2002
DOI: 10.1023/a:1020236910932
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Cited by 3 publications
(8 citation statements)
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“…The appearance of the nanoparticles also did not change when the aqueous solvent was replaced by an organic medium (heptane, benzene, toluene, mesitylene). However, when the entrapped palladium acetate (1) was replaced by sol-gel entrapped Z-bis(-prolinato)palladium(II) (2), [6] Z-bis(-tyrosinato)palladium(II) (3), [7] or Z-bis(-alaninato)palladium(II) (4), [8] the catalyst did not form nanoparticles in detectable amounts during their entrapment within the ceramic matrix or during the coupling process (see Experimental Section). Unlike the reactions by Pd(OAc) 2 that could be performed in an aqueous medium under microemulsion/sol-gel transport (EST) conditions, [4] the coupling by the palladium derivatives of the amino acids had to be conducted in benzene (or in other hydrocarbons), because the immobilized palladium compounds leach readily into water.…”
Section: Resultsmentioning
confidence: 99%
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“…The appearance of the nanoparticles also did not change when the aqueous solvent was replaced by an organic medium (heptane, benzene, toluene, mesitylene). However, when the entrapped palladium acetate (1) was replaced by sol-gel entrapped Z-bis(-prolinato)palladium(II) (2), [6] Z-bis(-tyrosinato)palladium(II) (3), [7] or Z-bis(-alaninato)palladium(II) (4), [8] the catalyst did not form nanoparticles in detectable amounts during their entrapment within the ceramic matrix or during the coupling process (see Experimental Section). Unlike the reactions by Pd(OAc) 2 that could be performed in an aqueous medium under microemulsion/sol-gel transport (EST) conditions, [4] the coupling by the palladium derivatives of the amino acids had to be conducted in benzene (or in other hydrocarbons), because the immobilized palladium compounds leach readily into water.…”
Section: Resultsmentioning
confidence: 99%
“…Data analysis was performed with Vision processing data reduction software (Kratos Analytical Ltd.) and CasaXPS (Casa Software Ltd.). [4] 4-chloro-1,1Ј-biphenyl, [4] Z-bis(-prolinato)palladium, [6] Z-bis(-tyrosinato)palladium, [7] and Z-(-alaninato)palladium [8] were prepared according to literature procedures.…”
Section: Generalmentioning
confidence: 99%
“…The simplest regularities governing the reduction of inert Pd(II) complexes not complicated by the process of hydrogen evolution were established with DME in solutions containing low concentrations of complexes (on the order of 10 -5 M) [20,21,24,26,27,29,30]. The use of such concentrations of Pd(II) and not-too-low concentrations of supporting electrolytes ( ≥ 0.01 M) made it possible to obtain waves for reduction of Pd(II) complexes that were not distorted by a polarographic maximum, which is usually observed at higher concentrations of Pd(II).…”
Section: Electroreduction Of Pd(ii) Complexes Without Preceding Chemimentioning
confidence: 99%
“…As was assumed in [19], the specific adsorption of the and Cl anions hindered the stretching of the bonds between Pd(II) and the glycinate ion, which precedes the electron transport towards specifically adsorbed complexes, which hinders the cathodic process of their reduction. The and Cl anions exert a similar hindering effect on the process of reduction of chelate complexes Pd(ala) 2 [22] and Pd(ida [23], where alais the anion of α-alanine and ida 2is the anion of iminodiacetic acid. Waves corresponding to the reduction of the Pd(ala) 2 and Pd(ida complexes were observed at positive charges of the surface of DME.…”
Section: Electroreduction Of the Glycinate Alaninate And Other Compmentioning
confidence: 99%
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