期刊
ORGANOMETALLICS
卷 34, 期 20, 页码 4959-4964出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.5b00557
关键词
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资金
- Natioinal Science Centre [DEC-2012/04/A/ST5/00595]
- Foundation for polish Science Team Programme
- European Regional Development Fund [TEAM/2011-7/8]
The synthesis and structural characterization of a new series of ethylzinc carboxylates are reported. Structurally diverse complexes were derived from three monofunctional carboxylic acids with different numbers of phenyl groups on the alpha-carbon, and two bifunctional carboxylic acids with a neutral donor terminus, namely, methoxyacetic and diethylphosphonoacetic acids. Donor solvents are commonly used in various transformations of alkylzinc carboxylates; therefore, the effect of THF as a donor solvent on the reaction outcome was also investigated. Reactions of equimolar amounts of Et2Zn and the selected carboxylic acid in THF solutions gave ethylzinc carboxylates with a large variety of structures. In the cases of triphenylacetic and diphenylacetic acids, THF solvated products of stoichiometry [EtZn-(O2CR)(THF)] were isolated as a dimer and a 1D coordination polymer, respectively, whereas, with methoxyacetic acid, a novel solvent-free hexanuclear structural motif with a butterfly-like framework was formed, ([EtZnO2CCH2OCH3](6)). The corresponding reaction with diethylphosphonoacetic acid produced a rare example of a nonanuclear organozinc oxo carboxylate cluster, [(EtZn)(8)Zn(mu(3)-O)(2)(O2CCH2(O)P(OEt)(6))].
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