In this study a mathematical model of the neutral molecules motion in inhomogeneous static and pulsed electric fields has been developed. For the first time the possibility of spatial separation of molecules with polarizability and/or constant dipole moment in these fields has been demonstrated .In the suggested method the dipole moment angular dispersion was estimated. This was done on the simplest example of the electrostatic field of a parallel threads system and the known values of constant dipole moments for endofulleren molecules La@C82 and  Y@C82.