Conproportionation reaction

This reaction is endothermic by 12 kJ mol-1. The formal monoamine conproportionation reaction 38... 

We now consider heteroaromatic diamines with the condition that an amino group is not a to a heterocyclic nitrogen. The only thermochemical data we can find are for 2,8-diamino acridine for which the solid-phase enthalpy is 127 7 kJmol-1. In the absence of significant substituent and solid state effects, thermoneutrality is expected for the conproportionation reaction 40 that produces diaminoarenes from monoamine derivatives. 

The conproportionation reaction of aromatic aldehydes or aldehydes lacking a-hydrogens under alkaline conditions, yielding an alcohol and an acid. 

The second set of experiments involved conproportionation reactions with controlled acidity. A ten-fold excess of the mild oxidant IF5 was added to a solution of I2 in basic HF and the acidity was gradually increased by quantitative stepwise additions of SbF5. The same general features emerged as for the first set of experiments. IF5 and I2 co-existed in basic HF. Increase in acidity led to equilibrium formation firstly of It and IJ, then of IJ and It and, in strongly acidic HF, It was the only species present other than excess IF5. 

Formation of Bonds in the Absence of Acid Ligands 9.2.11.1. Conproportionation Reactions... 

The porphyrin also undergoes aerial oxidation in acid solutions. This time, a ir-cation radical is generated with unpaired electron density delocalised over the macrocycle. This radical is also produced via a conproportionation reaction between the porphyrin and the two-electron oxidised compound. There is some evidence that the Ti-cation radical, as generated from the porphyrin, is in fact a radical dimer. It is interesting to note that the aerial oxidation of the porphyrin affords radicals that can apparently be made to switch their unpaired electron density from different parts of the molecule depending on the acidity or basicity of the surrounding medium. 

Lanthanum shows a imique feature with the only true monohalide of the rare earth elements, Lal. It was first obtained by a conproportionation reaction and quite recently... 

Under thermal aerobic conditions the reverse conproportionation reaction occurs to give [Rh2(bridge)4H]Cl3. In solutions of high concentration of HCl the tetrameric complex [Rh4(bridge)8H2]Cl4 is converted into [Rh2(bridge)4HCl]Cl2 and hydrogen ... 

C. Amatore, F. Bonhomme, J.L. Bruneel, L. Servant, L. Thouin. Mapping dynamic concentration profiles with micrometric resolution near an active microscopic surface by confocal resonance Raman microscopy. Application to diffusion near ultramicroelectrodes First direct evidence for a conproportionation reaction. J Electroanal Chem. 484 1 (2000). 

By utilizing the conproportionation reaction detailed above, a number of new derivatives have been prepared (R = Pr, Bu, Bz) and the X-ray crystal structure of [Cu(p -S2CNBu2)]4 (Fig. 233) has been carried out. This structure reveals the... 

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