Change search
ReferencesLink to record
Permanent link

Direct link
CO-migration in the ligand substitution process of the chelating diphosphite diiron complex (mu-pdt) Fe(CO)(3) Fe(CO){(EtO)(2)PN(Me)P(OEt}(2)
Show others and affiliations
2008 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 47, no 15, 6948-6955 p.Article in journal (Refereed) Published
Abstract [en]

Selective synthetic routes to isomeric diiron dithiolate complexes containing the (EtO)(2)PN(Me)P(OEt)(2) (PNP) ligand in an unsymmetrical chelating role, for example, (mu-pdt)[Fe(CO)(3)][Fe(CO)(kappa(2)-PNP)] (3) and as a symmetrically bridging ligand in (mu-pdt)(mu-PNP)[Fe(CO)(2)](2) (4), have been developed. 3 was converted to 4 in 75% yield after extensive reflux in toluene. The reactions of 3 with PMe3 and P(OEt)(3) afforded bis-monodentate P-donor complexes (mu-pdt)[Fe(CO)(2)PR3][Fe(CO)(2)(PNP)] (PR3 = PMe3 5; P(OEt)(3), 7), respectively, which are formed via an associative PMe3 coordination reaction followed by an intramolecular CO-migration process from the Fe(CO)3 to the Fe(CO)(PNP) unit with concomitant opening of the Fe-PNP chelate ring. The PNP-monodentate complexes 5 and 7 were converted to a trisubstituted diiron complex (mu-pdt)(mu-PNP)[Fe(CO)PR3][Fe(CO)(2)] (PR3 = PMe3, 6; P(OEt)(3), 8) on release of 1 equiv CO when refluxing in toluene. Variable-temperature P-31 NMR spectra show that trisubstituted diiron complexes each exist as two configuration isomers in solution. All diiron dithiolate complexes obtained were characterized by MS, IR, NMR spectroscopy, elemental analysis, and X-ray diffraction studies.

Place, publisher, year, edition, pages
2008. Vol. 47, no 15, 6948-6955 p.
URN: urn:nbn:se:kth:diva-17730DOI: 10.1021/ic800525nISI: 000257991000045ScopusID: 2-s2.0-49649099746OAI: diva2:335775
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Sun, Licheng
By organisation
Organic Chemistry
In the same journal
Inorganic Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 22 hits
ReferencesLink to record
Permanent link

Direct link