Time-resolved fluorescence of iodine monochloride

A new ion-pair state of iodine chloride

“…vapor (1 2) -the rate constant T I -' is calculated to be between one and two orders of magnitude greater than hard sphere. This value of T , -' is quite similar in magnitude to the rate constant for electronic selfquenching of the A state as reported some years ago by Holleman and Steinfeld (13). Although these two processes are physically distinct, it is natural to assume that the large crosssection implied in both cases is due to the field associated with the permanent electric moment.…”

Isotope Selective Photoaddition of Iodinechloride to Acetylene

“…There are also several attempts t o predict t h e dielectric behaviour of polar compounds by means o f theoretical calculations of t h e polar interactions. The hard core approaches of Chandler and coworkers [25] agree qualitatively with the neutron-diffraction studies [9]. Paolini et al [26] suggest the possible presence of polymeric clusters in liquid acetonitrile based on CND0/2 calculations.…”

“…Kratochwill et al [lo] propose a model t h a t is based on correlation clusters: T h e first coordination sphere around a reference molecule consists of four antiparallel arranged molecules. This structure is strongly supported b y light-scattering studies of Versmold [8] and neutron-diffraction studies of Zeidler et al [9], who also found t h a t t h e molecules a r e arranged t o a certain degree antiparallel in t h e first coordination sphere and in a parallel manner i n t h e second shell of t h e reference particle.…”

“…Dependence of the enrichment factor Don the energy difference AE of the excited ICl(A3 Ill) state from the dissociation limit for a pure ICl/C,H, mixture and one containing in addition 9 Torr of krypton C2H2ICI 190 Fig. 9 Mass spectrum (parent ion) of C,H,ICl and C2H,C1, after completely isotope selective excitation for 137CI compared to the natural abundance (bars below)…”

Excited state dynamics of Cl2O in the near ultraviolet

“…7, is the A 3 ⌸ 1 state. Below its dissociation threshold ͑2.153 eV, or 576 nm͒, the very long lifetime of this state ͑100 s at 607 nm͒ 30 explains the persistence of the DI signal when the VIS pulse arrives before the UV pulse, whereas its short lifetime above the dissociation threshold requires that the pulses be temporally overlapped.…”