%0 Journal Article %1 Maity.2005 %A Maity, Amarendra Nath %A Schwederski, Brigitte %A Kaim, Wolfgang. %D 2005 %J Inorganic Chemistry Communications %K MLCT band bridged charge complex complex;EPR complex;metal complex;redox complex;tetracyanoethylene coordinated coupling cyclopentadienyl cyclopentadienyliron dicarbonyl hyperfine interaction iron ligand nitrogen potential prepn spectrum tetracyanoethylene tetranuclear transfer %N 7 %P 600--602 %R 10.1016/j.inoche.2005.03.026 %T The redox pair (μ4-TCNE)[Fe(CO)2(C5H5)]44+/3+: Surprisingly small metal-ligand interaction and the first resolved EPR hyperfine structure (13C, 14N, 57Fe) of a tetranuclear complex with TCNE- %V 8 %X Complexation of tetracyanoethylene with dicarbonyl(cyclopentadienyl)iron moiety gave the title tetranuclear complex, [[CpFe(CO)2]4(m4-h1:h1:h1:h1:-TCNE)][BF4]4 (1·[BF4]4; Cp = h5-C5H5) with ligand coordination via its nitrile groups. Electrochem. and absorption spectroscopy (UV/Vis, IR) of the complex 1·[BF4]4 reveal only a small degree of metal-to-ligand p back donation, in contrast to previously characterized compds. [(TCNE)(MLn)4]. Accordingly, the one-electron reduced [(m4-TCNE)[CpFe(CO)2]4]3+ exhibits a very well resolved EPR spectrum at g = 1.9965 with detectable coupling of 0.055 mT for 57Fe in natural abundance from four coordinated [Fe(CO)2(C5H5)]+ groups. [on SciFinder(R)]

@article{Maity.2005, abstract = {Complexation of tetracyanoethylene with dicarbonyl(cyclopentadienyl)iron moiety gave the title tetranuclear complex, [[CpFe(CO)2]4(\textgreek{m}4-\textgreek{h}1:\textgreek{h}1:\textgreek{h}1:\textgreek{h}1:-TCNE)][BF4]4 (1·[BF4]4; Cp = \textgreek{h}5-C5H5) with ligand coordination via its nitrile groups. Electrochem. and absorption spectroscopy (UV/Vis, IR) of the complex 1·[BF4]4 reveal only a small degree of metal-to-ligand \textgreek{p} back donation, in contrast to previously characterized compds. [(TCNE)(MLn)4]. Accordingly, the one-electron reduced [(\textgreek{m}4-TCNE)[CpFe(CO)2]4]3+ exhibits a very well resolved EPR spectrum at g = 1.9965 with detectable coupling of 0.055 mT for 57Fe in natural abundance from four coordinated [Fe(CO)2(C5H5)]+ groups. [on SciFinder(R)]}, added-at = {2019-07-15T13:41:23.000+0200}, author = {Maity, Amarendra Nath and Schwederski, Brigitte and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/222db58ce315068c38f86edfd8ce05c54/b_schwederski}, doi = {10.1016/j.inoche.2005.03.026}, interhash = {132d692434e4e528b48e0f0b2b2a9ff5}, intrahash = {22db58ce315068c38f86edfd8ce05c54}, issn = {1387-7003}, journal = {Inorganic Chemistry Communications}, keywords = {MLCT band bridged charge complex complex;EPR complex;metal complex;redox complex;tetracyanoethylene coordinated coupling cyclopentadienyl cyclopentadienyliron dicarbonyl hyperfine interaction iron ligand nitrogen potential prepn spectrum tetracyanoethylene tetranuclear transfer}, number = 7, pages = {600--602}, timestamp = {2019-07-15T11:42:10.000+0200}, title = {The redox pair {(μ4-TCNE)[Fe(CO)2(C5H5)]4}4+/3+: Surprisingly small metal-ligand interaction and the first resolved EPR hyperfine structure (13C, 14N, 57Fe) of a tetranuclear complex with TCNE-}, volume = 8, year = 2005 }