Cu 2+ with P2O7 4- 1 1 12 1 0 -1 8.83 1 0 -2 16.01 1 0 -3 21.71 1 0 -4 22.5 1 1 -2 17.61 2 1 -4 33.80 1 1 -1 14.30 2 1 -3 30.59 2 1 -2 26.19 1 1 0 9.07 2 1 -1 20.41 2 1 0 13.65 0.10 0.10