Spectroscopy and dynamics of open-shellvan der Waals complexes and iodine argon(n) clusters

he structure and dynamics of OH/D-Ne complexes have been probed via studies of the A-X electronic transition. Bands associated with the OH/D 0-0, 1-0, and 2-1 transitions have been rotationally resolved and analyzed. Closely similar progressions of van der Waals vibrational levels were seen in conjunction with each parent transition. In the A state, the observed levels were assigned to the zero point, the OH/D-Ne stretch fundamental, and internal rotor-stretch combinations. Electronic predissociation of OH(A, v = 2)-Ne was also observed. The rate for this process was found to be dependent on the average position of the Ne atom.;OH/D-Kr complexes have been characterized via laser excitation of the OH/D A-X system. Progressions of the OH/D-Kr stretch were seen in conjunction with the OH/D 0-0 and 1-0 transitions. Properties defined by the spectroscopic analysis indicated weak, van der Waal bonding in the ground state, and incipient chemical bonding in the excited state. Vibrational predissociation of OH/D-Kr was observed through homogeneous broadening of the rotational lines. The predissociation rates ranged from ;Electronic spectra and predissociation dynamics for the CN-Ne van der Waals complex are reported. Rotationally resolved spectra of CN-Ne associated with CN B-X, 0-0, 1-0, and A-X 3-0 transitions have been recorded and analyzed. Hindered-internal-rotation (HIR) and end-over-end rotation motion of CN-Ne have been investigated. Rotational analysis showed that the CN-Ne van der Waals bond length was almost unchanged upon electronic excitations.;Excitation spectra for the CN-Ne A-X transition were strongly influenced by predissociation processes. Two channels were characterized for ;Visible and near-UV emissions of...