%0 Journal Article %1 Mondal.2014 %A Mondal, Kartik Chandra %A Roy, Sudipta %A De, Susmita %A Parameswaran, Pattiyil %A Dittrich, Birger %A Ehret, Fabian %A Kaim, Wolfgang %A Roesky, Herbert W. %D 2014 %J Chemistry - A European Journal %K alkylamino carbene cobalt complex;stabilization crystal cyclic mol mononuclear structure %N 37 %P 11646--11649 %R 10.1002/chem.201403525 %T Stabilization of a Two-Coordinate Mononuclear Cobalt(0) Compound %V 20 %X Compd. (Me2-cAAC:)2Co0 (2; Me2-cAAC: = cyclic (alkyl)amino carbene; :C(CH2)(CMe2)2N-2,6-iPr2C6H3) was synthesized by the redn. of the precursor (Me2-cAAC:)2CoICl (1) with KC8 in THF. The cyclic voltammogram of 1 exhibited one-electron redn., which suggests that synthesis of a bent 2-metallaallene (2) from 1 should be possible. Compd. 2 contains one cobalt atom in the formal oxidn. state zero, which is stabilized by two Me2-cAAC: ligands. Bond lengths from x-ray diffraction are 1.871(2) and 1.877(2) \AA with a C-Co-C bond angle of 170.12(8)°. The EPR spectrum of 2 exhibited a broad resonance attributed to the unique quasi-linear structure, which favors near degeneracy and gives rise to very rapid relaxation conditions. The cAAC-Co bond in 2 can be considered as a typical Dewar-Chatt-Duncanson type of bonding, which in turn retains 2.5 electron pairs on the Co atom as nonbonding electrons. on SciFinder(R)

@article{Mondal.2014, abstract = {Compd. (Me2-cAAC:)2Co0 (2; Me2-cAAC: = cyclic (alkyl)amino carbene; :C(CH2)(CMe2)2N-2,6-iPr2C6H3) was synthesized by the redn. of the precursor (Me2-cAAC:)2CoICl (1) with KC8 in THF. The cyclic voltammogram of 1 exhibited one-electron redn., which suggests that synthesis of a bent 2-metallaallene (2) from 1 should be possible. Compd. 2 contains one cobalt atom in the formal oxidn. state zero, which is stabilized by two Me2-cAAC: ligands. Bond lengths from x-ray diffraction are 1.871(2) and 1.877(2) {\AA} with a C-Co-C bond angle of 170.12(8)°. The EPR spectrum of 2 exhibited a broad resonance attributed to the unique quasi-linear structure, which favors near degeneracy and gives rise to very rapid relaxation conditions. The cAAC-Co bond in 2 can be considered as a typical Dewar-Chatt-Duncanson type of bonding, which in turn retains 2.5 electron pairs on the Co atom as nonbonding electrons. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Mondal, Kartik Chandra and Roy, Sudipta and De, Susmita and Parameswaran, Pattiyil and Dittrich, Birger and Ehret, Fabian and Kaim, Wolfgang and Roesky, Herbert W.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2d6a5b0c4090e11bc06b01617fa4f5eb8/huebleriac}, doi = {10.1002/chem.201403525}, interhash = {4412e1e11f071d7bb4451e6b3f63902a}, intrahash = {d6a5b0c4090e11bc06b01617fa4f5eb8}, issn = {0947-6539}, journal = {Chemistry - A European Journal}, keywords = {alkylamino carbene cobalt complex;stabilization crystal cyclic mol mononuclear structure}, number = 37, pages = {11646--11649}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Stabilization of a Two-Coordinate Mononuclear Cobalt(0) Compound}, volume = 20, year = 2014 }