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Abstract

The results of studying palladium-carbon (Pd-C) nanocomposites using Raman spectroscopy are presented. This method has been used for studying samples having various palladium content, prepared by a one-step Physical Vapour Deposition (PVD) process and a Chemical Vapour Deposition (two-step PVD/CVD) process using different process parameters. For samples obtained by PVD, the vibration bands characteristic of C60 fullerene molecules were observed in the spectra, whereas for layers obtained by PVD/CVD, the Raman spectra displayed mainly D and G bands characteristic solely of the prescence of graphite-like layers’ vibrations. The analysis of the obtained Raman spectra reveals that its shape is affected by many parameters including type of substrate, temperature, and the percentage content of Pd in the studied layer. The quantitative analysis of spectra for layers obtained using the PVD/CVD process shows a difference in the relative intensity of bands D and G, reflecting the different degrees of amorphisation in the investigated nanocomposites.

Abstract

Xenbucin 1, an analgesic drug, was synthesized in 4 steps using two different routes. The biaryl fragment could successfully be produced via a Pd/C catalysed Suzuki coupling in water using sodium tetraphenylborate as a phenylation reagent. Overall yields of the routes were 36% and 59%, respectively.

Abstract

Atomic force microscopy (AFM) topographical studies and results of nanoindentation experiment for several palladium-carbon films (Pd-C film) deposited on various substrates and with varying palladium content are presented. Pd-C films were prepared by a physical vapor decomposition (PVD) process and next were modified by a chemical vapor decomposition (CVD) method to obtain carbonaceous porous structure with dispersed palladium nanograins and a variation in roughness.

The dependence of film topography on the kind of substrate such as Al2O3, Mo polycrystalline foil and fused silica was studied by AFM. Nanomechanical properties such as hardness and the reduced indentation modulus were determined by nanoindentation. A comparison of these values for films with different Pd content deposited on various substrates is presented.

Crystal structure / Phosphinoligand / Thioformamide / Palladium Complex j Pd(II) compound Abstract. The crystal structure of c«-[Pd{(c-CöHii)2- PC(S) = N(C6H5)}2] has been determined at room tem- perature. The yellow crystals are monoclinic, space group C2/c with unit cell dimensions a = 19.601 (2) Â, b = 8.2633(8) Â, c = 23.627(1) Â, 0 = 94.218(6)°, Z = 4, C38H54N2P2PdS2 and Dx = 1.342 Mgm"3. The struc- ture was solved by direct methods and refined by a full-matrix least-squares procedure to final R = 0.040 using 2331 reflections. The molecule is disposed about a

Metallkomplexe mit biologisch wichtigen Liganden, CIV [1]. or/Zio-Palladierte Komplexe von N,N-DimethyI-C-phenyl-glycinmethylester. Synthese von a-Aminosäure-Derivaten durch Insertion von Isocyaniden, CO, Alkenen und Alkinen in die Pd-C-Bindung Metal Complexes of Biologically Important Ligands, CIV [ 1]. o/t/20-Palladated Complexes of N,N-Dimethyl-C-phenylglycine-methylester. Synthesis of ct-Amino Acid Derivatives by Insertion of Isocyanides, CO, Alkenes, and Alkynes into the Pd-C Bond Andreas Böhm, Kurt Polborn**, Karlheinz Sünkel**, Wolfgang Beck

924 Notizen N O T I Z E N AlkinylVerbindungen von Übergangsmetallen, X X X X I [1] Planare Komplexe des Typs trans-[Pd(C=CC6H4C=CH) 2(Pet3) 2] Alkynyl Compounds of Transition Metals, X X X X I [1] Planar Complexes of the Type to5-[Pd(feCC6H4C=CH)2(Pet3)2] Reinhard Nast* und Axel Beyer Institut für Anorganische und Angewandte Chemie der Universität Hamburg, Martin-Luther-King-Platz 6, D-2000 Hamburg 13 Z. Naturforsch. 35 b, 924-925 (1980); eingegangen am 28. Februar 1980 <rcms - Bis (1,2-ethynylphenylethynyl)- bis (tri ethy lphosphine )palladium

Crystal structure of diammonium bis(oxalato)palladium(II) dihydrate, (NH4)2[Pd(C2O4)2] · 2H2O Qing-Song YeI, Zai-Fu PanII, Ming-Jin XieIII, Jia-Lin Chen*,I, Wei-Ping LiuI and Wen-Zheng XiaI I State Key Lab of Advanced Technologies for Platinum Metals, Kunming Institute of Precious Metal, Kunming 650106, P. R. China II Sino-Platinum Corporation, Kunming 650106, P. R. China III Yunnan University, Department of Chemistry, Kunming 650031, P. R. China Received June 24, 2010, accepted and available on-line July 24, 2010; CSD no. 710047 Abstract C4H12N2O10Pd, monoclinic

Crystal structure of (pyridine-2-aldoxime-N,N%)palladium(II) chloride, [Pd(C12H11ClN4O2)]Cl Ali A. Torabi*,I, Ali SoudoziI and RichardWelterII I Zanjan University, Chemistry Department, Km. 5, Tabriz Road, P.O. Box 45195-313, Zanjan, Iran II Universite Louis Pasteur, Laboratoire DECMET, UMR CNRS 7513, Strasbourg, France ReceivedMarch 2, 2007, accepted and available on-line September 11, 2007; CCDC no. 1267/1996 Abstract C12H11ClN4O2Pd, monoclinic, C12/c1 (no. 15), a = 14.0520(5) Å, b = 12.1500(4) Å, c = 16.5700(7) Å, 1 = 114.371(2)°, V = 2577.0 Å3, Z = 8, Rgt

Crystal structure of cis-bis(N,N-dimethyl-N-4-chlorobenzoyl- thioureato)palladium(II), Pd(C10H10ClN2OS)2 H. Arslan*I,II, D. VanderveerI, F. EmenII and N. KülcüII I Georgia Institute of Technology, School of Chemistry and Biochemistry, 770 State Street Atlanta, Georgia, 30332-0400 USA II Mersin University, Faculty of Arts and Sciences, Department of Chemistry, 33343 Mersin, Turkey Received July 16, 2003, accepted and available on-line September 10, 2003; CCDC-No. 1267/1120 Abstract C20H20Cl2N4O2PdS2, monoclinic, P121/c1 (No. 14), a = 12.323(4) Å, b = 8.629(3) Å, c

Crystal structure of dichloro(3-methylthio-2-methylpropyl)diphenyl- phosphine-palladium(II) — dichloromethane (1:1), Pd(C17H21PS)Cl2 · CH2Cl2 E. M. Al-ShamiI, A. S. Abu-SurrahII, M. Klinga*,III, M. AhlgrenIV and H. A. HodaliI I University of Jordan, Department of Chemistry, Amman, 11942, Jordan II Hashemite University, Department of Chemistry, PO Box 150459, Zarqa, 13115, Jordan III University of Helsinki, Laboratory of Inorganic Chemistry, Department of Chemistry, PO Box 55, FIN-00014 Helsinki, Finland IV University of Joensuu, Department of Chemistry, PO Box