High-Level ab-initio Electronic Structure Calculations of Water Clusters (H2O)16 and (H2O)17 : a New Global Minimum for (H2O...

The lowest-energy structures of water clusters (H2O)16 and (H2O)17
were revisited at the MP2 and CCSD(T) levels of theory. A new global minimum
structure for (H2O)16 was found at both the MP2 and CCSD(T) levels of theory, and
the effect of zero-point energy corrections on the relative stability of the low-lying
minimum energy structures was assessed. For (H2O)17, the CCSD(T) calculations
confirm the previously found at the MP2 level of theory “interior” arrangement
(fully coordinated water molecule inside a spherical cluster) as the global minimum