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Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions

Alexander Nikolaevich Selikhov 1, 2
Alexander Nikolaevich Selikhov
, 
Anton Vladimirovich Cherkasov 2
Anton Vladimirovich Cherkasov
,  , 
Aleksandr Anatol'evich Trifonov 1, 2
Aleksandr Anatol'evich Trifonov
10.1016/j.mencom.2021.04.017
Published 2021-04-28
Communication , Volume 31, Issue 3, 334-336
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Selikhov A. N. et al. Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions // Mendeleev Communications. 2021. Vol. 31. No. 3. pp. 334-336.
GOST all authors (up to 50) Copy
Selikhov A. N., Cherkasov A. V., Nelyubina Y. V., Trifonov A. A. Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions // Mendeleev Communications. 2021. Vol. 31. No. 3. pp. 334-336.
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TY - JOUR
DO - 10.1016/j.mencom.2021.04.017
UR - https://mendcomm.colab.ws/publications/10.1016/j.mencom.2021.04.017
TI - Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions
T2 - Mendeleev Communications
AU - Selikhov, Alexander Nikolaevich
AU - Cherkasov, Anton Vladimirovich
AU - Nelyubina, Yulia Vladimirovna
AU - Trifonov, Aleksandr Anatol'evich
PY - 2021
DA - 2021/04/28
PB - Mendeleev Communications
SP - 334-336
IS - 3
VL - 31
ER -
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@article{2021_Selikhov,
author = {Alexander Nikolaevich Selikhov and Anton Vladimirovich Cherkasov and Yulia Vladimirovna Nelyubina and Aleksandr Anatol'evich Trifonov},
title = {Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions},
journal = {Mendeleev Communications},
year = {2021},
volume = {31},
publisher = {Mendeleev Communications},
month = {Apr},
url = {https://mendcomm.colab.ws/publications/10.1016/j.mencom.2021.04.017},
number = {3},
pages = {334--336},
doi = {10.1016/j.mencom.2021.04.017}
}
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Selikhov, Alexander Nikolaevich, et al. “Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions.” Mendeleev Communications, vol. 31, no. 3, Apr. 2021, pp. 334-336. https://mendcomm.colab.ws/publications/10.1016/j.mencom.2021.04.017.

Keywords

agostic interactions
alkaline earth metals
alkyl ligands
calcium complexes
CH bond activation
rare-earth metals
ytterbium complexes

Abstract

The reaction between potassium derivative {[(4-ButC6H4)2CH]−K+}n and alkyl iodides gives new 1,1-bis(4-tert-butylphenyl)alkanes which can be deprotonated with BunNa to produce species [(4-ButC6H4)2CR]−Na+ (R=Me, Bui). The salt metathesis of the latter with base-free CaI2 or YbI2 affords novel bis(hydrocarbyl) complexes [(4-ButC6H4)2CR]2M(TMEDA) (M=Ca, R=Me; M=Yb, R=Bui). The hyperconjugation of the central carbanion with alkyl groups pronouncedly enhances the basic properties of the compounds which would perform CH bond activation in toluene and thiophene, in distinction to the related ‘nonalkylated’ analogues with (4-ButC6H4)2CH− ligand.

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