%0 Journal Article %1 Gross.1987 %A Gross, Renate %A Kaim, Wolfgang. %D 1987 %J Journal of Organometallic Chemistry %K ambivalence complex complex;electrochem coordination cyanopyridine methylcyclopentadienyl methylcyclopentadienylmanganese redox terephthalonitrile terephthalonitrile;manganese terephthalonitrile;methylcyclopentadienylmanganese %N 3 %P 347--365 %T Coordination ambivalence and electron structure of mono- and binuclear methylcyclopentadienylmanganese dicarbonyl complexes of cyanopyridine and terephthalodinitrile %V 333 %X Ambident cyanopyridine ligands form N(pyridine) and N'(nitrile) coordinated mono- and binuclear complexes with the (C5H4Me)(CO)2Mn (C5H5 = cyclopentadienyl) fragment. All 3 possible forms for 4-cyanopyridine were isolated, whereas mononuclear compds. were obtained as most stable species in N1-coordinated form with 3-cyanopyridine and in CN2-coordinated form with the 2-isomer. IR, NMR, and UV/VIS spectroscopy as well as electrochem. and ESR spectroscopy of the anion radicals demonstrate superior p back-bonding via the pyridine N centers; the isolation of nitrile coordinated complexes is attributed to the kinetic stability of the CN-Mn bond. A neutral binuclear complex was isolated with the stronger p-acceptor, tetrafluoroterephthalonitrile. [on SciFinder(R)]

@article{Gross.1987, abstract = {Ambident cyanopyridine ligands form N(pyridine) and N'(nitrile) coordinated mono- and binuclear complexes with the (C5H4Me)(CO)2Mn (C5H5 = cyclopentadienyl) fragment. All 3 possible forms for 4-cyanopyridine were isolated, whereas mononuclear compds. were obtained as most stable species in N1-coordinated form with 3-cyanopyridine and in CN2-coordinated form with the 2-isomer. IR, NMR, and UV/VIS spectroscopy as well as electrochem. and ESR spectroscopy of the anion radicals demonstrate superior \textgreek{p} back-bonding via the pyridine N centers; the isolation of nitrile coordinated complexes is attributed to the kinetic stability of the CN-Mn bond. A neutral binuclear complex was isolated with the stronger \textgreek{p}-acceptor, tetrafluoroterephthalonitrile. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Gross, Renate and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/28d6f100e00f2c2f9c83d1095119bdd7d/huebleriac}, interhash = {b79858c8dfaea611240f39f1a3dd06a3}, intrahash = {8d6f100e00f2c2f9c83d1095119bdd7d}, journal = {Journal of Organometallic Chemistry}, keywords = {ambivalence complex complex;electrochem coordination cyanopyridine methylcyclopentadienyl methylcyclopentadienylmanganese redox terephthalonitrile terephthalonitrile;manganese terephthalonitrile;methylcyclopentadienylmanganese}, number = 3, pages = {347--365}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Coordination ambivalence and electron structure of mono- and binuclear methylcyclopentadienylmanganese dicarbonyl complexes of cyanopyridine and terephthalodinitrile}, volume = 333, year = 1987 }