Ligand-exchange reactions on organotellurides by 125Te NMR spectroscopy

1991 ◽  
Vol 10 (10) ◽  
pp. 3597-3599 ◽  
Author(s):  
Rein U. Kirss ◽  
Duncan W. Brown
Keyword(s):  
Nmr Spectroscopy ◽  
Ligand Exchange ◽  
Exchange Reactions

Darstellung von triorganyl-und dialkylaminosubstituierten Fluorphosphoniumsalzen / Preparation of Triorgano-and Dialkylamino-substituted Fluorophosphonium Salts

1981 ◽  
Vol 36 (11) ◽  
pp. 1349-1355 ◽  
Author(s):  
Rainer Bartsch ◽  
Othmar Stelzer ◽  
Reinhard Schmutzler
Keyword(s):  
Nmr Spectroscopy ◽  
Sodium Fluoride ◽  
Ligand Exchange ◽  
Lewis Acidity ◽  
Fluoride Ion ◽  
Exchange Reactions

Abstract Fluorophosphonium bromides are easily accessible by ligand exchange reactions between bromophosphonium bromides and difluorophosphoranes. The reaction between fluorophosphoranes of different Lewis acidity is investigated. Fluorophosphonium-organo-fluorophosphates are formed in some cases by transfer of fluoride ion. Alkylamino-substituted fluorophosphonium bromides may be obtained by Br/F-exchange in bromo-phosphonium bromides with sodium fluoride. The products are characterized by means of 1 H, 19 F, and 31 P NMR spectroscopy.

scholarly journals Applications of NMR spectroscopy in understanding the gold biochemistry

2006 ◽  
Vol 20 (3) ◽  
pp. 109-123 ◽  
Author(s):  
Anvarhusein A. Isab ◽  
Saeed Ahmad
Keyword(s):  
Nmr Spectroscopy ◽  
Ligand Exchange ◽  
Bioinorganic Chemistry ◽  
The Body ◽  
Powerful Method ◽  
Exchange Reactions ◽  
Kinetics And Thermodynamics ◽  
Physiological Conditions ◽  
Gold Drugs ◽  
Interesting Area

Gold-based drugs have been successfully used for the treatment of rheumatoid arthritis. When administered, they undergo ligand exchange reactions in the body with biofluids, cells and proteins. NMR spectroscopy is a very useful technique for probing these ligand exchange reactions under physiological conditions. The strength of the binding ligands can be estimated by studying the chemical shift changes in13C and31P NMR. It is also a powerful method for investigating the kinetics and thermodynamics of the exchange reactions of gold drugs with biomolecules. The purpose of this review report is to highlight the importance of NMR spectroscopy in the study of gold biochemistry and to bridge the fairly large gap in the progress of this interesting area of bioinorganic chemistry.

Voltammetric Studies of Some Novel Fe(III) Complexes with Quadridentate Ligands. The Axial Ligand-Exchange Reactions in DMF and DMSO

1995 ◽  
Vol 60 (7) ◽  
pp. 1140-1157 ◽  
Author(s):  
Ljiljana S. Jovanovic ◽  
Luka J. Bjelica
Keyword(s):  
Oxidation State ◽  
Chemical Reactions ◽  
Ligand Exchange ◽  
Kinetic Data ◽  
Central Atom ◽  
Axial Ligand ◽  
Exchange Reactions ◽  
Ligand Effect ◽  
Condensation Products ◽  
Voltammetric Studies

The electrochemistry of four novel Fe(III) complexes of the type [Fe(L)Cl], involving quadridentate ligands based on the condensation products of benzoylacetone-S-methylisothiosemicarbazone with salicylaldehyde, 5-chlorosalicylaldehyde, 3,5-dichlorosalicylaldehyde or 5-nitrosalicylaldehyde, was studied in DMF and DMSO at a GC electrode. All complexes undergo a two-step one-electron reductions, usually complicated by chemical reactions. In solutions containing Cl-, the ligand-exchange reactions Cl--DMF and Cl--DMSO take place. Stability of the chloride-containing complexes was discussed in terms of the coordinated ligand effect, oxidation state of the central atom and, in particular, of the donor effect of the solvent. Some relevant kinetic data were calculated.

A first-principles study of the atomic layer deposition of ZnO on carboxyl functionalized carbon nanotubes: the role of water molecules

2021 ◽  
Vol 23 (5) ◽  
pp. 3467-3478
Author(s):  
J. I. Paez-Ornelas ◽  
H. N. Fernández-Escamilla ◽  
H. A. Borbón-Nuñez ◽  
H. Tiznado ◽  
Noboru Takeuchi ◽  
...  
Keyword(s):  
First Principles ◽  
Ligand Exchange ◽  
Functional Group ◽  
Atomic Layer ◽  
High Reactivity ◽  
Water Molecules ◽  
Exchange Reactions ◽  
Layer Deposition ◽  
The Right

Atomic description of ALD in systems that combine large surface area and high reactivity is key for selecting the right functional group to enhance the ligand-exchange reactions.

An unusual example ofendo-stereoselectivity in the ligand exchange reactions of rhodium(i)diethylene derivatives withpara-semiquinoid ligands

1996 ◽  
Vol 45 (9) ◽  
pp. 2203-2206 ◽  
Author(s):  
S. V. Sergeev ◽  
V. A. Nikanorov ◽  
S. G. Novikov ◽  
P. V. Petrovskii ◽  
D. V. Zverev
Keyword(s):  
Ligand Exchange ◽  
Exchange Reactions
Sign in / Sign up

Export Citation Format

Share Document