Crossed beam scattering studies of the dynamics of the reaction NH+ (D-2; H, D) NHD+, ND2+

he dynamics of formation of NHD+ and ND2+ in reaction between NH+ and D-2 w as investigated over the collision energy range of 0.5-3.0 eV (c.m.) using two different scattering machines. Scattering data show, in good agreement, formation of an intermediate complex MHD2+ in this reaction. Decreasing fo rward-backward symmetry of the scattering pattern, and changes in the c.m, angular distribution over the investigated collision energy range indicate that the dominant reaction path goes via the excited state of the intermedi ate NHD2+((1)A '), bound with respect to the reactants by about 4 eV. Low-e nergy parts and positions of maxima of the distributions of product relativ e translational energy are predicted well by the Klots model of translation al energy release in statistical complex decomposition at collision energie s 0.5 eV and 1.3 eV.