In this paper we present a study of the distribution of zeros of the Husimi function for a realistic hamiltonian model of the LiNC/LiCN molecular system. We have found that this criterion is related to that proposed by Stratt, Handy and Miller based on the nodal complexity of the wave function (J. Chem. Phys., 71 (1979) 3311), and can be used as a criterion for quantum chaology. We have also found that for scarred states there is a relation between the position of the zeros and the corresponding scarring periodic orbit.