Infrared photodissociation of size-selected acetonitrile clusters

Buck, U.; Gu, Xiaohui; Krohne, R.; Lauenstein, Ch.

doi:10.1016/0009-2614(90)85340-i

Cited by 25 publications

(6 citation statements)

References 24 publications

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“…These systems were chosen, since the free clusters were investigated quite thoroughly in our laboratory using the atomic deflection method for size selection. [19][20][21][22] In the case of methanol, the experimental results for free clusters 19,20 are in complete agreement with theoretical predictions based on a new, reliable interaction potential. 23 The structures are, aside from the dimer with its linear hydrogen bond, rings corresponding to the lowest energy configurations from nϭ3 to nϭ6.…”

Section: Introductionsupporting

confidence: 60%

“…23 The structures are, aside from the dimer with its linear hydrogen bond, rings corresponding to the lowest energy configurations from nϭ3 to nϭ6. In the case of free acetonitrile clusters, recent calculations 24 demonstrated that most of the experimental results 21,22 could be reproduced by the lowest energy configurations. This includes the low intensity dimer spectrum and the spectra from nϭ4 to nϭ6.…”

Section: Introductionmentioning

confidence: 99%

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Vibrational spectroscopy of methanol and acetonitrile clusters in cold helium droplets

Behrens¹,

Fröchtenicht²,

Hartmann³

et al. 1999

The Journal of Chemical Physics

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Structure and hydration of the C4H4 •+ ion formed by electron impact ionization of acetylene clustersInfrared molecular beam depletion spectroscopy of small methanol and acetonitrile clusters embedded in large helium clusters has been studied in the spectral region of the CO stretch and the CH 3 rock mode from 1023 to 1059 cm Ϫ1 . The results are compared with the experimental spectra of the corresponding free clusters generated in adiabatic expansions and calculations based on density functional theory or empirical potential models. For methanol clusters, the two types of experimental results are the same for the dimer and trimer structure. Different isomers are found in cold helium for the tetramer and pentamer, namely a monomer and dimer attached to a cyclic trimer. For acetonitrile clusters in helium, aside from the dimer, different structures are observed. The spectra from the trimer to the hexamer are dominated by structures which contain the antiparallel dimer as building block with D 2d symmetry for the tetramer. They do not correspond to the minimum configurations observed for the free clusters. The fragmentation of the two cluster groups in helium droplets by electron impact ionization is discussed.

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Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Vibrational spectroscopy of methanol and acetonitrile clusters in cold helium droplets

Behrens¹,

Fröchtenicht²,

Hartmann³

et al. 1999

The Journal of Chemical Physics

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“…42 Acetonitrile clusters have already been the subject of both experimental and theoretical studies. [43][44][45][46][47][48][49][50][51][52][53] Because of the large dipole moment of acetonitrile ͑3.9 D͒, the interactions within these clusters are dominated essentially by dipole-dipole forces, and the lowest energy structures reflect the favorable antiparallel pairing of the molecular dipoles. Molecular dynamics ͑MD͒ and Monte Carlo ͑MC͒ studies have shown that the antiparallel pairing of the dipoles may lead to rigid solidlike structures of the n-even clusters with melting transition temperatures considerably higher than those of the n-odd clusters.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of benzene (acetonitrile)n clusters, n=1–4

El‐Shall¹,

Daly²,

Wright³

2002

The Journal of Chemical Physics

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“…The experimental evidence is provided by the appearance of the progression of cluster mass peaks for the ions of the type (CHI-CN),H+ (eq 5a). Buck et al2z (see also ref 23) derived the fragmentation channels presented in eqs 5a-d. These results were based on mass spectroscopic studies of mass selected CHI-CN cluster beams after electron impact ionization.…”

Section: Discussionmentioning

confidence: 99%

Matrix isolation of acetonitrile clusters from a pulsed supersonic beam

Knözinger¹,

Beichert²,

Hermeling³

et al. 1993

J. Phys. Chem.

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Acetonitrile clusters (CH$N),, different from the antiparallel dimer have so far not been observed in cryogenic matrices. The combination of molecular beam and matrix isolation technique enabled us to evidence the presence of larger clusters in Ar matrix. In these experiments the task of the molecular beam is the production of the clusters via an adiabatic expansion under properly selected conditions. On the other hand, the matrix is needed for the conservation of the clusters. essentially diagnostic relevance.

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Infrared photodissociation of size-selected acetonitrile clusters

Cited by 25 publications

References 24 publications

Vibrational spectroscopy of methanol and acetonitrile clusters in cold helium droplets

Vibrational spectroscopy of methanol and acetonitrile clusters in cold helium droplets

Experimental and theoretical study of benzene (acetonitrile)n clusters, n=1–4

Matrix isolation of acetonitrile clusters from a pulsed supersonic beam

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