Highly Active Ethene Polymerization Catalysts with Unusual Imine Ligands - Late Transition Metal Polymerization Catalysis - page 69

Fig. 3.2 Molecular structure of nickel com-
plex 37 ; hydrogen atoms are omitted for
clarity. Selected bond distances (pm):
Ni(1)-Br(1) =240.9(2), Ni(1)-Br(2) =250.9(2),
Ni(1)-N(1) =209.6(11), Ni(1)-N(3) =
213.1(10), N(1)-N(2) =144.0(13),
N(1)-C(1) =125.8(14), C(1)-C(2)=150(2),

N(3)-C(2) =129.6(14), N(3)-C(17)=142.6(14).
Selected angles ( ): Br(1)-Ni(1)-Br(2)=
106.18(8), Br(1)-Ni(1)-Br(2a) =103.78(9),
Ni(1)-Br(2)-Ni(1a) =91.97(7), N(1)-Ni(1)-
Br(2) =89.9(3), N(3)-Ni(1)-Br(2a) =93.4(3),
N(1)-Ni(1)-N(3)=78.5(4).

Fig. 3.3 View of nickel complex 37 showing the orthogonal N-2,6-diisopro-
pylphenyl and N-2,5-diisopropylpyrrolyl groups with respect to the ligand
backbone [N,N]Ni plane.