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Table 2 Estimated hydration enthalpies (in H) of M(OH2)2+

From: Theoretical studies on metal thioarsenites and thioantimonides: synergistic interactions between transition metals and heavy metalloids

Cation R(M-O)+1.49/Å Born term with RH radii a0 from GAUSSIAN volume SCRF monopole term IPCM exp. ΔH - ΔEM(H2O)2
Cu+ 3.38 -0.079 3.48 -0.076 -0.1006 -0.092
Ag+ 3.75 -0.071 3.42 -0.078 -0.0989 -0.093
Au+ 3.68 -0.074 3.47 -0.077 -0.1112 -0.042a
Zn+2 3.36 -0.316 3.29 -0.323 -0.535 -0.486
Cd+2 3.62 -0.294 2.89 -0.368 -0.485b -0.466
Hg+2 3.60 -0.296 3.07 -0.346   -0.452
  1. aBased on estimated experimental hydration enthalpy (see ref. 23). bIPCM calculation did not converge.