Table 1. Selected bond lengths (Å).
| Yb1—N1 | 2.495 (7) |
| Yb1—O1 | 2.365 (6) |
| Yb1—O2 | 2.254 (7) |
| Yb1—O3 | 2.330 (8) |
| Yb1—O4 | 2.346 (7) |
| Yb1—O5 | 2.297 (5) |
| Yb1—O8i | 2.297 (6) |
| Yb1—O9 | 2.334 (8) |
| Cu1—N2 | 1.985 (7) |
| Cu1—O7ii | 2.641 (6) |
| Cu1—O11 | 1.944 (6) |
Symmetry codes: (i)
; (ii)
.