Assessing the influence of phosphine substituents on the catalytic properties of self-stabilised digold(I) complexes with supporting ferrocene phosphinonitrile ligands

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10396149" target="_blank" >RIV/00216208:11310/19:10396149 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=HuNNgEpaaW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=HuNNgEpaaW</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c9nj02555c" target="_blank" >10.1039/c9nj02555c</a>

Result language
angličtina
Original language name
Assessing the influence of phosphine substituents on the catalytic properties of self-stabilised digold(I) complexes with supporting ferrocene phosphinonitrile ligands
Original language description
Gold(i) phosphine complexes are often used in catalysis, but the role of their auxiliary ligands still remains poorly understood. Thus, building on our previous research, we prepared a series of Au(I) complexes [Au-2(mu-R(2)PfcCN)(2)][SbF6](2) (fc = ferrocene-1,1'-diyl) to assess the effect of phosphine groups PR2 on the catalytic properties of these highly catalytically active, dimeric compounds. Catalytic testing in Au-mediated cyclisation of N-propargyl amides to 2-substituted 5-methyleneoxazolines showed that weaker donating phosphines gave rise to more active, albeit partly destabilised, catalysts. Nevertheless, thanks to their self-stabilisation by reversible nitrile coordination, [Au-2(mu-R(2)PfcCN)(2)](+) cations readily converted into catalytically active species (by dissociation) and, in addition, remained catalytically active even at very low metal loadings. The experimental results were supported by the trends in (1)J(PSe) coupling constants for R2P(Se)fcCN as a measure of ligand basicity, and by DFT calculations.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/GA17-02495S" target="_blank" >GA17-02495S: Coordination behaviour and synthetic transformations of phosphinoferrocene isonitriles and alkynes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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