Infrared photofragmentation spectra of C2H4·(NO)n+ cluster ions

Mouhandes, A.; Stace, A. J.

doi:10.1016/s0168-1176(96)04450-3

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…As a result, the sensitivity of high performance mass spectrometry can be exploited for deriving the infrared spectrum of mass-selected molecular ions by monitoring the fragmentation yield as a function of the wavelength. It has been realized early that fragmentation of trapped ions could be induced by multiple photon infrared absorption (Woodin, Bomse, & Beauchamp, 1978), but infrared spectroscopic investigations were limited to the small tuning range of CO 2 lasers (Woodward et al, 1993;Winkel et al, 1995;Mouhandes & Stace, 1996), until 2000 when the first midinfrared spectrum of mass-selected molecular ions could be recorded (Oomens et al, 2000). These experiments were carried out using an infrared free electron laser (FEL).…”

Section: Introductionmentioning

confidence: 99%

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

MacAleese

Maı̂tre

2007

Mass Spectrometry Reviews

276

243

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Gas phase mid-infrared spectroscopy of molecular ions can nowadays be performed with high performance mass spectrometers coupled to free electron lasers (FEL). The wide and continuous tunability of highly intense FELs in the mid-infrared region can be exploited for performing infrared multiple photon dissociation (IRMPD) spectroscopy of molecular ions. This review will focus on gas phase IRMPD spectroscopic investigations aiming at probing the structure and the reactivity of transition metal complexes. The performance of infrared spectroscopy for characterizing the coordination mode of polydentate ligands and the spin state of the metal will be illustrated. Infrared spectroscopy has also been exploited to probe the reactivity of metal complexes, and a special attention will be given to the infrared spectroscopy of reactive intermediates. # 2007 Wiley Periodicals, Inc., Mass Spec Rev 26:583-605, 2007

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Section: Introductionmentioning

confidence: 99%

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

MacAleese

Maı̂tre

2007

Mass Spectrometry Reviews

276

243

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“…For positively charged ions the smallest even electron cluster is (NO) 3 1 and there exists extensive circumstantial evidence to suggest that this ion is a stable unit that probably exists as a singlet in its electronic ground state. 5,11,15,16 Further support for this suggestion will be provided from the experiments discussed below.…”

Section: Introductionmentioning

confidence: 91%

“…In contrast, similar experiments performed on C 2 H 4 Á (NO) n 1 cluster ions provided good evidence of NO pairing. 15 To complement the above experiments, it has recently been observed that (NO) n 1 cluster ions exhibit a very strong infrared transition within the wavelength range of a CO laser. 14,27 Smaller members of the pure (NO) n 1 series are quite strongly bound, 1,2,13 therefore their formation by electron impact from neutral clusters results in a significant degree of internal excitation (re 0 , the minimum binding energy).…”

Section: Introductionmentioning

confidence: 92%

“…(NO) 1 3 . X cluster ions Although a number of earlier experiments have noted the particularly stable nature of the (NO) 1 3 ion, 5,11,15,16 its detailed structure is still the subject of some debate. Previous infrared photodissociation experiments involving pure NO cluster ions concluded that the trimer ion acted as a core structure, 27 which was only slightly perturbed by the presence of additional NO molecules.…”

Section: Cluster Ionsmentioning

confidence: 99%

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Infrared photodissociation of (NO)_n⁺·X cluster ions (n ≤ 5)

Odeneye

Stace

2005

Phys. Chem. Chem. Phys.

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Measurements of the infrared photodissociation pathways and spectra of size-selected (NO)n +X complexes, for n in the range 2-5, have been carried out using a line-tuneable CO laser (photon energy 1600-1800 cm(-1)). X is one of Ar, Kr, Xe, O2, CO2, CH3Cl, CF4 or SF6. Two photoinduced fragmentation pathways have been monitored as a function of radiation wavelength: the loss of NO and the loss of X. The photofragmentation patterns and branching ratios are influenced by two factors: (i) the value of n; and to a lesser degree, (ii) the nature of the atom/molecule, X. A limited number of IR spectra have been recorded for the dimer, (NO)2+, in association with the rare gas atoms and CF4; for the remaining examples, the trimer, (NO)3+, appears to act as a stable core with a comparatively large infrared absorption cross-section at ca. 1720 cm(-1).

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“…However, to the best of our knowledge, there has been only one previous study of heterogeneous NO−ethene clusters. Mouhandes and Stace used an IR laser to photofragment [(C 2 H 4 )(NO) n ] + cluster ions. They noted the loss of C 2 H 4 , NO, and 2NO and the tendency of decay channels to form even-electron ions.…”

Section: Introductionmentioning

confidence: 99%

Photochemical Generation of Methane within NO−Ethene Heteroclusters

2001

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Multiphoton ionization time-of-flight mass spectroscopy has been used to study heterogeneous cluster ions containing NO and ethene. As previously noted in the literature for other NO clusters, NO−ethene heterogeneous cluster ions show a tendency to form even-electron species. In addition to this effect, we also observe a number of ion−molecule reactions that occur within the heterogeneous clusters. These reactions lead to cluster ion series which contain new molecular species. Deuterium isotope experiments explicitly indicate that both CH4 and NO2 are formed as cluster ion products. We speculate that the methane formation occurs via this reaction within the photoionized cluster: {C2H4} m +1{NO} n +1{NO+} → {C2H4} m {NO} n {CH4 +} + N2O + CO.

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Infrared photofragmentation spectra of C2H4·(NO)n+ cluster ions

Cited by 7 publications

References 19 publications

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

Infrared photodissociation of (NO)_n⁺·X cluster ions (n ≤ 5)

Photochemical Generation of Methane within NO−Ethene Heteroclusters

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Infrared photofragmentation spectra of C2H4·(NO)n+ cluster ions

Cited by 7 publications

References 19 publications

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

Infrared spectroscopy of organometallic ions in the gas phase: From model to real world complexes

Infrared photodissociation of (NO)n+·X cluster ions (n ≤ 5)

Photochemical Generation of Methane within NO−Ethene Heteroclusters

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Product

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Infrared photodissociation of (NO)_n⁺·X cluster ions (n ≤ 5)