801319-17-5Relevant academic research and scientific papers
On the reaction of [(CO)3Fe(μ-Me2NCO) 2Fe(CO)2(NHME2)] with chelating ligands - X-ray structures of new binuclear μ-carbamoyl complexes
Petz, Wolfgang,Neumueller, Bernhard,Pudewills, Jens
, p. 869 - 875 (2008/10/09)
Reaction of the binuclear μ-carbamoyl complex [(CO)3Fe(μ- Me2NCO)2Fe(CO)2(HNMe2)] (1) in toluene with the chelating ligands Ph2PCH2PPh2 (dppm) and Ph2PCH2CH2PPh2 (dppe) gives different results. With dppm only the complex [(CO)3Fe(μ- Me2NCO)2Fe(CO)2(dppm)] (3) with a dangling ligand is obtained under replacement of amine, whereas with dppe depending on the reaction conditions up to three compounds are found. A 1:1 mixture of the educts generates the related complex [(CO)3Fe(μ-Me 2NCO)2Fe(CO)2(dppe)] (4) together with the tetranuclear complex [{(CO)3Fe(μ-Me2NCO) 2Fe(CO)2}2(dppe)] (5). 4 slowly converts into [(CO)3Fe(μ-Me2NCO)2Fe(CO)(dppe)] (6) with dppe acting as a chelating ligand. 6 is the first compound in this series in which one of the five CO groups is replaced by another donor. A 2:1 molar ratio of 1 and dppe quantitatively produces 5. Addition of CO to a solution of 6 proceeds under slow reversible conversion of the complex into 4. The compounds were characterized by the usual spectroscopic methods; 3, 5, and 6 were also studied by X-ray diffraction analyses.
