Table . Selected Bond Lengths and Torsion angle. Complex a For 1-Pd & 1-Pt there was disorder in one of two molecules in the unit cell, the values of the one without disorder is reported. For 1-Ni, the average of two is reported (no disorder). b The structure of Ni((h 3 -allyl)2 was determined by neutron diffraction. DFT geometry optimizations were performed to assess whether this effect arises (solely) from crystal packing.