Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides

Bensiek S, Bangel M, Neumann B, Stammler H-G, Jutzi P (2000)
ORGANOMETALLICS 19(7): 1292-1298.

Journal Article | Published | English

No fulltext has been uploaded

Author
; ; ; ;
Abstract
The (N,N-dialkylaminoethyl)cyclopentadienyl group 13 element dichlorides 3 and 4 of the type [(R2NCH2CH2)C5H4]MCl2 {M = Al, R = Me (3); M = Ga, R = i-Pr (4)} were prepared via salt elimination reactions of [(R2NCH2CH2)C5H4]K {R = Me (1), i-Pr (2)} with the respective group 13 element trichlorides. The reaction of 3 with LiAlH4 afforded the cyclopentadienylaluminum dihydride [(Me2NCH2CH2)C5H4]AlH2 (5) in nearly quantitative yield. Treatment of the organogallium dichlorides [(R2NCH2CH2)C5H4]GaCl2 {R = i-Pr (4), Me (6)} with LiAlH4 led via transmetalation to the organoaluminum dihydrides [(R2NCH2-CH2)C5H4]AlH2 {R =Me (5), i-Pr (7)} in good yields. The reaction of 6 with LiGaH4 resulted in the formation of the organogallium dihydride [(Me2NCH2CH2)C5H4]GaH2 (8). The novel compounds 3-5, 7, and 8 were characterized by elemental analysis, NMR spectroscopy, mass spectrometry, and X-ray crystallography. In the solid state and also in solution, all compounds feature a monomeric structure with an intramolecularly coordinated dialkylamino group. The coordinative and electronic saturation of the metal center in these compounds leads to a drastically decreased reactivity toward moisture and air in comparison to nondonor-stabilized Cp-group 13 element compounds. The dynamic behavior observed in solution is based on fast haptotropic shifts in a "windshield-wiper" type process. Sufficient volatility makes the organodihydrido compounds 5 and 8 suitable precursors for the deposition of aluminum and gallium, respectively, in the MOCVD process. Ex-situ characterization with sputter auger electron spectroscopy (SAES) provides information about the chemical composition of the aluminum and gallium layers. Irradiation of 5 and 8 in solution is followed by decomposition into the respective metal and into the hydrogen-functionalized ligand [C5H5(CH2CH2NMe2)].
Publishing Year
ISSN
eISSN
PUB-ID

Cite this

Bensiek S, Bangel M, Neumann B, Stammler H-G, Jutzi P. Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides. ORGANOMETALLICS. 2000;19(7):1292-1298.
Bensiek, S., Bangel, M., Neumann, B., Stammler, H. - G., & Jutzi, P. (2000). Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides. ORGANOMETALLICS, 19(7), 1292-1298.
Bensiek, S., Bangel, M., Neumann, B., Stammler, H. - G., and Jutzi, P. (2000). Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides. ORGANOMETALLICS 19, 1292-1298.
Bensiek, S., et al., 2000. Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides. ORGANOMETALLICS, 19(7), p 1292-1298.
S. Bensiek, et al., “Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides”, ORGANOMETALLICS, vol. 19, 2000, pp. 1292-1298.
Bensiek, S., Bangel, M., Neumann, B., Stammler, H.-G., Jutzi, P.: Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides. ORGANOMETALLICS. 19, 1292-1298 (2000).
Bensiek, S, Bangel, M, Neumann, B, Stammler, Hans-Georg, and Jutzi, Peter. “Synthesis, structure, and significance for MOCVD of intramolecularly base-stabilized monomeric cyclopentadienylaluminum and -gallium dihydrides”. ORGANOMETALLICS 19.7 (2000): 1292-1298.
This data publication is cited in the following publications:
This publication cites the following data publications:

Export

0 Marked Publications

Open Data PUB

Web of Science

View record in Web of Science®

Search this title in

Google Scholar