Modelling chromium biochemistry: Synthesis and characterization of [NEt3H][Cr4IIIO2(O2CPh)7(pic)2]·CH2Cl2 (Hpic = Picolinic acid)

Polyhedron ◽  
1995 ◽  
Vol 14 (8) ◽  
pp. 971-976 ◽  
Author(s):  
S. Donald ◽  
K. Terrell ◽  
J.B. Vincent ◽  
K.D. Robinson
Keyword(s):  
Picolinic Acid ◽  
Synthesis And Characterization

Oxazoline chemistry. Part VIII. Synthesis and characterization of a new class of pincer ligands derived from the 2-(o-anilinyl)-2-oxazoline skeleton — Applications to the synthesis of group X transition metal catalysts

2005 ◽  
Vol 83 (8) ◽  
pp. 1185-1189 ◽  
Author(s):  
Andreas Decken ◽  
Robert A Gossage ◽  
Paras N Yadav
Keyword(s):  
Heck Reaction ◽  
Picolinic Acid ◽  
Point Group ◽  
Binding Mode ◽  
Transition Metal Catalysts ◽  
Synthesis And Characterization ◽  
Pincer Ligands ◽  
Bond Forming ◽  
Pd Complexes

The synthesis and characterization of a new and readily synthesized class of potentially anionic pincer ligands with C1 point group symmetries is described. These materials can be made via amide coupling of a 2-(2′-anilinyl)-2-oxazoline unit with picolinic acid; the incorporation of enantiopure oxazoline fragments facilitates the construction of chiral C1 pincers. Treatment of the free ligands with Pd metal sources leads to the formation of amido–Pd pincer complexes in good yield. One of these Pd complexes has been characterized by single crystal X-ray diffraction methods, which confirms the proposed tridentate binding mode of the ligand and the formation of an amido N—Pd bond. The metal complexes have been shown to be suitable precusors for catalytically active Pd species that are useful for C—C bond forming reactions, notably the Heck reaction under standard conditions. Key words: oxazoline, 4,5-dihydro-2-oxazole, palladium, pincer ligand, amido, Heck reaction.

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

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