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

PINKAS, Jiří a J.G. VERKADE. Alumatrane, Al(OCH2CH2)3N: A Reinvestigation of Its Oligomeric Behavior. Inorg. Chem. Spojené státy americké: American Chemical Society, Washington DC, 1993, roč. 32, č. 12, s. 2711-2716. ISSN 0020-1669.

Základní údaje

Originální název

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

Autoři

PINKAS, Jiří a J.G. VERKADE

Vydání

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

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Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

ALUMINUM ALKOXIDES; NMR-SPECTROSCOPY

Štítky

ALUMINUM ALKOXIDES, NMR-SPECTROSCOPY

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Anotace

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.