning".Category:GHS errors, PP271Script error: No such module "Preview warning".Category:GHS errors, PP280Script error: No such module "Preview warning".Category:GHS errors, PP304 + P340 + P312Script error: No such module "Preview warning".Category:GHS errors, PP332 + P313Script error: No such module "Preview warning".Category:GHS errors, PP337 + P313Script error: No such module "Preview warning".Category:GHS errors, PP362 + P364Script error: No such module "Preview warning".Category:GHS errors, PP403 + P233Script error: No such module "Preview warning".Category:GHS errors, PP501Script error: No such module "Preview warning".Category:GHS errors | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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Salcomine is a coordination complex derived from the salen ligand and cobalt. The complex, which is planar, and a variety of its derivatives are carriers for O2 as well as oxidation catalysts.[3]
Preparation and structure
Salcomine is commercially available. It may be synthesized from cobalt(II) acetate and salenH2.[4]
Salcomine crystallizes as a dimer. In this form, the cobalt centers achieve five-coordination via a bridging phenolate ligands.[5] A monomeric form crystallizes with chloroform in the lattice. It features planar Co centers.[6] Salcomine is both a Lewis acid and a reductant. Several solvated derivatives bind O2 to give derivatives of the type (μ-O2)[Co(salen)py]2 and [Co(salen)py(O2)].[3]
Applications
The 1938 report that this compound reversibly bound O2[8] led to intensive research on this and related complexes for the storage or transport of oxygen. Solvated derivatives of salcomine, e.g. the chloroformate or the DMF adduct, bind 0.5 equivalent of O2:
- 2 Co(salen) + O2 → [Co(salen)]2O2
Salcomine catalyzes the oxidation of 2,6-disubstituted phenols by dioxygen.[9]
References
- ↑ N,N′-Bis(salicylidene)ethylenediaminocobalt(II) at Sigma-Aldrich
- ↑ "SAFETY DATA SHEET". 27 November 2021. https://www.sigmaaldrich.com/AU/en/sds/aldrich/274712.
- ↑ 3.0 3.1 Shoichiro Yamada "Advancement in stereochemical aspects of Schiff base metal complexes" Coordination Chemistry Reviews 1999, volume 190–192, 537–555.
- ↑ Appleton, T. G. (1977). "Oxygen Uptake by a Cobalt(II) Complex". J. Chem. Educ. 54 (7): 443. doi:10.1021/ed054p443.
- ↑ Bruckner, S.; Calligaris, M.; Nardin, G.; Randaccio, L. (1969). "The Crystal Structure of the Form of N,N-Ethylenebis(salicylaldehydeiminato)cobalt(II) Inactive Towards Oxygenation". Acta Crystallographica Section B 25 (8): 1671–1674. doi:10.1107/S0567740869004523.
- ↑ Schaefer, W. P.; Marsh, R. E. (1969). "Oxygen-Carrying Cobalt Compounds. I. Bis(salicylaldehyde)ethylenediiminecobalt(II) Monochloroformate". Acta Crystallographica Section B 25 (9): 1675–1682. doi:10.1107/S0567740869004547.
- ↑ M. Calligaris; G. Nardin; L. Randaccio; A. Ripamonti (1970). "Structural Aspects of the Synthetic Oxygen-Carrier NN′-Ethylenebis(Salicylideneiminato)cobalt(II): Structure of the Addition Compound with Oxygen Containing Dimethylformamide". J. Chem. Soc. A: 1069. doi:10.1039/j19700001069.
- ↑ Tokuichi Tsumaki (1938). "Nebenvalenzringverbindungen. IV. Über einige innerkomplexe Kobaltsalze der Oxyaldimine". Bulletin of the Chemical Society of Japan 13 (2): 252–260. doi:10.1246/bcsj.13.252.
- ↑ C. R. H. I. De Jonge; H. J. Hageman; G. Hoentjen; W. J. Mijs (1988). "Oxidation with Bis(Salicylidene)ethylenediiminocobalt(II) (Salcomine): 2,6-Di-''tert''-butyl-''p''-benzoquinone". Organic Syntheses. http://www.orgsyn.org/demo.aspx?prep=cv6p0412.; Collective Volume, 6, pp. 412
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