Salcomine

Salcomine

Names
Other names N,N′-Bis(salicylidene)ethylenediaminocobalt(II) Co(salen)
Identifiers
CAS Number	14167-18-1 Y
3D model (JSmol)	Interactive image
ChemSpider	24701 N
ECHA InfoCard	100.034.541
PubChem CID	26517
InChI InChI=1S/C16H16N2O2.Co/c19-15-7-3-1-5-13(15)11-17-9-10-18-12-14-6-2-4-8-16(14)20;/h1-8,11-12,19-20H,9-10H2;/q;+2/p-2/b17-11+,18-12+; N Key: NPAQSKHBTMUERN-OYJDLGDISA-L N
SMILES c1cc(c(cc1)[O-])/C=N/CC/N=C/c2c(cccc2)[O-].[Co+2]
Properties
Chemical formula	C16H14CoN2O2
Molar mass	325.23 g·mol−1
Hazards
Safety data sheet	Oxford MSDS
R-phrases (outdated)	R36/37/38
S-phrases (outdated)	S26 S36
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

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.

The compound features square planar Co(II). It forms a variety of five-coordinate adducts, as is typical for complexes of d⁷ metals. In addition to oxygen and nitrogen donor sites provided by the salen²⁻, the metal typically is bound to pyridine (py) to give the complex Co(salen)(py). Such complexes bind O₂ to give derivatives of the type (μ-O₂)[Co(salen)py]₂ and [Co(salen)py(O₂)].

Salcomine is commercially available. It may be easily synthesized from cobalt(II) acetate and salenH₂:

The 1938 report that this compound reversibly bound O₂ led to intensive research on salen and related ligands for the storage or transport of oxygen. Salcomine catalyzes the oxidation of 2,6-disubstituted phenols by dioxygen.