1 4 Water + Calcium Ion 2 1 O 1.508930 0.000000 0.000000 36 2 3 3 2 H 2.132040 0.757179 0.000000 37 1 4 3 H 2.132040 -0.757179 0.000000 37 1 5 4 Ca+ -0.709606 0.000000 0.000000 12 6