| Abstract
| - We report Monte Carlo simulation results for the thermodynamic and structural properties of binary nonadditivemixtures of hard spheres with not too dissimilar sizes. The simulations were carried out over a range ofparameters where fluid−fluid separation is known to compete with freezing. We investigated the onset ofstructural ordering in a one-phase scheme as that provided by the residual multiparticle entropy, an integratedmeasure of the weight of spatial correlations involving more than two particles in the configurational entropyof the system. This approach has been already tested in the symmetric case [Saija, F.; Pastore, G.; Giaquinta,P. V. J. Phys. Chem.B1998, 102, 10368]. The present study confirms the indication that a rather smallamount of nonadditivity may significantly influence the phase behavior of the mixture also in a thermodynamicregime where osmotic depletion effects do not play a leading role.
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