Alumatrane, Al(OCH2CH2)3N: A Reinvestigation of Its Oligomeric Behavior.

PINKAS, Jiří and J.G. VERKADE. Alumatrane, Al(OCH2CH2)3N: A Reinvestigation of Its Oligomeric Behavior. Inorg. Chem. Spojené státy americké: American Chemical Society, Washington DC, 1993, vol. 32, No 12, p. 2711-2716. ISSN 0020-1669.

Basic information

Original name

Alumatrane, Al(OCH2CH2)3N: A Reinvestigation of Its Oligomeric Behavior.

Authors

PINKAS, Jiří and J.G. VERKADE

Edition

Inorg. Chem. Spojené státy americké, American Chemical Society, Washington DC, 1993, 0020-1669

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Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Science

Keywords in English

ALUMINUM ALKOXIDES; NMR-SPECTROSCOPY

Tags

ALUMINUM ALKOXIDES, NMR-SPECTROSCOPY

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Abstract

V originále

In various literature reports the behavior of the title compound 1 has been described as dimeric in the gas phase; monomeric, hexameric, and octameric in solution; and tetrameric (by X-ray crystallography) in the solid state. Herein we present mass spectral evidence for the presence of both 1(2) and 1(4) in the gas phase. Al-27 NMR evidence is put forth for the tetramer 1(4) as the only detectable oligomer in solution, wherein 1(4) contains one hexacoordinate and three pentacoordinate aluminums. H-1, H-1 DQF COSY experiments confirm the presence Of 1(4) in solution and VT C-13 NMR spectral studies reveal the occurrence of an interesting dynamic behavior of 1(4) in which the three pentacoordinate alumatranes rotate around their pseudo-3-fold axes while remaining fluxionally oxygen-bridged to the central cage containing the hexacoordinated aluminum. Solid-state Al-27 and C-13 NMR and Al-2p, N1a, and O1a XPS evidence has also been gathered that is consistent with the tetrameric structure of solid alumatrane.