Fig. 1. Displacement-ellipsoid (50%) representation of 2. All hydrogen atoms are omitted for clarity. Selected bond distances (Å) and angles (°) for 2: Ni1–N1 2.041(3), Ni1–P1 2.2022(1), Ni1–P2 2.2063(1), Ni1–N2 1.752(3), N2–N3 1.138(4), N1–Ni1–N2 126.81(1), P1–Ni1–P2 133.37(4).