Reaktionen und Derivate des Eisencarbonyls.

Metal Complexes of Indigo and of Some Related Ligands

“…was determined. A structure for the “bis‐indigo iron” complex with a monoanionic indigo ligand and monoanionic reduced indigo ligand (indigo white) seems to be consistent with the experimental data, which showed four active hydrogen atoms and gave indigo blue on addition of acids (Scheme ), which was observed also by Hieber and Sonnekalb …”

Further exploration of the reaction between cis‐[Fe(CO)4I2] and alkylamines: An aminium salt of fac‐[Fe(CO)3I3]− or an amine‐bound complex of fac‐[Fe(CO)3I2(NH2R)]?

“…Of the possible complexes, [Fe 2 (CO) 9 ], [Fe 3 (CO) 12 ], and cis-[Fe(CO) 4 X 2 ] (X = Br À , I À ) can serve further as precursors leading to other iron carbonyl complexes. [36] Among these secondary precursors, cis-[Fe(CO) 4 X 2 ], first reported by Hieber and coworkers in 1928, [37] is an extremely useful precursor in preparing other iron carbonyl complexes. It is easy to prepare in that nearly quantitative yield can be achieved in the reaction of [Fe(CO) 5 ] with X 2 at ice temperature.…”

“…It is easy to prepare in that nearly quantitative yield can be achieved in the reaction of [Fe(CO) 5 ] with X 2 at ice temperature. [37] Depending on the ligands employed in the reactions, a wide range of iron carbonyl complexes or clusters could be obtained, [33][34][35]38,39] Scheme 1. In the continual efforts devoted into the mimetic chemistry of [FeFe]-hydrogenase and exploration of iron carbonyl complexes of potentials as CORMs, we have employed this precursor, cis-[Fe(CO) 4 I 2 ], to synthesize both diiron carbonyl and monoiron carbonyl complexes.…”

Metal carbonyl complexes of polycyclic phosphite esters

“…It was Hieber who reported the pyridine adducts of iron carbonyls having the formulas Fe(CO)/,py and Fe(C0)3(py)9 in 1928 (17). In other papers published in the late twenties and early thirties, he and his coworkers, discussed complexes of iron carbonyls formed with orthophenanthroline (18), ethylenediamine (19), and ammonia (20) There are three general methods used for the preparation of metal carbonyl complexes. In the sealed tube method, the metal carbonyl and li^c.r.c are placed in a tube which is evac uated, sealed, and then heated to the desired temperature for a certain length of ti^Sv After cooling, che tube is opened, the evolved carbon monoxide removed, and the products extrac The reaction mixture is then heated or refluxed.…”