The present study regarding the thermal behavior of some ferrocene derivatives with liquid crystal properties is aimed at evaluating the relationship between structure-thermostability-degradation mechanism, leading to information about their applications, processing parameters and industrial waste recycling procedures. The thermostability series of some ferrocene derivatives bearing the ferrocenyl unit rigidly connected to the mesogen and of some analogous phenyl compounds were established; the influence of the connecting groups, the ferrocene and the cholesterol units upon the thermal stability was investigated. (C) 2010 Elsevier B.V. All rights reserved.