Molecular Dynamics in [N(CH3)4]3Bi2Cl9
Relaxation times T1 were mesured for protons in [N (CH3) 4]3Bi2CI9 in the temperature range 94-268K in magnetic fields 2. 1T (see Fig. 1). From crystallographic structure of isostructurai crystal [l] it has been assumed the existence of two inequivalent types of (NCCH3)4]+ cations denoted by A and B.