Based on an accurate and full-dimensional PES, the state-to-state dynamics description at a quantitative level comparable to experiments would need full dimensional quantum mechanical (QM) calculations. However, for polyatomic systems this goal is far from being achieved because the calculations are computationally prohibitive. In this case, quasi-classical trajectory (QCT) calculations represent an interesting and computationally economic alternative, although their classical nature presents some limitations. Using the PES-2023 surface, QCT calculations were performed at room temperature, to compare with the experimental evidence. We begin with the initial conditions of the trajectories. QCT calculations on the PES-2023 surface were performed using the VENUS96 code. Trajectories were propagated from an initial C-CN separation of 15 Å, and stopped when this distance was greater than 20 Å. These long distances entail long flight times and more computational