Table 1. Experimental versus Calculated Hydration Entropy. Experimental Values Are Taken from Marcus.⁴⁴ All values Are Given in J mol^–1 K^–1.

	Li+	Na+	K+	Rb+	Cs+	Mg2+	Mn2+	Ca2+
exp	–142	–111	–74	–65	–59	–331	–292	–252
TIP3P	–45.7	–33.5	–28.9	–27.0	–24.8	–94.3	–108	–93.7
SPC/E	–42.9	–31.0	–27.0	–24.1	–22.5	–91.8	–102	–88.9
TIP4P	–37.2	–30.2	–25.4	–23.7	–22.2	–72.8	–81.5	–80.3
TIP4Pew	–36.5	–29.2	–23.8	–22.9	–21.8	–73.2	–78.3	–75.5