Beiträge zur systematischen Verwandtschaftslehre. 70. Über das Vereinigungsvermögen von Palladium und Phosphor

Wiehage, Gerda; Weibke, Friedrich; Blitz, Wilhelm; Meisel, Karl; Wiechmann, Friedel

doi:10.1002/zaac.19362280406

Cited by 22 publications

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“…The diffraction pattern analysis of sample 1 after heating showed the following reflections on the diffraction curve, d/n, A (I/I 0 ): 4.004(46) (not identified), 3.340(15) (Pd 5 P 2 ), 2.998(31) (not identified), 2.930(65) (PdP 2 ), 2.878(94) (PdP 2 ), 2.722(100) (Pd 5 P 2 , PdP 2 ), 2.515(29) (Pd 5 P 2 , PdP 2 ), 2.448(15) (Pd 5 P 2 ), 2.284(32) (Pd 5 P 2 ), 2.122(31) (Pd 5 P 2 ), 2.111(37) (Pd 5 P 2 ), 2.080(38) (Pd 5 P 2 ), 2.052 (38) (PdP 2 ), 2.002(35) (PdP 2 ), 1.982(15) (Pd 5 P 2 ), 1.900 (23) (PdP 2 ), 1.838(33) (Pd 5 P 2 ), 1.795(31), 1.735(23) (Pd 5 P 2 ), 1.689(20) (PdP 2 ), 1.489(15) (not identified), 1.470(25) (Pd 5 P 2 , PdP 2 ) 1.367(15) (Pd 5 P 2 ), 1.349(11) (Pd 5 P 2 ), 1.308(11) (Pd 5 P 2 ). The reflections were assigned according to the known X-ray characteristics of PdP 2 [10] and Pd 5 P 2 (PDF 19-887) [25].…”

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confidence: 99%

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Formation of palladium phosphides in the reaction of bis(dibenzylideneacetone)palladium(0) with white phosphorus

et al. 2012

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The reaction of bis(dibenzylideneacetone)palladium(0) with white phosphorus was studied using the methods of NMR, UV spectroscopy, and X-ray powder diffraction. The products of the reaction are shown to be palladium phosphides, their composition depending on the ratio of the reagents. The mechanism of the formation of the palladium-enriched phosphides is suggested, which includes the formation of palladium diphosphide PdP 2 that subsequently reacts with the excess of bis(dibenzylideneacetone)palladium(0) leading to palladium phosphides Pd 5 P 2 , Pd 3 P 0.8 , Pd 4.8 P, and free dibenzylideneacetone.increase the turnover number and turnover frequency in hydrogenation of alkenes almost by the order of magnitude [7,8]. The main reason of the promoting effect of white phosphorus on the catalytic properties of the system Pd(acac) 2 -Р 4 -Н 2 is the increase in the dispersity and stability of the formed nanoparticles [8]. The modifying effect of elemental phosphorus on the catalytic properties of palladium catalysts depends on a number of factors: the nature of the acidoligand in the precursor, reducer, concentration and the ratio of the reagents [9]. We believe that one of the reasons of the effect of the nature of the acidoligand on the properties of nanosized palladium catalysts modified with elemental phosphorus is the difference in the rates of reduction of Pd(II) to Pd(0), subsequent reaction of Pd(0) with elemental phosphorus, and clusterization of Pd(0). For the active in hydrogenation palladium catalysts modified with elemental phosphorus the following model was suggested: the core of the nanoparticle consists of palladium phosphides, mainly Pd 6 P, and its surface, of the active in the hydrogenation Pd(0) clusters.It is known that palladium phosphides can be obtained by various methods: the high temperature synthesis from the elements [10], thermal decomposition of organometallic precursors, in particular, phosphine complexes formed in situ from the metal salt and

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confidence: 99%

“…It is known that palladium phosphides can be obtained by various methods: the high temperature synthesis from the elements [10], thermal decomposition of organometallic precursors, in particular, phosphine complexes formed in situ from the metal salt and DOI: 10.1134/S1070363212020077…”

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Formation of palladium phosphides in the reaction of bis(dibenzylideneacetone)palladium(0) with white phosphorus

et al. 2012

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Beiträge zur systematischen Verwandtschaftslehre. 71. Über die Bildungswärmen im System Kupfer‐Zink

Weibke

1937

Z. Anorg. Allg. Chem.

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Beiträge zur systematischen Verwandtschaftslehre. 78. Über die Phosphide des Nickels

Blitz¹,

Heimbrecht²

1938

Z. Anorg. Allg. Chem.

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Beiträge zur systematischen Verwandtschaftslehre. 70. Über das Vereinigungsvermögen von Palladium und Phosphor

Cited by 22 publications

References 5 publications

Formation of palladium phosphides in the reaction of bis(dibenzylideneacetone)palladium(0) with white phosphorus

Formation of palladium phosphides in the reaction of bis(dibenzylideneacetone)palladium(0) with white phosphorus

Beiträge zur systematischen Verwandtschaftslehre. 71. Über die Bildungswärmen im System Kupfer‐Zink

Beiträge zur systematischen Verwandtschaftslehre. 78. Über die Phosphide des Nickels

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