Preparation and characterization of cobalt-containing P,N-ligands and an unusual palladium complex ion pair: their applications in amination reactions

Tetrahedron ◽  
2008 ◽  
Vol 64 (40) ◽  
pp. 9507-9514 ◽  
Author(s):  
You-Chen Hsiao ◽  
Wen-Yuan Chiang ◽  
Chia-Ming Weng ◽  
Fung-E. Hong
Keyword(s):  
Palladium Complex ◽  
Ion Pair ◽  
Complex Ion

scholarly journals Darstellung und Charakterisierung von Tetrabutylammonium-Tetraiodooxotechnetat(V), (TBA) [TcOI4] / Preparation and Characterization of Tetrabutylammonium Tetraiodooxotechnetate(V), (TBA)[TcOI4]

1981 ◽  
Vol 36 (2) ◽  
pp. 138-140 ◽  
Author(s):  
G. Peters ◽  
W. Preetz
Keyword(s):  
Raman Spectrum ◽  
Exchange Reaction ◽  
Vibrational Spectra ◽  
Ligand Exchange ◽  
Resonance Raman ◽  
The Other ◽  
Resonance Raman Spectrum ◽  
Ligand Exchange Reaction ◽  
Complex Ion

Abstract Pure (TBA)[TcOI4] is prepared from (TBA)[TcOCl4] by ligand exchange reaction with Nal in acetone. The vibrational spectra indicate C4v symmetry for the complex ion. On excitation with the 514.5 nm line of an Ar-laser a resonance Raman spectrum is obtained showing v(TcO) = 996 cm-1 and four of its overtones, symmetrically surrounded by groups of bands arising as well from the sums as from the differences of frequencies with the other fundamentals. In contrast to the ligand exchange reaction the reduction of Tc04- with conc. HI yields products always contaminated with polyiodides. The extremely strong Raman scatterer (TBA)l3 is detected by a characteristic doublet at 111 and 116 cm-1 and even small amounts of it cover the Raman spectrum of (TBA)[TcOI4].

Hydrogen-bonded complex-ion-pair equilibriums in 3,4-dinitrophenol-amine-aprotic solvent systems

1972 ◽  
Vol 76 (14) ◽  
pp. 1989-1993 ◽  
Author(s):  
R. A. Hudson ◽  
R. M. Scott ◽  
S. N. Vinogradov
Keyword(s):  
Aprotic Solvent ◽  
Ion Pair ◽  
Solvent Systems ◽  
Complex Ion ◽  
Hydrogen Bonded

scholarly journals Synthesis and characterization of a new bis-NHC palladium complex and its catalytic activity in the Mizoroki–Heck reaction

2020 ◽  
Vol 44 (11-12) ◽  
pp. 684-688
Author(s):  
Can Feng ◽  
Cheng-xin Liu ◽  
Yu-fang Wang ◽  
Jin Cui ◽  
Ming-jie Zhang
Keyword(s):  
Palladium Complex ◽  
Coupling Reaction ◽  
Aryl Halides ◽  
Heck Coupling ◽  
X Ray ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Excellent Stability ◽  
C Nmr

A new bis- N-heterocyclic carbene palladium complex, (C13H9N2F2)2PdCl2, is synthesized by a three-step reaction and characterized by 1H NMR and 13C NMR spectroscopy as well as by X-ray crystallography. This new bis- N-heterocyclic carbene palladium complex has excellent stability and is capable of efficiently catalyzing the Mizoroki–Heck coupling reaction of aryl halides with acrylates.

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