Intramolecular formation and cleavage of C–S/N bonds promoted by iron-sulfur coordination chemistry

Synthesis and characterisation of three diiron tetracarbonyl complexes related to the diiron centre of [FeFe]-hydrogenase and their protonating, electrochemical investigations

“…Detailed procedures were described earlier elsewhere. 60 Digital simulation was performed by using DigiElch software. In the simulation, general criteria as described earlier were observed.…”

The reactions of pyridinyl thioesters with triiron dodecacarbonyl: their novel diiron carbonyl complexes and mechanistic investigations

“…Oxidative reaction of triiron dodecacarbonyl, Fe 3 (CO) 12 , with thiols could involve cleavage/formation of C-C and/or C-X (X = S, N) bonds to produce unexpected diiron complexes depending on the nature of the thiols employed. [29][30][31] In the reaction of Fe 2 (CO) 9 with thioesters, 19,22 the formation of diiron complexes involving acyl binding were achieved via unstable monoiron intermediate. Therefore, it is feasible to speculate that the reaction of Fe 3 (CO) 12 with ligands L 1 and L 2 would adopt a similar pathway.…”

“…This is because not only has the triiron carbonyl cluster been a precursor widely employed in the preparation of diiron carbonyl complexes as models of the diiron subunit of the [FeFe]hydrogenase, but also its reaction often initiates cleavage/formation C-S(N) bonds which may lead to novel complexes/clusters. 29,31 Herein, we report the synthesis of two thioester ligands, PyCH 2 SCOCH 3 (L 1 ) and PyCH 2 SCOPy (L 2 ), their reactions with Fe 3 (CO) 12 5), were produced, of which complexes 3 and 4 are structural isomers with subtle differences in the coordination of the pyridin-2-yl group to the diiron centre. Under the aid of decarboxylating agent (Me 3 NO), complex 5 was irreversibly converted into complex 4 but no complex 3 was observed.…”

Oxygen, sulfur, selenium, tellurium and polonium

“…120 The complex [Fe 2 (edt)(CO) 6 ] was unexpectedly isolated from reaction of 2,2 0 -pyridin-2-ylmethylazaendiyl) diethanthiol with Fe 3 (CO) 12 . 121 Reversible binding of one mole of CO per Fe has been achieved by the di-iron complex 35 with the CO removed from 36 in vacuo. 122 The luminescence and electrochemical properties of a family of dimeric Pt(II) complexes with functionalised-terpyridylligands in which the Pt centres are bridged by dianionic S-donor ligands have been examined.…”