Sulphonates compounds

A number of sulphoxide and sulphone compounds, whose molecular structure was determined by X-ray analysis, was considered next27-32. 

As already anticipated, the molecular surface we calculate is useful in describing condensed state properties. There is a steady linear relationship between SM and packing energy for organic crystals24, and the sulphoxide and sulphone compounds make no... 

Benzene mono- di- and tri-sulphonic acids are stable towards electrochemical reduction. More highly sulphonated compounds undergo a two-electron cleavage of a carbon-sulphur bond with elimination of sulphurous acid [82]. Thus benzene-hexa-sulphonic acid 14, in aqueous solution at pH 8, shows three two-electron po-larographic waves with half-wave potentials -1.00, -1.45 and 1.65 V vs. see, due to the sequential loss of substituents. The half-wave potentials are independent of pH. 

Sodium Sulphate.—The presence of this salt in the ash does not always indicate its addition to the colouring matter, since sulphonic compounds leave a large amount of ash containing this salt. Added sodium sulphate is hence tested for as follows ... 

Fig. 7.1 shows the trace obtained from the analysis of undegraded linear alkylbenzene sulphonate (LAS) mixture (sodium dodecylbenzene sulphonate). Peak identifications were made by co-injection with pure undegraded linear alkylbenzene sulphonate compounds and confirmed by analysis of the undegraded linear alkylbenzene sulphonate mixture by desulphonation followed by gas chromatography of the resultant alkylbenzenes on a 15m OV-1 support coated open-tubular column. 

Sometimes it is convenient to synthesise an activated alcohol that can be used in nucleophic substitution reactions like an alkyl halide. Mesylates and tosylates are such sulphonate compounds which serve this purpose. They can be synthesised by action of alcohols with sulphoxyl chlorides in the presence of a base like pyridine or triethylamine (Following fig.). The base serves to mop up the HC1 that is formed and avoids acid-catalysed rearrangement reactions. 

Naphthalene sulphonate compound, used as dispersing agent, especially for vat and disperse dyes. 

The effect of various sulphate esters and sulphonate compounds on the 4-second contraluminal 35S042- influx into renal cortical tubular cells has been investigated114a... 

Esposito A., Del Borghi A., and Veglio F., Investigation of naphthalene sulphonate compounds sorption in a soil artificially contaminated using batch and column assays. Waste Manage., 22, 937-943, 2002. 

The free oil guaranteed figures are achievable when the organic raw material sulph(on)atability is 99.0% (the sulphonatability would be established by analysis of the paraffin content in the free oil extracted from ie acid after the sulphonability test) and with a 99.5% yield of the sulphonable compound. 

Recently, the molecular structures of a relatively large number of sulphone compounds have been elucidated in the vapour phase by electron diffraction and microwave spectroscopy. The main purpose of these studies is the determination of the sulphur bond configuration and the conformational properties. This leads to the observation and correlation of characteristic structural variations as various ligands are attached to the SO2 group and as comparisons are made with related molecules. 

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