Reaction of a 2,4,6-triphenylphosphinine ferrate anion with electrophiles: a new route to phosphacyclohexadienyl complexes

Hoidn, Christian M. and Wolf, Robert (2016) Reaction of a 2,4,6-triphenylphosphinine ferrate anion with electrophiles: a new route to phosphacyclohexadienyl complexes. DALTON TRANSACTIONS, 45 (21). pp. 8875-8884. ISSN 1477-9226, 1477-9234

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Abstract

A novel, versatile route to phosphorus-and carbon-substituted eta(5)-phosphacyclohexadienyl complexes was developed. Reaction of the anionic 2,4,6-triphenylphosphinine iron complex [K([18]crown-6)(thf)(2)][(CpFe)-Fe-star(PC5Ph3H2)] (1) with selected main group element electrophiles afforded the new complexes [(CpFe)-Fe-star(2-endo-H-PC5Ph3H2)] (endo-3), [(CpFe)-Fe-star(2-exo-H-PC5Ph3H2)] (exo-3), [(CpFe)-Fe-star(1-Me-PC5Ph3H2)] (4), [(CpFe)-Fe-star(1-Me3Si-PC5Ph3H2)] (5), [(CpFe)-Fe-star(1-PPh2-PC5Ph3H2)] (6) and [(CpFe)-Fe-star(2-BCat-PC5Ph3H2)] (7, BCat = 2-benzo[d][1,3,2]dioxaborol-2-yl). Initial attack of the electrophile at phosphorus was observed, leading to a P-substitued phosphinine ligand. A subsequent rearragement occured in some cases, resulting in C-substituted phosphinine complexes endo-3, exo-3 and 7. The new complexes were characterized by H-1, P-31{H-1}, and C-13{H-1} NMR spectroscopy, UV-vis spectroscopy and elemental analysis; their molecular structures were determined by X-ray crystallography.

Item Type: Article
Uncontrolled Keywords: X-RAY CRYSTAL; SPS-BASED RHODIUM(I); BOND COVALENT RADII; DFT CALCULATIONS; CORRELATION-ENERGY; IRON COMPLEXES; BASIS-SETS; DENSITY; EXCHANGE; LIGAND;
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie
Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Robert Wolf
Depositing User: Dr. Gernot Deinzer
Date Deposited: 18 Mar 2019 13:17
Last Modified: 18 Mar 2019 13:17
URI: https://pred.uni-regensburg.de/id/eprint/2689

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