Photodissociation of ClNO in the A band

Felder, P.; Morley, Gregory P.

doi:10.1016/0301-0104(94)00120-0

Cited by 19 publications

(20 citation statements)

References 25 publications

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“…ClNO is formed in the lower atmosphere by the reaction of sea salt (NaCl) with NO 2 , and in the upper troposphere‐stratosphere via surface reactions of HONO on frozen HCl. Furthermore, the photochemistry of ClNO is dominated by dissociation to NO and Cl ( 119–132 ).…”

Section: Nitrosyl Chloridementioning

confidence: 99%

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The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶

Cooksey

Reid

2004

Photochem & Photobiology

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Recent progress in understanding the phasedependent reactivity of halooxides and nitrosyl halides is outlined. Halooxide reactivity is represented by the photochemistry of chlorine dioxide (OCIO) and dichlorine monoxide (ClOCl). The gas phase photochemical dynamics of OClO are contrasted with the dynamics in condensed environments. The role of excited-state symmetry in defining the reaction dynamics and the observation of photoisomerization resulting in the production of ClOO are discussed. The current understanding of the excited-state reaction dynamics of ClOCl and evidence for photoisomerization of this species resulting in the production of ClClO are outlined. Finally, the photochemical reaction dynamics of the nitrosyl halide ClNO are presented. The main difference between the gas and condensed phase reaction dynamics of this species is that whereas photodissociation to form Cl and NO dominates the gas phase reaction dynamics, photoisomerization resulting in ClON production occurs to an appreciable extent in condensed environments. The observation of photoisomerization for OClO, ClOCl and ClNO suggests that this process is a general feature of the condensed phase reaction dynamics for smaller halooxides and nitrosyl halides. Finally, future areas for study in both halooxide and nitrosyl halide photoreactivity are outlined.

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Section: Nitrosyl Chloridementioning

confidence: 99%

“…9). Excitation into all absorption bands results in dissociation to form NO and Cl with a quantum yield approaching unity ( 119,121–126,128–132,135–140 ).…”

Section: Nitrosyl Chloridementioning

confidence: 99%

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶

Cooksey

Reid

2004

Photochem & Photobiology

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“…1 ͑The band was named before current naming conventions were established, and so the A band lies above the B, C, etc., bands in energy.͒ The A band is intense, with an absorption cross section of approximately 6.5 ϫ10 Ϫ17 cm 2 at its peak near 196 nm wavelength. It has been suggested that as many as three electronically excited states may participate in the absorption, [4][5][6] with the proportion from each state varying with wavelength within the band. It has been suggested that as many as three electronically excited states may participate in the absorption, [4][5][6] with the proportion from each state varying with wavelength within the band.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 The breadth of the band ͓ϳ5000 cm Ϫ1 full width at half maximum ͑FWHM͔͒ and absence of structure indicate rapid and direct dissociation following excitation. 7,8 Despite a large number of studies of the photofragments, [4][5][6][9][10][11][12] a complete picture of the photodissociation is still elusive. This supposition is not unequivocally established, however, and runs counter to the prediction of ab initio calculations on ClNO.…”

Section: Introductionmentioning

confidence: 99%

Resonance Raman spectroscopy in the dissociative A band of nitrosyl chloride

Mackey

Johnson

Kittrell

et al. 2001

The Journal of Chemical Physics

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Ab initio potential energy surfaces, total absorption cross sections, and product quantum state distributions for the low-lying electronic states of N 2 O Resonance Raman spectra measured for ClNO photoexcited at 212.5, 219, and 222 nm produce evidence that the strong transition at the vacuum ultraviolet end of the merged A band system dominates to wavelengths as long as 222 nm. The spectral resolution is sufficient to enable definitive assignments of excited vibrational levels in the ground electronic state, several of which have not been previously observed. A curvilinear coordinate model of the ground state potential surface around the Franck-Condon region has been constructed. This model yields vibrational eigenvalues in excellent agreement with all known transitions.

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“…35 Parallel to the richness of its UV-visible electronic structure is the variety of the dissociation dynamics and its intimate dependence on the excitation wavelength. 27,29,30,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] The photodissociation of ClNO on all these excited states can be described generally as…”

Section: Introductionmentioning

confidence: 99%

Product fine structure state populations and nonadiabatic dissociation dynamics: Cl*(2P1/2)/Cl(2P3/2) branching ratio in the visible and near ultraviolet photodissociation of nitrosyl chloride

Cao

Wang

Qian

1995

The Journal of Chemical Physics

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Articles you may be interested inPhotodissociation of alkyl iodides and CF3I at 304 nm: Relative populations of I(2 P 1/2) and I(2 P 3/2) and dynamics of curve crossing Photodissociation of hydrogen chloride at 157 and 193 nm: Angular distributions of hydrogen atoms and fine structure branching ratios of chlorine atoms in the 2 P j levels J. Chem. Phys. 97, 8210 (1992); 10.1063/1.463443Finestructure branching ratios and Doppler profiles of Cl(2 P j ) photofragments from photodissociation of the chlorine molecule near and in the ultraviolet region J. Chem. Phys. 97, 1065 (1992); 10.1063/1.463285Fine structure branching ratios and Doppler spectroscopy of chlorine atoms from the photodissociation of alkyl chlorides and chlorofluoromethanes at 157 and 193 nm Chlorine atoms in their 2 P j states were observed using resonance-enhanced multiphoton ionization and time-of-flight techniques, following the photodissociation of nitrosyl chloride at preselected wavelengths ͑i.e., 600, 562, 478, and 355 nm͒. The fine structure branching ratio and the spatial anisotropy parameter were determined. Combining these observations with results from previous studies, a complete picture about product fine structure state populations is obtained. The observed fine structure populations are explained with the aid of a new correlation diagram in the C s point group. The adiabatic, nonadiabatic, and diabatic dissociation dynamics involving several avoided crossings at large interfragment separations are discussed.

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Photodissociation of ClNO in the A band

Cited by 19 publications

References 25 publications

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶

Resonance Raman spectroscopy in the dissociative A band of nitrosyl chloride

Product fine structure state populations and nonadiabatic dissociation dynamics: Cl*(2P1/2)/Cl(2P3/2) branching ratio in the visible and near ultraviolet photodissociation of nitrosyl chloride

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Photodissociation of ClNO in the A band

Cited by 19 publications

References 25 publications

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides¶

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides¶

Resonance Raman spectroscopy in the dissociative A band of nitrosyl chloride

Product fine structure state populations and nonadiabatic dissociation dynamics: Cl*(2P1/2)/Cl(2P3/2) branching ratio in the visible and near ultraviolet photodissociation of nitrosyl chloride

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The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶

The Phase‐dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides^¶