1 18 Water Hexamer Ring Structure 2 1 O -0.810879 1.418888 -2.197601 1 2 3 3 2 H -0.407351 2.230489 -2.514906 2 1 4 3 H -1.190544 1.641800 -1.332060 2 1 5 4 O -1.887487 2.090605 0.245302 1 5 6 6 5 H -1.458037 1.728162 1.037263 2 4 7 6 H -2.830041 1.987042 0.397221 2 4 8 7 O -0.705050 1.068725 2.511503 1 8 9 9 8 H -0.231294 0.225346 2.426273 2 7 10 9 H -0.136188 1.626920 3.047252 2 7 11 10 O 0.659675 -1.312960 2.303729 1 11 12 12 11 H 0.256131 -2.124559 2.621016 2 10 13 12 H 1.039348 -1.535865 1.438190 2 10 14 13 O 1.736294 -1.984673 -0.139172 1 14 15 15 14 H 1.306847 -1.622226 -0.931134 2 13 16 15 H 2.678849 -1.881122 -0.291093 2 13 17 16 O 0.553851 -0.962795 -2.405372 1 17 18 18 17 H -0.015027 -1.520994 -2.941100 2 16 19 18 H 0.080100 -0.119414 -2.320142 2 16 20