Chelating tris(carbene) ligands employed by the Meyer Group
We have discovered that employing tripodal N-heterocyclic carbene chelates developed by us, allows for the synthesis, isolation as well as the structural and spectroscopic characterization of discrete mid- and high valent imido, nitride, and peroxo complexes.
With these ligands we successfully prepared and fully characterized a series of high- and mid-valent manganese, cobalt and iron nitrido complexes. The X-ray structure of the iron(IV) nitrido complex is the first structural verification of the [FeN] synthon that has been recognized as the reactive intermediate in the industrial Haber–Bosch process. Reactivity studies of the Fe(V) species include the reaction of an FeVºN with water to yield ammonia in near quantitative yields.
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An Iron Nitride Complex
Angew. Chem. Int. Ed. 2008, 47, 2681–2684. get it here, get science editor's choice here, get the "german chemical news" here
Synthesis, Structure, and Reactivity of an Iron(V) Nitride
Science 2011, 331, 10491052. get it here, get RCS highlight here, get C&E News highlight here, get GDCh highlight here, NatChem news & views
Manganese Nitride Complexes in Oxidation States III, IV, and V: Synthesis and Electronic Structure
J. Am. Chem. Soc. 2012, 134, 1553815544. get it here
An Intermediate Cobalt(IV) Nitrido Complex and its N-Migratory Insertion Product
J. Am. Chem. Soc. 2014, 136, 1507215078. get it here