Carbon monoxide substitutions by trimethyl phosphite in diiron dithiolate complex: Fe-Fe bond cleavage, selectivity of the substitutions, crystal structures and electrochemical studies
The reaction of substitution of carbon monoxide by P(OMe)3 in the complex (μ-η2PhC(S) = C(S)Ph)Fe2(CO)61 under thermal activation afforded two colored compounds: a binuclear disubstituted complex (μ-PhC(S) = C(S)Ph)Fe2(CO)4 [P(OMe)3]22 and a mononuclear iron disubstituted complex (η2PhC(S) = C(S)Ph)...
Gespeichert in:
Veröffentlicht in: | Journal of organometallic chemistry 2018-07, Vol.866, p.35-42 |
---|---|
Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The reaction of substitution of carbon monoxide by P(OMe)3 in the complex (μ-η2PhC(S) = C(S)Ph)Fe2(CO)61 under thermal activation afforded two colored compounds: a binuclear disubstituted complex (μ-PhC(S) = C(S)Ph)Fe2(CO)4 [P(OMe)3]22 and a mononuclear iron disubstituted complex (η2PhC(S) = C(S)Ph)Fe(CO)[P(OMe)3]23. Mass spectrometry, 1H NMR, IR and electrochemical studies established that two (CO) have been substituted by P(OMe)3 in complexes 2 and 3. The X-ray studies show that the two P(OMe)3 ligands are in apical positions in trans of the iron – iron bound of complex 2 and in equatorial positions in complex 3. However, the substitution reaction of (CO) by P(OMe)3 in complex 1 under electron transfer catalysis (ETC) led to the monosubstituted compound (μ-PhC(S) = C(S)Ph)Fe2(CO)5 [P(OMe)3] 4.
[Display omitted]
•Carbonyl exchange by P(OMe)3 in (μ-η2PhC(S) = C(S)Ph)Fe2(CO)6 lead to three complexes.•Thermal activation lead to a binuclear and a mononuclear iron disubstituted complexes.•Under electron transfer catalysis a binuclear monosubstituted complex was obtained.•Complexes volammetry showed a chemical two electrons reversible reduction step.•When P(OMe)3 was added CO substitutions were induced by electron transfer catalysis. |
---|---|
ISSN: | 0022-328X 1872-8561 0022-328X |
DOI: | 10.1016/j.jorganchem.2018.04.005 |