Pd complexes containing non-symmetrical diphosphines in the terpolymerization of ethene, propene and carbon monoxide

2007 ◽  
Vol 265 (1-2) ◽  
pp. 98-108 ◽  
Author(s):  
Antonella Leone ◽  
Sebastian Gischig ◽  
Giambattista Consiglio
Keyword(s):  
2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Maria Maganu ◽  
Filip Chiraleu ◽  
Constantin Draghici ◽  
Gheorghe Mihai

The previous data obtained by 1H-NMR spectroscopy established the existence of an asymmetry of the bond between Pd and p-allylic groups, even in the p-allyl-Pd complexes dimers which are considered usually symmetric dimers. The asymmetry of the bond depends by the substitutes of the allylic group. Other analytical methods were investigated for additional proof of the obtained results. Thus, this paper discusses how this asymmetry would be reflected in the infrared spectra and in the reaction of the complexes with carbon monoxide.


2001 ◽  
Vol 79 (5-6) ◽  
pp. 593-597
Author(s):  
Kyoko Nozaki ◽  
Fumitoshi Shibahara ◽  
Stephan Elzner ◽  
Tamejiro Hiyama

Alternating copolymerization of fluorinated olefins (CnF2n+ 1)(CH2)mCH=CH2 (1) and carbon monoxide was carried out using cationic Pd(II)-(R,S)-BINAPHOS complexes (2) as catalysts. To obtain polymeric products sufficiently, existence of at least two methylenes in 1 were essential (m [Formula: see text] 2). The products thus obtained formed polyspiroketal (4) rather than polyketone (3), the structures being determined by solid- and solution-state NMR and IR analyses. The water contact angle was 108° for a sample of 4f when it was casted on a glass surface from C6F6 solution.Key words: copolymer, fluoroalkene, carbon monoxide, palladium, contact angle.


2000 ◽  
Vol 12 (4) ◽  
pp. 354-357
Author(s):  
David R Smart ◽  
Paul D Mark

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