  We propose a simple model to study resonant tunneling through an organic
molecule between to conducting leads, taking into account the vibrational modes
of the molecule. We solve the model approximately analytically in the weak
coupling limit and give explicit expressions for the thermopower and Seebeck
coefficient. The behavior of these two quantities is studied as function of
model parameters and temperature. For a certain regime of parameters a rather
peculiar variation of the thermopower and Seebeck coefficient is observed.
  Although the model is very simple, we expect it to give some nontrivial
insight into thermal transport properties through nan-devices. Furthermore,
because we can provide an analytical solution, it may eventually serve as
benchmark for more advanced analytical or computational methods.
