2017
DOI: 10.1002/slct.201601855
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Ethylzinc‐ and Zinc–bis–fluoroalkoxides

Abstract: We describe synthesis routes from fluorinated ethylzinc alkoxides to ether adducts of fluorinated binary homoleptic zinc alkoxides with fluorinated residues such as ORF (OC(CF3)3), ORHF (OC(H)(CF3)2), ORHT (OC(CH3)(CF3)2), ORAF (perfluoroadamantoxy) and ORCY (OC(CF3)(CF2)5). Their structures depend on the nature of the fluorinated residue: perfluorinated alkoxides ORXF tend to give monomeric ether adducts (ether)2Zn(ORXF)2, while partially fluorinated residues ORYF lead to dimers of type (ether)(YFRO)Zn(μ‐ORYF… Show more

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Cited by 4 publications
(4 citation statements)
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“…Thus, the zinc atoms are located within a trigonal planar coordination environment and furthermore coordinated by two fluorine atoms with Zn⋅⋅⋅F distances of 2.5797(8) and 2.8724(7) Å. It has been described that the nuclearity of zinc alcoholates is determined by the steric demand and the electronic structure of the alcohol as well as the presence or absence of donor molecules [15–17] . A similar dimeric structure to [ZnEt(OC(C 6 F 5 ) 3 )] 2 has been reported for the perfluorinated tert ‐butyl alcoholate [ZnEt(OC(CF 3 ) 3 )] 2 by Krossing and coworkers [15] .…”
Section: Resultsmentioning
confidence: 63%
“…Thus, the zinc atoms are located within a trigonal planar coordination environment and furthermore coordinated by two fluorine atoms with Zn⋅⋅⋅F distances of 2.5797(8) and 2.8724(7) Å. It has been described that the nuclearity of zinc alcoholates is determined by the steric demand and the electronic structure of the alcohol as well as the presence or absence of donor molecules [15–17] . A similar dimeric structure to [ZnEt(OC(C 6 F 5 ) 3 )] 2 has been reported for the perfluorinated tert ‐butyl alcoholate [ZnEt(OC(CF 3 ) 3 )] 2 by Krossing and coworkers [15] .…”
Section: Resultsmentioning
confidence: 63%
“…After filtration, the 19 F NMR spectrum of the supernatant solution shows a number of signals, likely arising from oligomeric zinc fluoroalkoxides. 21 However, if equimolar amounts of the corresponding fluoroalcohol are used, new complexes were formed, whose signals are observed in the 1 H NMR spectra of the reaction mixtures, along with those of the corresponding R–H (toluene from 1-Bn or methane from 1-Me ). For each fluoroalcohol, the NMR spectrum of the main product is the same, independently of the starting material ( 1-Bn or 1-Me ).…”
Section: Resultsmentioning
confidence: 99%
“…Interactions between organically bound fluorine atoms and metal ions across the periodic table have been the subject of intensive scientific interest, which was highlighted in two review articles by Plenio . For instance, metal salts with lithium, sodium, potassium, alkaline earth metals,[4b], vanadium, niobium, molybdenum, tungsten, iron, cobalt, copper, silver,[3a], zinc, tin, thallium,[11b] uranium or europium revealing various metal fluorine contacts are described for complexes derived from (CF 3 ) 3 COH. Furthermore, the combination of sterically demanding fluorinated alcohols with group 13 metals is a recurrent strategy for the design of extraordinarily strong Lewis acids as documented by Krossing's PhF · Al(OC(CF 3 ) 3 ) 3 and Al(O(C 6 F 10 (C 6 F 5 ))) 3 .…”
Section: Introductionmentioning
confidence: 99%