%0 Journal Article %1 Li.2017 %A Li, Bin %A Kundu, Subrata %A Stueckl, A. Claudia %A Zhu, Hongping %A Keil, Helena %A Herbst-Irmer, Regine %A Stalke, Dietmar %A Schwederski, Brigitte %A Kaim, Wolfgang %A Andrada, Diego M. %A Frenking, Gernot %A Roesky, Herbert W. %D 2017 %J Angewandte Chemie, International Edition %K ESR aluminum coordination crystallog neutral radical sphere stable %N 1 %P 397--400 %R 10.1002/anie.201609101 %T A Stable Neutral Radical in the Coordination Sphere of Aluminum %V 56 %X The neutral radical (Me2-cAAC)2AlCl2 (2) is stabilized by cyclic (alkyl)(amino)carbenes (cAACs). Complex 2 was synthesized by redn. of the Me2-cAAC:$\rightarrow$AlCl3 (1) adduct with KC8 in the presence of another equiv. of Me2-cAAC. The crystal structure of 2 shows that the Al-C bond lengths of the two carbenes bound to the Al center are considerably different, which is likely the result of intermol. interactions. Quantum-chem. calcns. from the gas phase give an equil. structure with identical Al-C bond lengths. Compd. 2 exhibits monoradical character, which was confirmed by EPR measurements. A bonding anal. indicates that the unpaired electron resides mainly at the carbene carbon atoms. Compd. 2 is an example for an unusual neutral Al radical. [on SciFinder(R)]

@article{Li.2017, abstract = {The neutral radical (Me2-cAAC)2AlCl2 (2) is stabilized by cyclic (alkyl)(amino)carbenes (cAACs). Complex 2 was synthesized by redn. of the Me2-cAAC:$\rightarrow$AlCl3 (1) adduct with KC8 in the presence of another equiv. of Me2-cAAC. The crystal structure of 2 shows that the Al-C bond lengths of the two carbenes bound to the Al center are considerably different, which is likely the result of intermol. interactions. Quantum-chem. calcns. from the gas phase give an equil. structure with identical Al-C bond lengths. Compd. 2 exhibits monoradical character, which was confirmed by EPR measurements. A bonding anal. indicates that the unpaired electron resides mainly at the carbene carbon atoms. Compd. 2 is an example for an unusual neutral Al radical. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Li, Bin and Kundu, Subrata and Stueckl, A. Claudia and Zhu, Hongping and Keil, Helena and Herbst-Irmer, Regine and Stalke, Dietmar and Schwederski, Brigitte and Kaim, Wolfgang and Andrada, Diego M. and Frenking, Gernot and Roesky, Herbert W.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/233a97ea54c33b07454ceaa6bb41c4946/huebleriac}, doi = {10.1002/anie.201609101}, interhash = {84ffa8e2f3d3f81f14fca5ee9df1c32e}, intrahash = {33a97ea54c33b07454ceaa6bb41c4946}, issn = {1433-7851}, journal = {Angewandte Chemie, International Edition}, keywords = {ESR aluminum coordination crystallog neutral radical sphere stable}, number = 1, pages = {397--400}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {A Stable Neutral Radical in the Coordination Sphere of Aluminum}, volume = 56, year = 2017 }