NONADIABATIC ROTATIONAL COUPLING IN THE MOLECULAR RYDBERG STATES AND THEIR PARTICIPATION IN THE COLLISION PROCESSES G.V.Golubkov, G.K.Ivanov, V.L.Bodneva N.N.Semenov Institute of Chemical Physics, Russian Academy of Sciences Kosygin str. 4, Moscow 117977, Russia For describing of the l-mixing process dynamics in highly excited Rydberg molecules XY^{**} with taking into account nonadiabatic rotation coupling the method based on analysis of the rovibronical potential energies of XY^{**}+A system (where A is the neutral atom) is developed