Graziano Giuseppe, Lee Byungkook
Dipartimento di Scienze Biologiche e Ambientali, Facoltà di Scienze, Università del Sannio, Via Port'Arsa, 11-82100 Benevento, Italy.
J Phys Chem B. 2005 Apr 28;109(16):8103-7. doi: 10.1021/jp044634u.
Angell developed a simple two-state model of hydrogen bonds with the aim to describe some properties of pure water. Muller extended the two-state model description to treat the unusual thermodynamics of hydrophobic hydration. We show here that, to correctly reproduce a qualitative feature of the temperature dependence of the hydration heat capacity change of nonpolar solutes by means of the two-state Muller's model, the hydrogen bonds in the hydration shell have to be more broken than those in bulk water. This contrasts with the suggestion in the literature that more hydrogen bonds form around a nonpolar solute in water.
安吉尔建立了一个简单的氢键双态模型，旨在描述纯水的一些性质。穆勒扩展了双态模型描述，以处理疏水水合作用的异常热力学。我们在此表明，为了通过双态穆勒模型正确再现非极性溶质水合热容量变化的温度依赖性的一个定性特征，水合壳层中的氢键必须比本体水中的氢键断裂得更多。这与文献中关于水中非极性溶质周围形成更多氢键的观点形成对比。
