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8.4.2 Product Subclass 2: Rubidium and Cesium Halides

DOI: 10.1055/sos-SD-008-01295

Kellogg, R. M.Science of Synthesis, (200681485.

General Introduction

The most common motivation for considering the use of rubidium or cesium halides for chemical reactions appears to be the hope that the halide will be more reactive and/or available in higher concentrations than in other halide sources. These expectations are mainly based on the size and polarizability of rubidium and cesium cations. Some physical characteristics of the entire family of alkali metal cations are given in Table 1.[‌1‌] As one proceeds from the lithium to the cesium cation, the radius more than doubles, the surface charge density decreases by more than a factor of four as a result of the increasing size of the sphere, and the polarizability of the cesium cation is nearly 100 times that of the lithium cation.

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References


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