Transfer of Amide and 2-Methoxyethoxy Groups and Sodium Encapsulation in the Reaction of TaCl3[N(TMS)2]2 with Sodium Bis(2-methoxyethoxy)aluminum Hydride: X-ray Structure of [NaAl{N(TMS)2}(OCH2CH2OMe)3]2 |
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| Authors: | Shih-Huang Huang Xiaoping Wang Michael G. Richmond |
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| Affiliation: | (1) Department of Chemistry, University of North Texas, Denton, TX 76203, USA;(2) Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6460, USA |
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| Abstract: | ![]()
Abstract The reaction between the tantalum compound TaCl3[N(TMS)2]2 and the hydridic reducing agent sodium bis(2-methoxyethoxy)aluminum hydride (Vitride) has been investigated in toluene solution at room temperature and found to afford the dimeric aluminate complex [NaAl{N(TMS)2}(OCH2CH2OMe)3]2 as the sole isolable product. The molecular structure of the product establishes the existence of a four-coordinate aluminum atom and the formal transfer of the 2-methoxyethoxy and bis(trimethylsilyl)amide groups to the aluminate product. The aggregation of two NaAl{N(TMS)2}(OCH2CH2OMe)3 units serves to bind the two sodium cations in a crown-ether fashion through six ancillary oxygen atoms. Index Abstract The reaction between TaCl3[N(TMS)2]2 and the reducing agent Vitride has been examined and found to furnish the dimeric aluminate complex [NaAl{N(TMS)2}(OCH2CH2OMe)3]2 in low yields. X-ray diffraction analysis confirms the attendant transfer of the 2-methoxyethoxy and bis(trimethylsilyl)amide groups to the aluminate product, which exists as a dimer that encapsulates two sodium counter ions via the 2-methoxyethoxy appendages.  |
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| Keywords: | Aluminate Amide transfer Crown ether Sodium encapsulation Crystal structure |
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