Use of 1,10-phenanthroline in diiron dithiolate derivatives related to the [Fe–Fe] hydrogenase active site

Abstract

International audienceTreatment of [Fe2(µ-pdt)(CO)6] (pdt = S(CH2)3S) with 1,10-phenanthroline (phen) in refluxing toluene affords the asymmetric complex [Fe2(µ-pdt)(CO)4(phen)] (1); the protonation of 1 with HBF4·OEt2 in CD2Cl2 at 203 K has been monitored by 1H NMR

Reactions of Selected Aromatic Thioketones with Dodecarbonyltriiron

“…The Fe-Fe distances in these complexes are found to be in the range of 2.495-2.521 Å, which are slightly shorter than the corresponding bond in the hydrogenase model complexes. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] The Fe-S bond lengths are found to be within the same range observed for the hydrogenase model complexes. [10][11][12][13][14][15][16][17][18][24][25][26] The C-S average bond length (1.83 Å) is within the same range for a C-S single bond (1.80-1.85 Å) [40] and is significantly longer than the corresponding bond of Fe(PMe 3 ) 3 (Me)(κ,S,C-Ph 2 C=S) [1.675(4) Å] [38] , which contains a C=S bond.…”

Phosphane‐ and Phosphite‐Substituted Diiron Diselenolato Complexes as Models for [FeFe]‐Hydrogenases

“…The newly synthesized complexes 2-6 were fully characterized by IR, 1 H NMR, 13 2 ] and diamines were also investigated. [31][32][33][34][35][36] Recently, the preparation and characterization of diiron models containing diselenolato ligands have been reported (Scheme 1b). [37][38][39][40] The ability of these complexes to act as models for the [FeFe]-hydrogenases has also been investigated.…”

Non-innocent bma ligand in a dissymetrically disubstituted diiron dithiolate related to the active site of the [FeFe] hydrogenases

“…During the last few years, diiron complexes with bidentate ligands, such as diphosphine [16][17][18][19][20], phenanthroline [21,22] or carbene [23][24][25] were synthesized and their effect on the bimetallic site was appraised. Numerous functionalities with specific electronic and steric effects could be introduced in diiron systems through these chelating groups [26,27].…”