Concerted Process of Racemization

3 Racemizations of Alkyl Groups in Cobaloxime Complex Crystals 

In order to explain the different rates of A and B, the reaction cavities were calculated for 1-ce groups of A and B at two temperatures. The volumes of the A and B cavities are 10.2 and 14.3 at 293 K and 10.8 and 12.8 at 343 K, respectively. Surprisingly, the volume of the B cavity decreases with the increase in temperature, although the unit cell expands by 35 A at 343 K. The A cavity, on the other hand, has approximately the same volume at the two temperatures. The inversion rate 

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