1 18 Water Hexamer Cage Structure 2 1 O -0.292774 -1.544171 0.112005 1 2 3 3 2 H 0.065744 -0.676721 -0.128105 2 1 4 3 H -1.201688 -1.562200 -0.191799 2 1 5 4 O 1.203608 0.596026 -0.769486 1 5 6 6 5 H 2.030612 0.411802 -0.306699 2 4 7 6 H 1.351308 0.303715 -1.678812 2 4 8 7 O 2.099724 -0.629355 -3.217991 1 8 9 9 8 H 3.018812 -0.333793 -3.118157 2 7 10 9 H 1.906103 -0.598903 -4.157859 2 7 11 10 O 3.675539 -0.753097 0.056485 1 11 12 12 11 H 3.157665 -1.520968 -0.244082 2 10 13 12 H 4.117309 -1.036589 0.861261 2 10 14 13 O 2.028685 -2.570952 -1.075367 1 14 15 15 14 H 1.954732 -2.129021 -1.931867 2 13 16 15 H 1.171429 -2.435979 -0.644325 2 13 17 16 O 4.577803 0.198754 -2.383950 1 17 18 18 17 H 4.785104 1.135184 -2.344318 2 16 19 18 H 4.423765 -0.084944 -1.469883 2 16 20