However, a statement such as 'a compound is stable in water' may mean one of two things, either that there is no reaction with water which would lead to a lower free energy of the system (thermodynamic stability) or that, although a reaction would lead to a more stable system, there ...
Well-defined organo-gallium complexes as Lewis acids for molecular catalysis: Structure–stability–activity relationships While the coordination chemistry of gallium is very rich, only a few applications of organo-gallium compounds as catalysts for molecular transformations ha... C Bour,V Gandon - 《...
The total ionic strengths of the solution are 0.2~3.0 mole dm-3, and pH = 1.5-1 .6 on the basis of Pitzer's theory, a method of determining thermodynamic stability constants of coordination compounds in mixed solvents by polynomial approximation has been proposed. Finally, the stability ...
The concentration stability constants for CuS04 in various mixed solvents, viz ethanol-water, isopropa-nol-water and dioxane-water, having a composition of organic solvent of 0, 5, 10, 15,20 and 25 mass per cent were measured spectrophotometrically at 298 ±0.5 K using NaC104 as supporting...
配位化学课件化学英语coordination compound.pptx,Coordination Chemistry;Part One Introduction and Historical Development;Part Five Complex Ion Stability;1-1. Indroduction; (1) These compounds generally contain a central ion ( usually a metal ion), surround
compounds of the type Ru(bpy)2(NCS)2 (bpy = bypyridine or a derivative; NCS = N-bonded thiocyanate) has been integral to the success in the development of Grätzel-type photoelectrochemical solar cells6,7 that have achieved photon-to-electric current conversion consistently in excess of 1...
The structural chemistry of scandium(III) has been reviewed with coordination numbers from 3 to 9 being highlighted.37 Table 1. Coordination numbers of scandium compounds. CompoundCoord. No.References Sc[N(SiMe3)2]3 3 [pyramidal(solid)planar (gas)] 1,42 Sc[N(SiHMe2)2]3(thf) 4 (...
the pyruvate-analog oxamate had to be used to investigate inhibition by pyruvate (Fig.5e). Consistent with our hypothesis, we found that compounds with similar chemical properties to pyruvate, such as oxamate, oxaloacetate and α-ketoglutarate, but not glyoxylate, inhibited PtsI (two-tailed paired...
Aluminum compounds are also known to undergo ligand-exchange reactions. Therefore, it has been possible to construct mechanisms for oxirane ring opening involving activation of the epoxide ring by an aluminum atom, while another aluminum atom contributes the alkoxide, which attacks the ring. This ...
We were pleased to find that similar to 5 and 6, spiropyran 8 could be solubilized in water in the presence of cage 4. The solubility was proportional to the amount of the dissolved cage (which has a very high, > 0.3 g/mL, solubility in water) and we consistently saw that ...