The dissociation dynamics of He-2 center dot center dot center dot(ICl)-Cl-35 complexes prepared with varying amounts of intermolecular vibrational excitation within the 2He + (ICl)-Cl-35(B,v' = 3) potential energy surface are reported. For the intermolecular level associated with one He atom in an energetically excited, delocalized state and the other localized in the lowest-energy, T-shaped potential minimum, the higher-energy He atom dissociates preferentially. The binding energy of the ground-state He-2 center dot center dot center dot(ICl)-Cl-35( X,v '' = 0) conformer with a police nightstick geometry (one He atom in the T-shaped minimum and the second in the linear well) is measured to be 38.6(9)cm(-1). (C) 2013 Elsevier B.V. All rights reserved.