Single crystal structure of a polymerization active Nd‐Al bimetallic complex

A polynuclear Nd‐Al bimetallic complex in single crystalline form, which is active for diene polymerization, was isolated and its detailed structure was determined by X‐ray diffraction technique. The results indicate that the crystal is triclinic, space group P1; the lattice parameters are: a = 15,195(6), b = 15,263 (5), c = 13,749 (4) Å; α = 90,01 (2), β = 95,12 (3), γ = 82,65 (3)°; V = 3149,5 Å3; Z = 1. The coordination number of the Nd atom is seven and the configuration is monocap‐prism. Nd atoms can be divided into three groups according to their coordination environment.