کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1338697 | 979676 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and theoretical analysis of palladium complexes of polydimethylsiloxane functionalised pyridine and their catalytic activity in alcohol oxidations under low polar conditions Synthesis and theoretical analysis of palladium complexes of polydimethylsiloxane functionalised pyridine and their catalytic activity in alcohol oxidations under low polar conditions](/preview/png/1338697.png)
Palladium(II) complexes of polydimethylsiloxane (PDMS)-functionalised pyridine (1), [Pd(OAc)2(1)2] (2) and [PdCl2(1)2] (3), were synthesised and characterised. The cis/trans isomerism of models of complex 3 was investigated using DFT calculations. Models of complex 2 were also theoretically analysed, to identify any possible C–H⋯O interactions. Complex 2 was investigated as a catalyst for selective alcohol oxidations both under solventless conditions and in supercritical carbon dioxide (scCO2). In scCO2 the presence of 1 was found to stabilise the palladium complex, inhibiting its decomposition to Pd(0), a stabilisation not witnessed with non-PDMS functionalised pyridine analogues.
Palladium(II) complexes of polydimethylsiloxane functionalised pyridine showed enhanced solubilities in low polar media, facilitating study of the homogeneous, catalytic oxidation of alcohols by molecular oxygen under solventless conditions and in supercritical carbon dioxide.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 29, Issue 18, 7 December 2010, Pages 3287–3293