The First Organoaluminum Derivative of a Hydroxy Carboxylic Acid. Molecular Structure of the Tetranuclear [Et2Al]4[(μ-O2C)C6H4-2-μ-O]2 Adduct

Janusz Lewiński , Janusz Zachara , Iwona Justyniak

Abstract

The reaction of triethylaluminum with salicylic acid in a 2:1 molar ratio results in the formation of the novel tetranuclear diethylaluminum aryloxide carboxylate adduct [Et2Al]4[(?-O2C)C6H4-2-?-O]2 (1). Compound 1 has been characterized by elemental analysis and 1H and 27Al NMR and IR spectroscopy, and its molecular structure has been determined by X-ray crystallography. The molecule is a centrosymmetric cluster with a skeleton framework consisting of three fused heterocycle rings, one 12- and two 6-membered. The two diethylaluminum units symmetrically join the two salicylic acid dianions by the formation of bridges between the aryloxide oxygen atom and one carboxylate oxygen atom of the second ligand. The two other diethylaluminum units are chelated by the aryloxide and second carboxylate oxygen atoms of each ligand. The carboxylate groups display a bidentate coordination mode with syn?anti conformation. The binding mode of the carboxylate and alkoxide ligands to metal centers is also discussed.
Author Janusz Lewiński (FC / DCOC)
Janusz Lewiński,,
- Department Of Catalysis And Organometallic Chemistry
, Janusz Zachara (FC / CICSST)
Janusz Zachara,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Iwona Justyniak
Iwona Justyniak,,
-
Journal seriesOrganometallics, ISSN 0276-7333
Issue year1997
Vol16
No17
Pages3859-3862
ASJC Classification1604 Inorganic Chemistry; 1605 Organic Chemistry; 1606 Physical and Theoretical Chemistry
DOIDOI:10.1021/om970089q
URL http://dx.doi.org/10.1021/om970089q
Languageen angielski
File
organomet1 1997.pdf 134.92 KB
Score (nominal)40
Publication indicators WoS Citations = 30; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 1.226; WoS Impact Factor: 2006 = 3.632 (2) - 2007=3.46 (5)
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