We report recent results on structural and lattice dynamical investigations
of Li.16ZrNCl and its non superconducting reference ZrNCl using the method
s of elastic and inelastic neutron scattering as well as of inelastic light
scattering. Comprehensive information is obtained by accompanying lattice
dynamical calculations with a Born von Karman model. Significant spectral s
hifts which might be connected to strong electron-phonon coupling in the su
perconducting system are observed.