Application of Two-Dimensional Models

The 2-D model described in Secs. 2.6 and 3.10 was also extended to examine the question of the H(f 0 interaction. We present 

The reason for this particular choice of molecular parameters and the details of the computation based on the solution of the Percus-Yevick equation are discussed at great length in Ben-Naim (1972cde, 1974). 

Basically, the idea was to produce local density around molecules that are fully HBed. The situation is schematically shown in Fig. 4.41. With the specific parameters in (4.10.1), it is clear that once a water molecule is fully HBed, it will not allow other water molecules to come very close to it. On the other hand, a solute molecule with a diameter of about 0.75 can come close to the fully HBed water molecule. 

These findings suggest that solute particles with the correct diameter have a large probability of fitting into cavities or partial cavities, where the bond directions of the w particles are not oriented toward the solute particles. 

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