The cluster with twenty-four water molecules was analyzed in five stages. In the first stage, the parent configuration generated 510 proto-PCMs and similar to the previous section, sort-select was necessary to limit the number of computations performed. In summary, 110 proto-PCMs were analyzed, 7 failed to optimize. Thirteen distinct families were identified as illustrated by the swarmplot (Figure ). Eight PCMs did not match with any hydrogen bonding family and further analyses were not pursued on these because they were relatively higher energy than the lowest energy hydrogen bonding family. The energy ranges of the points found falling in the different hydrogen bonding families are shown in Table . The energy decreased from the initial parent geometry by 52 kJ/mol and difference between the maximum and minimum energies is 66 kJ/mol.