Gd13Fe10C13: indications of Fe-Fe multiple bonding emerging from chemical frustration.
We report the synthesis and crystal structure of the carbide Gd(13)Fe(10)C(13). This compound adopts a new structure type that is remarkable for its "H"-shaped C(2)FeFeC(2) units, which have some of the shortest Fe-Fe contacts known. A bonding analysis using DFT-calibrated Hückel calculations hints that Fe-Fe multiple bonding underlies these short distances. Gd(13)Fe(10)C(13) undergoes ferromagnetic ordering at ∼55 K.
Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA.
Amelia B
AB
Hadler
Daniel C
DC
Fredrickson