Academic literature on the topic 'Palladium/platinum compounds'

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Journal articles on the topic "Palladium/platinum compounds"

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Soejima, Takashi, and Kei-ji Iwatsuki. "Innovative Use of Palladium Compounds To Selectively Detect Live Enterobacteriaceae in Milk by PCR." Applied and Environmental Microbiology 82, no. 23 (September 23, 2016): 6930–41. http://dx.doi.org/10.1128/aem.01613-16.

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ABSTRACTEthidium monoazide and propidium monoazide (EMA and PMA) have been used in combination with PCR for more than a decade to facilitate the discrimination of live and dead bacteria (LD discrimination). These methods, however, require many laborious procedures, including the use of a darkroom. Here, we demonstrate an innovative use of palladium compounds involving lower limits of detection and quantification of targeted live cells, fewer laborious procedures, lower costs, and potentially higher-throughput analysis than the use of EMA and PMA. We have also recently reported platinum compounds for LD discrimination, but platinum compounds carry costs that are 3 times higher because of the requirement for much larger amounts for LD discrimination than palladium compounds. Palladium compounds can penetrate dead (compromised) but not live bacteria and can be chelated primarily by chromosomal DNA and cell wall transmembrane proteins, with small amounts of DNA-binding proteinsin vivo. The new mechanism for palladium compounds is obviously different from that of platinum compounds, which primarily target DNA. Combining palladium compounds with PCR (Pd-PCR) in water resulted in discrimination between live and deadEnterobacteriaceaebacteria that was much clearer than that seen with the PMA method. Pd-PCR correlated with reference plating or with the currently used PMA-PCR method for pasteurized milk, based on EN ISO 16140:2003 validation. Pd-PCR enabled us to specifically detect and assay viableEnterobacteriaceaecells at concentrations of 5 to 10 CFU/ml in milk while following U.S./EU regulations after a 4.5-h process in a typical laboratory exposed to natural or electric light, as specified by U.S./EU regulations.IMPORTANCEEthidium monoazide and propidium monoazide (EMA and PMA) facilitate the discrimination of live and dead bacteria (LD discrimination). These methods, however, require many laborious procedures, including the use of a darkroom. Here, we demonstrate an innovative use of palladium compounds involving fewer laborious procedures, lower costs, and potentially higher-throughput analysis than the use of EMA and PMA. We have also recently reported platinum compounds for LD discrimination, but platinum compounds carry costs that are 3 times higher because of the requirement for much larger amounts for LD discrimination than palladium compounds, which have also a novel reaction mechanism different from that of platinum compounds. In view of testing cost, palladium compounds are also very useful here compared with platinum compounds. Ultimately, the innovative Pd-PCR method may be also substituted for the currently used reference plating methods.
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Yoshimura, Akihiro, Shunta Tochigi, and Yasunari Matsuno. "Fundamental Study of Palladium Recycling Using “Dry Aqua Regia” Considering the Recovery from Spent Auto-catalyst." Journal of Sustainable Metallurgy 7, no. 1 (February 16, 2021): 266–76. http://dx.doi.org/10.1007/s40831-020-00335-x.

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AbstractIn this research, a recycling process for palladium using “dry aqua regia,” which consists of iron(III) chloride–potassium chloride, was proposed. Palladium was dissolved in “dry aqua regia,” and the dissolved palladium was recovered by leaching with potassium chloride solution with added ammonium chloride and nitric acid. Palladium was almost completely dissolved in 3 h at 600 K, and the recovery ratio of dissolved palladium was up to 80%. In addition, the dissolution of palladium in coexistence with platinum and the dissolution of platinum-palladium alloy by “dry aqua regia” were also tested. The dissolved palladium and platinum were separated and recovered by solid–liquid separation technique using the difference in solubility of their compounds in potassium chloride and sodium chloride solutions. As a result, pure compounds of each element were recovered. This result suggested the possibility of using “dry aqua regia” for the separation of platinum-group metals. Graphical Abstract
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Freiesleben, Doris, Barbara Wagner, Helmut Hartl, Wolfgang Beck, Michael Hollstein, and Franz Lux. "Notizen: Auflösung von Palladium- und Platinpulver durch biogene Stoffe / Dissolution of Palladium and Platinum Powder by Biogenic Compounds." Zeitschrift für Naturforschung B 48, no. 6 (June 1, 1993): 847–48. http://dx.doi.org/10.1515/znb-1993-0621.

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Palladium and platinum powder dissolve at room temperature in oxygen saturated solutions of α-amino acids, peptides, nucleosides and ATP.The resulting mass concentrations of dissolved palladium and platinum were in the range from 10 to 100 μg/ml.
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Vogels, Christopher M., Heather L. Wellwood, Kumar Biradha, Michael J. Zaworotko, and Stephen A. Westcott. "Reactions of aminoboron compounds with palladium and platinum complexes." Canadian Journal of Chemistry 77, no. 7 (July 1, 1999): 1196–207. http://dx.doi.org/10.1139/v99-106.

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Reactions of 3-NH2C6H4B(OH)2 (1, APBA) with [MCl4]2- (M = Pd, Pt) give the boronic acid-containing complexes, MCl2(APBA)2 (M = Pd, 2; M = Pt, 3). Addition of 1 to [PdCl2(COE)]2 (COE = η2-C8H14) ultimately led to PdCl2(APBA)2 (2). The pinacol derivative PdCl2(APBpin)2 (5, pin = O2C2Me4) was characterized by an X-ray diffraction study. Crystals of 5 were monoclinic, a = 13.836(5), b = 14.937(5), c = 11.287(5) Å, β = 99.042(9)°, Z = 2, with space group P21/c. Monoalkene complexes PtCl2(COE)(APBA) (8) and PtCl2(COE)(APBpin) (9) were generated from the addition of APBA and APBpin, respectively, to [PtCl2(COE)]2. Reactions of 2-NMe2CH2C6H4B(OH)2 (10) with palladium complex [PdCl2(COE)]2 proceed via selective B—C bond cleavage to give the cyclopalladated dimer [PdCl(2-NMe2CH2C6H4)]2 as the major amine-containing product. Likewise, reactions with borinic esters H2NCH2CH2OBR2 (R = Bu, 14; R = Ph, 15) give products derived from cleavage of the B—O bond. The unique palladium complex PdCl2[3-NC5H4B(OH)2]2 (19) was prepared by addition of (3-NC5H4BEt2)4 (18) to [PdCl2(COE)]2 in wet methylene chloride, where adventitious water was used to convert the organoborane product into the corresponding boronic acid moiety.Key words: aminoboronic acids, platinum, palladium, cyclomηllation.
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Acquaye, John Henry K. A., and Mary Frances Richardson. "Palladium and platinum complexes with vitamin B6 compounds." Inorganica Chimica Acta 201, no. 1 (November 1992): 101–7. http://dx.doi.org/10.1016/s0020-1693(00)85009-4.

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Bauer, Rupert, and Christian Königstein. "Sterische Effekte auf die Hydrierstabilität von 1, 1′-Dialkyl-4,4′-bipyridiniumsalzen (Viologenen) in wasserphotolytischen Systemen / Steric Effects on the Hydrogen Stability of 1,1′-Dialkyl-4,4′-bipyridinium Salts (Viologens) in Water Photolytic Systems." Zeitschrift für Naturforschung B 46, no. 11 (November 1, 1991): 1544–48. http://dx.doi.org/10.1515/znb-1991-1115.

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The chemical stability of 1,1′-dialkyl-4,4′-bipyridinium compounds (viologens) as electron relay agents in hydrogen producing water photolytic systems is of great importance for practical applications. Three new 1,1′-dialkyl-4,4′-bipyridinium compounds (1 = 1,1′-dimethyl-2-phenyl-6-(p-tolyl)-4,4′-bipyridiniumdiperchlorate, 2 = 1,1′-dimethyl-2-phenyl-4,4′-bipyridiniumdiperchlorate, 3 = 6-phenyl-1,1′,2-trimethyl-4,4′-bipyridiniumdiperchlorate) have been investigated with respect to their stability and turnover numbers in a classical water photolytic system. H2 was detected during irradiation of solutions using Ru(bipy)3Cl2 as sensitizer, 1-3 as electron relay, EDTA as sacrificial electron donor, and a colloidal catalyst (platinum or palladium) with light λ > 400 nm. Quantum yields (platinum catalyst, light: 400-500 nm) were 18% 1 and 3, 16% 2, compared with methylviologen: 16%. The loss of 1,1′-dialkyl-4,4′-bipyridinium compounds due to hydrogenation was monitored by HPLC. Turnover Numbers (only hydrogen in gas phase was taken into account) were found to be 82 1, 64 2, 57 3 as compared with 39 for methylviologen. Using palladium or palladium supported on BaSO4 instead of platinum as catalysts did not increase the turnover numbers.
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Benn, R., P. Betz, R. Goddard, P. W. Jolly, N. Kokel, C. Krüger, and I. Topalović. "Intermediates in the Palladium-Catalyzed Reaction of 1,3-Dienes, Part 6 [1]." Zeitschrift für Naturforschung B 46, no. 10 (October 1, 1991): 1395–405. http://dx.doi.org/10.1515/znb-1991-1018.

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The structure of the (1,3-butadiene)M(R2PC2H4PR2) compounds (M = Ni, Pd, Pt; R = Pri, Bu′, Cy) in the solid-state have been investigated by 13C and 31P CP/MAS NMR spectroscopy. The bonding mode adopted by the diene is dependent upon the nature of the metal: the palladium compounds contain an η2-diene molecule, the nickel compound where R is cyclohexyl contains an η4-diene molecule whereas the Pr2iPC2H4PPr2i-stabilized platinum compound con- tains a platinacyclopentene ring. The crystal structures of (η2-1,3-C4H6)Pd(Cy2PC2H4PCy2) and (η4-1,3-C4H6)Ni(Cy2PC2H4PCy2) have been confirmed by X-ray diffraction.
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Kubrakova, I. V., O. A. Tyutyunnik, and S. A. Silant’ev. "Mobility of dissolved palladium and platinum species under water-rock interaction in chloride media: modeling of PGE behavior under interaction of oceanic serpentinites with sea water derivates." Геохимия 64, no. 3 (April 3, 2019): 263–72. http://dx.doi.org/10.31857/s0016-7525643263-272.

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To elucidate the possibility of PGE transfer by highly-salt chloride solutions, the palladium and platinum behavior was simulated in the conditions of low-temperature hydrothermal transformation of serpentinites of the oceanic crust. In dynamic water-rock experiments using columns filled with crushed ultrabasic rocks of the ocean floor (harzburgite serpentinites of mid-oceanic ridges with different degrees of carbonatization), it is established that the efficiency of palladium transfer depends on the alteration (carbonatization) degree of peridotites and under the experimental conditions is 80–100%. It is assumed that the transport of palladium occurs as a result of the formation of a strong complex compound with thiosulfate ion, which is an intermediate oxidation product in the “sulphide-sulfate” system. Platinum, hydrolyzed at approximately neutral pH and not forming compounds with thiosulfate ion, is completely retained by serpentinites, possibly due to sorption interactions with silicates. Thus, the higher mobility of palladium during the low- temperature transformation of abyssal peridotites and the dependence of the character of its distribution in the studied rocks on the processes of serpentinization and carbonatization have been confirmed.
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Cossy, Janine. "Efficient cyclization routes to substituted heterocyclic compounds mediated by transition-metal catalysts." Pure and Applied Chemistry 82, no. 7 (May 14, 2010): 1365–73. http://dx.doi.org/10.1351/pac-con-09-09-12.

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Cyclizations induced by transition metals such as palladium, platinum, gold, and ruthenium can produce functionalized heterocycles such as 3-(arylmethylene)isoindolones, γ-lactones, and unsaturated δ-lactones.
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Riera, Xavier, Concepción López, Amparo Caubet, Virtudes Moreno, Xavier Solans, and Mercè Font-Bardia. "Platinum(II) and Palladium(II) Compounds Containing Chiral Thioimines." European Journal of Inorganic Chemistry 2001, no. 8 (August 2001): 2135–41. http://dx.doi.org/10.1002/1099-0682(200108)2001:8<2135::aid-ejic2135>3.0.co;2-2.

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Dissertations / Theses on the topic "Palladium/platinum compounds"

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Burrows, Andrew David. "Cluster compounds of palladium and platinum." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302903.

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Hoogervorst, Wilhelmus Johannes. "Isophthalaldimine compounds of palladium, platinum and rhodium." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/69284.

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Ezomo, O. J. "Studies on palladium and platinum cluster compounds." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234990.

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Chiffey, Andrew Francis. "Bimetallic compounds of palladium, platinum and gold." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294602.

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Kelly, P. F. "Sulphur-nitrogen compounds of platinum and palladium." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46826.

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Tarlton, Stephen Vijay. "Low oxidation state compounds of palladium and platinum." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300855.

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Louw, Marissa. "New platinum and palladium complexes: their anticancer application." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/d1016218.

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Novel non-leaving groups were employed in this dissertation to synthesize platinum complexes which can assist in the understanding or improvement of anticancer action. Emphasis was placed on (NS)-chelate and (NN)-chelate platinum complexes. Bidentate (NS)-donor ligands were used as non-leaving ligands in the synthesis of platinum(II) complexes with iodo, chloro, bromo and oxalato groups as leaving groups. These complexes were synthesized and studied since many questions regarding the interaction of sulfur-donors and platinum still exist. These relate to thermodynamic and kinetic factors and their influence on anticancer action. In this dissertation the properties of novel platinum(II) complexes of a bidentate ligand having an aromatic nitrogen-donor atom in combination with a thioethereal sulfur atom capable of forming a five-membered ring with platinum(II) were studied. The general structure of the (NS)-ligands used was 2-((alkylthio)methyl)pyridine. Alkyl groups used were methyl, ethyl, propyl, benzyl and phenyl. Amine complexes of platinum have been studied extensively in the past. However, attention was given to novel aspects of substituted pyridine and imidazole ligands and their corresponding complexes. Amongst these are 2-(2-methylaminoethyl)pyridine, 1-methyl-2-methylaminoethylimidazole and 1-methyl-2-methylaminobenzylimidazole. The leaving groups included chloro, bromo and oxalato. Mononitroplatinum(IV) complexes were prepared using novel synthetic methods. Selected platinum(II) amine complexes were used as starting materials for this synthesis. Some of these compounds exhibit promising anticancer behaviour. (Trans-(R,R)-1,2-diaminocyclohexane)(oxalato)(mononitrochloro)platinum(IV) is a particularly good anticancer agent and has been patented internationally. All these complexes were characterized using mass spectrometry, chromatography, thermogravimetric analysis, kinetic aspects such as ligand exchange rates and finally their anticancer action against three different cancer cell lines was evaluated via cytotoxicity assays. Some of the compounds exhibited particularly good anticancer potential.
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Hill, Christopher M. "The synthesis of novel cluster compounds of palladium and platinum." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334864.

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曾炳堯 and Biing-chiau Tzeng. "Design, structures, spectroscopic, and photophysical properties of supramoleculsar gold(I), platinum(II), and palladium(II) complexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31237782.

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Tzeng, Biing-chiau. "Design, structures, spectroscopic, and photophysical properties of supramoleculsar gold(I), platinum(II), and palladium(II) complexes /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19471397.

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Books on the topic "Palladium/platinum compounds"

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Organometallic compounds of nickel, palladium, platinum, copper, silver, and gold. London: Chapman and Hall, 1985.

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Cross, R. J., and D. M. P. Mingos. Organometallic Compounds of Nickel, Palladium, Platinum, Copper, Silver and Gold (Chapman and Hall Chemistry Sourcebooks) (Chapman and Hall Chemistry Sourcebooks). Springer, 1998.

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Payne, Emma Kate. The synthesis and characterization of novel platinum and palladium diimene compounds for use as anticancer drugs and CO2 reduction catalyst. 2003.

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Book chapters on the topic "Palladium/platinum compounds"

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Gebel, T. "Toxicology of platinum, palladium, rhodium, and their compounds." In Anthropogenic Platinum-Group Element Emissions, 245–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-59678-0_25.

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Miller, J. S. "Compounds Containing Nickel, Palladium, and Platinum Chains." In Inorganic Reactions and Methods, 101. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145296.ch85.

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Castilho, T. J., M. F. C. Guedes Da Silva, A. J. L. Pombeiro, R. Bertani, M. Mozzon, and R. A. Michelin. "Electrochemical Behaviour of Aminooxy-, Dioxy- and Diaminocarbene Complexes of Palladium(II) and Platinum(II)." In Molecular Electrochemistry of Inorganic, Bioinorganic and Organometallic Compounds, 345–50. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1628-2_31.

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Marder, T. B. "Platinum- or Palladium-catalyzed Diboration of Dienes." In Boron Compounds, 1. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-006-00099.

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"3.5 Transition Metal Compounds and Complexes: 3.5.9 Nickel (Ni), Palladium (Pd), and Platinum (Pt) Compounds." In Synthetic Methods of Organometallic and Inorganic Chemistry, edited by Herrmann and Salzer. Stuttgart: Georg Thieme Verlag, 1996. http://dx.doi.org/10.1055/b-0035-108159.

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BÜch, H. M., and P. Binger. "BISLIGAND METALLACYCLOALKANES BY OXIDATIVE COUPLING OF ACTIVATED ALKENES WITH NICKEL(0), PALLADIUM(0) AND PLATINUM(0) COMPOUNDS." In Organometallic Syntheses, 330–41. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-444-42956-8.50088-8.

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Conference papers on the topic "Palladium/platinum compounds"

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Rúa-Sueiro, Marcos, Paula Munin-Cruz, Francisco Reigosa, José M. Vila, M. Teresa Pereira, and Juan M. Ortigueira. "Synthesis of mono- and dinuclear cyclometallated compounds with palladium and platinum." In The 24th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/ecsoc-24-08299.

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