Synthesis and characterization of [FeIII(bha)(Hbha)]: Effect of coordinated amide protonation state on the iron(III) centre

1996 ◽  
Vol 108 (3) ◽  
pp. 294-294
Author(s):  
N R Sangeetha ◽  
S Pal
Keyword(s):  
Synthesis And Characterization ◽  
Protonation State

scholarly journals Tuning the Bonding of a μ-Mesityl Ligand on Dicopper(I) through a Proton-Responsive Expanded PNNP Pincer Ligand

2019 ◽  
Author(s):  
Errikos Kounalis ◽  
Martin Lutz ◽  
Daniël Broere
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Crystal Packing ◽  
Nbo Analysis ◽  
Synthesis And Characterization ◽  
Protonation State ◽  
Pincer Ligand ◽  
Crystal Packing Effects ◽  
Packing Effects

<p>We report the synthesis and characterization of a series of cationic, neutral and anionic dicopper(I) complexes featuring a <i>µ</i>-mesityl ligand and a naphthyridine-derived PNNP expanded pincer ligand. Structural characterization showed that the protonation state of the dinucleating ligand has a pronounced effect on the bending and tilting of the <i>µ</i>-mesityl ligand. DFT calculations indicate that the varying orientations of the <i>µ</i>-mesityl ligand are inherent due to changes in electronic structure rather than crystal packing effects. NBO analysis reveals how the interactions that contribute to the 3-center 2-electron bond between the <i>µ</i>-mesityl ligand and the dicopper core change for the various degrees of observed bending and tilting. </p>

scholarly journals Tuning the Bonding of a μ-Mesityl Ligand on Dicopper(I) through a Proton-Responsive Expanded PNNP Pincer Ligand

2019 ◽  
Author(s):  
Errikos Kounalis ◽  
Martin Lutz ◽  
Daniël Broere
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Crystal Packing ◽  
Nbo Analysis ◽  
Synthesis And Characterization ◽  
Protonation State ◽  
Pincer Ligand ◽  
Crystal Packing Effects ◽  
Packing Effects

<p>We report the synthesis and characterization of a series of cationic, neutral and anionic dicopper(I) complexes featuring a <i>µ</i>-mesityl ligand and a naphthyridine-derived PNNP expanded pincer ligand. Structural characterization showed that the protonation state of the dinucleating ligand has a pronounced effect on the bending and tilting of the <i>µ</i>-mesityl ligand. DFT calculations indicate that the varying orientations of the <i>µ</i>-mesityl ligand are inherent due to changes in electronic structure rather than crystal packing effects. NBO analysis reveals how the interactions that contribute to the 3-center 2-electron bond between the <i>µ</i>-mesityl ligand and the dicopper core change for the various degrees of observed bending and tilting. </p>

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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