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A Molecular Complex with a Formally Neutral Iron-germanide Motif (Fe2Ge2)
Title: | A Molecular Complex with a Formally Neutral Iron-germanide Motif (Fe2Ge2) |
Authors: | Rzepa, HS Scheschkewitz, D Huch, V Jana, A |
Item Type: | Dataset |
Abstract: | We report the synthesis and isolation of a stable complex containing the formally neutral Fe2Ge2 motif, which is stabilized by the coordination of an N-heterocyclic carbene to the germanium and carbon monoxide to the iron center. [(NHCiPr2Me2)GeFe(CO)4]2 is obtained by reduction of the NHCiPr2Me2-coordinated dichlorogermylene adduct with Fe(CO)4, which in turn is obtained from reaction of Fe2(CO)9 with GeCl2·NHCiPr2Me2 (NHCiPr2Me2 = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene). The solid state structure of the title compound reveals two distinct coordination modes for the Fe(CO)4 fragments: bridging (p-type) and terminal (s-type). In solution, the rapid equilibrium between the two modes was resolved by NMR at −35°C. Reaction with propylene sulfide at room-temperature affords the sulfide-bridged digermanium complex with two terminal Fe(CO)4 moieties. We report the synthesis and isolation of a stable complex containing the formally neutral Fe2Ge2 motif, which is stabilized by the coordination of an N-heterocyclic carbene to the germanium and carbon monoxide to the iron center. [(NHCiPr2Me2)GeFe(CO)4]2 is obtained by reduction of the NHCiPr2Me2-coordinated dichlorogermylene adduct with Fe(CO)4, which in turn is obtained from reaction of Fe2(CO)9 with GeCl2·NHCiPr2Me2 (NHCiPr2Me2 = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene). The solid state structure of the title compound reveals two distinct coordination modes for the Fe(CO)4 fragments: bridging (p-type) and terminal (s-type). In solution, the rapid equilibrium between the two modes was resolved by NMR at −35°C. Reaction with propylene sulfide at room-temperature affords the sulfide-bridged digermanium complex with two terminal Fe(CO)4 moieties. We report the synthesis and isolation of a stable complex containing the formally neutral Fe2Ge2 motif, which is stabilized by the coordination of an N-heterocyclic carbene to the germanium and carbon monoxide to the iron center. [(NHCiPr2Me2)GeFe(CO)4]2 is obtained by reduction of the NHCiPr2Me2-coordinated dichlorogermylene adduct with Fe(CO)4, which in turn is obtained from reaction of Fe2(CO)9 with GeCl2·NHCiPr2Me2 (NHCiPr2Me2 = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene). The solid state structure of the title compound reveals two distinct coordination modes for the Fe(CO)4 fragments: bridging (p-type) and terminal (s-type). In solution, the rapid equilibrium between the two modes was resolved by NMR at −35°C. Reaction with propylene sulfide at room-temperature affords the sulfide-bridged digermanium complex with two terminal Fe(CO)4 moieties. |
Issue Date: | 16-Oct-2014 |
URI: | http://hdl.handle.net/10044/1/30293 |
DOI: | http://dx.doi.org/10.6084/m9.figshare.1206310 |
Keywords: | Iron germanide Computational Chemistry Inorganic Chemistry |
Appears in Collections: | Faculty of Natural Sciences - Research Data |