We report rotational profiles in the laser induced fluorescence excitation spectrum recorded for the B(3)1(5(3)P(1))<- X(1)0(+)(5(1)S(0)) transition in CdNe van der Waals complex. A method of analyzing the rotational structure of overlapping vibrational bands with isotopic spectral contributions is discussed. Rotational characteristics By and Dy for the upsilon'=0, 1, 2 and upsilon ''=0 are reported. (C) 2015 Elsevier B.V. All rights reserved.