Lewis vs. Brønsted-basicities of diiron dithiolates: spectroscopic detection of the “rotated structure” and remarkable effects of ethane- vs. propanedithiolate
- 11 April 2007
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 20,p. 2019-2021
- https://doi.org/10.1039/b700754j
Abstract
The new complexes Fe2(S2CnH2n)(CO)2(dppv)2 (n = 2, 3; dppv = cis-1,2-C2H2(PPh2)2) form adducts with AlBr3 and B(C6F5)3, which adopt the “rotated structure” proposed for the active site of the Fe-only hydrogenases—the propanedithiolate is significantly more Lewis basic due to nonbonded interactions between the dithiolate strap and the ligands on Fe.Keywords
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