Using aug-cc-pVDZ basis sets supplemented with diffused bond functions, the (H2O)4- isomer of the water tetramer anion in Ci-symmetry was optimized at the MP2 level.

• 使用aug-cc-pVDZ基组附加键函数的方法，水分子四聚体负离子(H2O)4-的Ci－对称性异构体在MP2方法下被优化得到。