[Fe2(CO)2(μ-hydride)(cis-1,2-bis(diphenylphosphino)ethylene)2(μ-propane-1,3-dithiolate)]B(C6H3(CF3)2)4 在
三乙胺 作用下,
以
not given 为溶剂,
以0%的产率得到[Fe2(CO)2(cis-1,2-bis(diphenylphosphino)ethylene)2(μ-propane-1,3-dithiolate)]
Lewis vs. Brønsted-basicities of diiron dithiolates: spectroscopic detection of the “rotated structure” and remarkable effects of ethane- vs. propanedithiolate
作者:Aaron K. Justice、Giuseppe Zampella、Luca De Gioia、Thomas B. Rauchfuss
DOI:10.1039/b700754j
日期:——
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 ârotated structureâ proposed for the active site of the Fe-only hydrogenasesâthe propanedithiolate is significantly more Lewis basic due to nonbonded interactions between the dithiolate strap and the ligands on Fe.
Terminal Hydride in [FeFe]-Hydrogenase Model Has Lower Potential for H<sub>2</sub> Production Than the Isomeric Bridging Hydride
作者:Bryan E. Barton、Thomas B. Rauchfuss
DOI:10.1021/ic800030y
日期:2008.4.1
Protonation of the symmetrical tetraphosphine complexes Fe2(S2CnH2n)(CO)2(dppv)2 afforded the corresponding terminal hydrides, establishing that even symmetrical diiron(I) dithiolates undergo protonation at terminal sites. The terminal hydride [HFe2(S2C3H6)(CO)2(dppv)2](+) was found to catalyze protonreduction at potentials 200 mV milder than the isomeric bridging hydride, thereby establishing a thermodynamic