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Figure 1 Coordination geometry of the Ni atom in (I) showing the crystallographic numbering scheme. Displacement ellipsoids are shown at the 70% probability level. Symmetry operation i: 1 − x, 1 − y, 1 − z & ii: 2 − x, 1 − y, 2 − z. Only one orientation of the disordered O2—C5—C8 butyl group is shown for clarity. |