Abstract
The e.s.r. of the known 1:1 molecular oxygen adduct with Co(3-methoxysalen) and a newly discovered, reversible 1:1 oxygen adduct with Co(salen) have been observed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 467-468 |
| Number of pages | 2 |
| Journal | Journal of the Chemical Society D: Chemical Communications |
| Issue number | 8 |
| DOIs | |
| State | Published - 1970 |
Funding
signal in the solid. state at 77"~,the interpretation of which is consistent with its being a super- position of two signals, one due to Co(salen)py(O,), as expected, and a weaker one from Co(salen)py,. The strong resemblance of the e.s.r. spectra of the various 1: 1 oxygen adducts of Co(acacen)B with those of Co(3-niethoxysa1en)B and Co(sa1en)B suggests that all of them have similar structures. On the basis of both i.r.la and e.s.r.lb data, we have assigned the following structure to the Co-0-0 fragment of Co(acacen)R(O,): This geometry for the salen adducts is contrary to the conclusion of Floriani and Calderazzo,le which they drew from i.r. data alone, that Co(3-methoxysalen)py(O,)con-tains a symmetrically disposed oxygen molecule, as in the case of IrXCO(PPh,),O,, where X = C1 or I.* This work was supported by the Advanced Research Projects Agency of the Department of Defense through the Northwestern University Materials Research Center and by the National Institutes of Health.
ASJC Scopus subject areas
- Molecular Medicine