FIG. . Spin densities for a single water-electron system in the confining potential of Eq. 1. Three different orientations are considered, corresponding to the three columns and indicated by the molecular graphic at the top. Three values of confinement in the z direction (electron-water direction) are shown as the three rows. BLYP and BH&HLYP spin densities (dashed blue and solid black curves respectively) are compared to MP2 results (green circles). Also shown are the confining potentials (red dotted curve, right axis labels).