%0 Journal Article %1 Hosmane.1993 %A Hosmane, Narayan S. %A Wang, Ying %A Zhang, Hongming %A Maguire, John A. %A Waldhoer, Eberhard %A Kaim, Wolfgang. %D 1993 %J Organometallics %K carborane cobalt crystal diamine diamine;TMEDA half sandwich structure structure;mol %N 10 %P 3785--3787 %R 10.1021/om00034a001 %T Synthesis and crystal structure of a novel, TMEDA-stabilized closo-cobalt(II) carborane: An intermediate for anionic, commo-cobalt(III) carborane complexes %V 12 %X The reaction of closo-exo-5,6-[(m-H)2Li(TMEDA)]-1-Li(TMEDA)-2,4-(SiMe3)2-2,4-C2B4H4 with CoCl2 in a molar ratio of 1:1 in a solvent mixt. of dry benzene and n-hexane at 0° and then at room temp. produces, in 92\% yield, deep green crystals of a paramagnetic, half-sandwich Co(II) carborane, closo-1-(TMEDA)-1-Co-2,4-(SiMe3)2-2,4-C2B4H4 (I), which does not undergo disproportionation to give the corresponding Co(III) species and elemental cobalt. Unlike the cases of main-group metallacarboranes, the coordination of the metal in I with the Lewis base TMEDA does not produce a distortion of the metallacarborane. Thus, I exhibits an almost undistorted \dqcarbons apart\dq pentagonal-bipyramidal geometry, which was confirmed by a single-crystal x-ray diffraction study. [on SciFinder(R)]

@article{Hosmane.1993, abstract = {The reaction of closo-exo-5,6-[(\textgreek{m}-H)2Li(TMEDA)]-1-Li(TMEDA)-2,4-(SiMe3)2-2,4-C2B4H4 with CoCl2 in a molar ratio of 1:1 in a solvent mixt. of dry benzene and n-hexane at 0° and then at room temp. produces, in 92{\%} yield, deep green crystals of a paramagnetic, half-sandwich Co(II) carborane, closo-1-(TMEDA)-1-Co-2,4-(SiMe3)2-2,4-C2B4H4 (I), which does not undergo disproportionation to give the corresponding Co(III) species and elemental cobalt. Unlike the cases of main-group metallacarboranes, the coordination of the metal in I with the Lewis base TMEDA does not produce a distortion of the metallacarborane. Thus, I exhibits an almost undistorted {\dq}carbons apart{\dq} pentagonal-bipyramidal geometry, which was confirmed by a single-crystal x-ray diffraction study. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Hosmane, Narayan S. and Wang, Ying and Zhang, Hongming and Maguire, John A. and Waldhoer, Eberhard and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/262e28c290cf2ae9956f6885f6a16ee6c/huebleriac}, doi = {10.1021/om00034a001}, interhash = {337f65ac04e170a147a40c27e5545d76}, intrahash = {62e28c290cf2ae9956f6885f6a16ee6c}, issn = {0276-7333}, journal = {Organometallics}, keywords = {carborane cobalt crystal diamine diamine;TMEDA half sandwich structure structure;mol}, number = 10, pages = {3785--3787}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Synthesis and crystal structure of a novel, TMEDA-stabilized closo-cobalt(II) carborane: An intermediate for anionic, commo-cobalt(III) carborane complexes}, volume = 12, year = 1993 }