Table 2.
Relevant bond distances and angles for the X-ray structures of the Cu(ii) complexes (standard deviations in parentheses)
| Cu–2 | |||
| Cu(1)–O(4) | 1.979(3) | Cu(1)–N(3) | 2.076(4) |
| Cu(1)–N(4) | 2.094(4) | Cu(1)–N(2) | 2.095(4) |
| Cu(1)–N(1) | 2.287(4) | Cu(1)–O(2) | 2.322(3) |
| Cu(2)–O(6) | 1.917(4) | Cu(2)–N(6) | 2.042(4) |
| Cu(2)–N(7) | 2.065(5) | Cu(2)–N(8) | 2.068(4) |
| Cu(2)–N(5) | 2.165(4) | ||
| O(4)–Cu(1)–N(3) | 173.39(15) | O(4)–Cu(1)–N(4) | 88.91(15) |
| N(3)–Cu(1)–N(4) | 86.29(16) | O(4)–Cu(1)–N(2) | 93.02(15) |
| N(3)–Cu(1)–N(2) | 92.24(16) | N(4)–Cu(1)–N(2) | 173.72(16) |
| O(4)–Cu(1)–N(1) | 102.19(15) | N(3)–Cu(1)–N(1) | 82.37(15) |
| N(4)–Cu(1)–N(1) | 90.02(16) | N(2)–Cu(1)–N(1) | 83.73(17) |
| O(4)–Cu(1)–O(2) | 86.04(13) | N(3)–Cu(1)–O(2) | 89.39(14) |
| N(4)–Cu(1)–O(2) | 89.61(13) | N(2)–Cu(1)–O(2) | 96.49(15) |
| N(1)–Cu(1)–O(2) | 171.75(14) | O(6)–Cu(2)–N(6) | 93.02(17) |
| O(6)–Cu(2)-N(7) | 162.35(18) | N(6)–Cu(2)–N(7) | 94.95(17) |
| O(6)–Cu(2)–N(8) | 87.47(16) | N(6)–Cu(2)–N(8) | 178.63(18) |
| N(7)–Cu(2)–N(8) | 84.94(17) | O(6)–Cu(2)–N(5) | 110.32(18) |
| N(6)–Cu(2)–N(5) | 85.75(17) | N(7)–Cu(2)–N(5) | 85.99(17) |
| N(8)–Cu(2)–N(5) | 92.88(18) | ||
| Cu–H2 | |||
| Cu(1)–O(1) | 1.9778(14) | Cu(1)–N(3) | 2.0611(19) |
| Cu(1)–N(1) | 2.068(2) | Cu(1)–N(4) | 2.0705(18) |
| Cu(1)–N(2) | 2.2147(19) | Cu(1)–O(3) | 2.5207(17) |
| O(1)–Cu(1)–N(3) | 87.86(7) | O(1)–Cu(1)–N(1) | 92.30(7) |
| N(3)–Cu(1)–N(1) | 179.70(8) | O(1)–Cu(1)–N(4) | 173.01(7) |
| N(3)–Cu(1)–N(4) | 86.47(7) | N(1)–Cu(1)–(4) | 93.39(8) |
| O(1)–Cu(1)–N(2) | 99.75(8) | N(3)–Cu(1)–N(2) | 93.99(7) |
| N(1)–Cu(1)–N(2) | 85.74(7) | N(4)–Cu(1)–N(2) | 84.73(8) |
| O(1)–Cu(1)–O(3) | 86.24(6) | N(3)–Cu(1)–O(3) | 87.56(6) |
| N(1)–Cu(1)–O(3) | 92.70(7) | N(4)–Cu(1)–O(3) | 89.44(7) |
| N(2)–Cu(1)–O(3) | 173.86(7) | ||
| Cu–H22 | |||
| Cu(1)–O(1) | 2.0323(19) | Cu(1)–N(1) | 2.064(2) |
| Cu(1)–N(3) | 2.065(2) | Cu(1)–N(4) | 2.068(2) |
| Cu(1)–N(2) | 2.204(3) | Cu(1)–O(3) | 2.485(2) |
| O(1)–Cu(1)–N(1) | 87.06(9) | O(1)–Cu(1)–N(3) | 171.95(8) |
| N(1)–Cu(1)–N(3) | 86.97(9) | O(1)–Cu(1)–N(4) | 92.33(8) |
| N(1)–Cu(1)–N(4) | 179.26(9) | N(3)–Cu(1)–N(4) | 93.68(9) |
| O(1)–Cu(1)–N(2) | 100.54(9) | N(1)–Cu(1)–N(2) | 94.19(10) |
| N(3)–Cu(1)–N(2) | 85.28(9) | N(4)–Cu(1)–N(2) | 85.51(9) |
| O(1)–Cu(1)–O(3) | 83.16(8) | N(1)–Cu(1)–O(3) | 87.13(9) |
| N(3)–Cu(1)–O(3) | 91.15(8) | N(4)–Cu(1)–O(3) | 93.22(8) |
| N(2)–Cu(1)–O(3) | 176.12(8) | ||
| Cu–4 | |||
| Cu(1)–O(1) | 1.9598(15) | Cu(1)–N(1) | 2.0254(17) |
| Cu(1)–N(4) | 2.0325(17) | Cu(1)–N(2) | 2.0407(16) |
| Cu(1)–N(3) | 2.2222(17) | Cu(1)–O(3) | 2.3713(15) |
| O(1)–Cu(1)–N(1) | 178.81(7) | O(1)–Cu(1)–N(4) | 96.31(7) |
| N(1)–Cu(1)–N(4) | 83.32(7) | O(1)–Cu(1)–N(2) | 93.42(6) |
| N(1)–Cu(1)–N(2) | 86.73(7) | N(4)–Cu(1)–N(2) | 165.21(7) |
| O(1)–Cu(1)–N(3) | 96.04(7) | N(1)–Cu(1)–N(3) | 82.80(7) |
| N(4)–Cu(1)–N(3) | 85.52(7) | N(2)–Cu(1)–N(3) | 82.39(6) |
| O(1)–Cu(1)–O(3) | 86.71(6) | N(1)–Cu(1)–O(3) | 94.47(7) |
| N(4)–Cu(1)–O(3) | 103.07(6) | N(2)–Cu(1)–O(3) | 88.57(6) |
| N(3)–Cu(1)–O(3) | 170.68(6) | ||