Effect of Early Transition-Metal (M=Ti, V and Cr) Doping on the Electronic Structure of Charge-Transfer Type Compound NiS Studied by Thermoelectric Power and X-Ray Photoemission Measurements

1994 ◽  
Vol 63 (4) ◽  
pp. 1429-1440 ◽  
Author(s):  
Masanori Matoba ◽  
Shuichiro Anzai ◽  
Atsushi Fujimori
Keyword(s):  
Electronic Structure ◽  
Charge Transfer ◽  
Transition Metal ◽  
Thermoelectric Power ◽  
X Ray ◽  
Early Transition Metal ◽  
Type Compound ◽  
Cr Doping ◽  
Early Transition

scholarly journals Radial X‐Ray Diffraction Study of Superhard Early Transition Metal Dodecaborides under High Pressure

2019 ◽  
Vol 29 (22) ◽  
pp. 1900293 ◽  
Author(s):  
Jialin Lei ◽  
Georgiy Akopov ◽  
Michael T. Yeung ◽  
Jinyuan Yan ◽  
Richard B. Kaner ◽  
...  
Keyword(s):  
High Pressure ◽  
Transition Metal ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Early Transition Metal ◽  
Early Transition

scholarly journals Ti Catalyzed Hydroamination: A Direct Functionalization of Cu Acetylide

2019 ◽  
Author(s):  
Han Hao ◽  
Laurel Schafer
Keyword(s):  
Nmr Spectroscopy ◽  
Transition Metal ◽  
Single Crystal ◽  
Mechanistic Studies ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Early Transition Metal ◽  
Direct Functionalization ◽  
Metal Catalyzed ◽  
Early Transition

In the presence of a bis-amidate-bis-amido Ti pre-catalyst, an NHC supported Cu acetylide was reacted with <i>p</i>-toluidine to generate a new Cu containing species almost quantitatively. The product was analyzed by NMR spectroscopy and X-ray single crystal diffraction to be a Cu enamide. Preliminary mechanistic studies suggest the reaction follows well accepted [2+2] cycloaddition mechanism for early transition metal catalyzed hydroamination. Furthermore, the reaction is likely to be a direct functionalization of the alkyne moiety of the Cu acetylide.

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