To investigate the effect of the structure of the potential energy surface on the vector properties of the O(D-1) + HCl reaction, we carried out a quasiclassical trajectory study of some two and three vector correlations. The analysis of the allocation of the angular momentum and of the variation with the scattering angle of the second Legendre moment related to the distribution of the product rotational angular momentum with respect to relative velocity indicated that the formation of an intermediate complex is responsible for deviations from the kinematic limiting behavior. The complex formation explains also the agreement of trajectory results with those of a statistical model reaction proposed by Herschbach (Case, D. A.; Herschbach, D. R. Mol. Phys. 1975, 30, 1537).