The molecular structure of the complex trimethylaluminium dimethyl ether, (CH3)3AlO(CH3)2, determined by gas phase electron diffraction期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The molecular structure of the complex trimethylaluminium dimethyl ether, (CH₃)₃AlO(CH₃)₂, determined by gas phase electron diffraction

Authors:	Arne Haaland Svein Samdal Oddvar Stokkeland Johann Weidlein

Affiliation:	Department of Chemistry, The University of Oslo, Blindern, Oslo 3 Norway;Fachbereich Chemie der Universität Stuttgart, D-7000 Stuttgart 80, Pfaffenwaldring 55 West-Germany

Abstract:	The molecular structure of (CH₃)₃AlO(CH₃)₂ has been determined by gas phase electron diffraction. The main molecular parameters are AlC = 1.973(11), AlO = 2.014(14), OC = 1.436(3) Å, OAlC = 98.7(1.5), AlOC = 122.6 (0.5) and COC = 114.5(1.7)°. The OC bond distance and the COC valence angle are significantly larger than those in free dimethyl ether. The three valencies of the oxygen atom appear to lie in one plane. It is suggested that the planarity of the oxygen atom is due to across-angle repulsion Al?C(O).

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