McReynolds

Table 11.13 McReynolds Constants for Stationary Phases in Gas Chromatography...

Similar stationary phases Temp., °C McReynolds constants USP code... 

The McReynolds number gives an approximate indication of polarity on a scale of 0 (nonpolar) to about 1000 (extremely polar). 

Hexamminecobalt(IH) chloride [10534-89-1] M 267.5. Crystd from warm water (8mL/g) by cooling. [Bjerrum and McReynolds Inorg Synth 2 217 1946.]... 

In a series of papers published throughout the 1980s, Colin Poole and his co-workers investigated the solvation properties of a wide range of alkylammonium and, to a lesser extent, phosphonium salts. Parameters such as McReynolds phase constants were calculated by using the ionic liquids as stationary phases for gas chromatography and analysis of the retention of a variety of probe compounds. However, these analyses were found to be unsatisfactory and were abandoned in favour of an analysis that used Abraham s solvation parameter model [5]. 

Solvent selectivity is a measure of the relative capacity of a solvent to enter into specific solute-solvent interactions, characterized as dispersion, induction, orientation and coaplexation interactions, unfortunately, fundamental aiq>roaches have not advanced to the point where an exact model can be put forward to describe the principal intermolecular forces between complex molecules. Chromatograidters, therefore, have come to rely on empirical models to estimate the solvent selectivity of stationary phases. The Rohrschneider/McReynolds system of phase constants [6,15,318,327,328,380,397,401-403], solubility... 

INTERACTIONS CHARACTERIZED BY MCREYNOLDS PROBES (ROHRSCHNEIOER PROBES IN PARENTHESES)... 

Tweedie, S., Paxton, W.A., Ingram, L., Maizels, R.M., McReynolds, L.A. and Selkirk, M.E. (1993) Brugia pahangi a surface-associated glycoprotein (gpl5/400) is composed of multiple tandemly repeated units and processed from a 400-kDa precursor. Experimental Parasitology 76, 156-164. 

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