Výsledky vyhledávání - "Detlev Bruch"

Electron impact and multiphoton ionization and fragmentation of molybdenum-cyclopentadienyl-dicarbonyl-nitrosyl at 351, 248 and 193 nm

Autor: Joachim Opitz, Günther von Bünau, Detlev Bruch

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 171:147-157

Electron impact (EI) and multiphoton ionization (MPI) mass spectra of CpMo(CO)2NO (Cp  C5H5, cyclopentadienyl ligand) are reported. The ionization energy (8.20 eV) and appearance energies of major fragment ions are determined. Ion dissociation ene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20460c38269c8012cc82833a7e23b12b
https://doi.org/10.1016/s0168-1176(97)00140-7

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Electron impact and multiphoton ionization and fragmentation of dicarbonyl cyclopentadienyl methyl iron and pentamethylcyclopentadienyl dicarbonyl methyl iron

Autor: Günther von Bünau, Detlev Bruch, Wolfram Schindler, Horst Kisch

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 148:105-122

Electron impact (EI) and multiphoton ionization (MPI) mass spectra of the title compounds CpFe(CO)2CH3 (1) and ∗CpFe(CO)2CH3 (2) are reported. Under EI molecular ions and large fragment ions are formed from both compounds. Direct analysis of metast

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd017faeb84bedd711de644a319f8302
https://doi.org/10.1016/0168-1176(95)04235-d

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Multiphoton excitation of tricarbonyl—cyclooctatetraene—iron. Wavelength-dependent competition between ionization and dissociation

Autor: Günther von Bünau, Detlev Bruch, Joachim Opitz

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 135:181-194

Mass spectra of (cot)Fe(CO)3 (cot = C8H8, cyclooctatetraene) were recorded on multiphoton ionization at 351, 308, 248 and 193 nm, and compared with electron impact ionization. The spectra at 351 and 308 nm are, independent of the laser intensity, dom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a9877b62b6a45efed40baf41258ceaf
https://doi.org/10.1016/0168-1176(94)04004-4

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Nanosecond laser excitation of benzene-chromium-tricarbonyl and dibenzene-chromium at 351, 248 and 193 nm. Wavelength-dependent competition between ionization and dissociation

Autor: Joachim Opitz, Detlev Bruch, Günther von Bünau

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 125:215-228

Laser ionization of benzene-chromium-tricarbonyl C6H6Cr(CO)3 and dibenzene-chromium (C6H6)2Cr is reported for excitation at 193, 248, and 351 nm. In the case of C6H6Cr(CO)3 at 193 nm, molecular ions are not observed. The ion with the highest mass is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a919d8391adf52a1739661296566b5f
https://doi.org/10.1016/0168-1176(93)80044-f

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Multiphoton excitation of ferrocene and vanadocene at 351 nm in comparison with 248 and 193 nm. Wavelength dependent competition between ionization and dissociation

Autor: Detlev Bruch, Joachim Opitz, Günther von Bünau

Publikováno v: Organic Mass Spectrometry. 28:405-411

Multiphoton ionization of ferrocene and vanadocene upon nanosecond laser excitation at 351 nm is reported in comparison with results at 248 and 193 nm. A similar behaviour was found for both compounds at each wavelength. The excitation and fragmentat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::886417952894962b5797ae867ccc9108
https://doi.org/10.1002/oms.1210280424

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Multiphoton and electron impact ionization of manganese decacarbonyl Mn2(CO)10 at 351, 248 and 193 nm. Wavelength dependent competition between ionization and dissociation

Autor: Detlev Bruch, Joachim Opitz

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 124:157-169

Multiphoton ionization and dissociation of Mn2(CO)10 is reported at 351, 248 and 193 nm in comparison with electron impact ionization. In the case of electron impact ionization, two decomposition pathways have been observed. The first is dominated by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bbc372be69cd4ea7a38c544fc04981e
https://doi.org/10.1016/0168-1176(93)80006-z

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Multiphoton and electron impact ionization of azirines. Part II: 2,3-diphenyl-1-azirine at 248 nm and 193 nm

Autor: Joachim Opitz, Klaus Banert, Detlev Bruch, Günther von Bünau

Publikováno v: Organic Mass Spectrometry. 27:1105-1113

Multiphoton ionization of 2,3-diphenyl-1-azirine Is reported for nanosecond laser excitation at 248 and 193 nm and compared with electron impact ionization. The dependence of the ion intensity on the laser intensity shows that the formation of the pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b9ae57492e8db60616cbd19f3a145c6
https://doi.org/10.1002/oms.1210271021

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Multiphoton and electron impact ionization of azirines: 3-methyl-2-phenyl-1-azirine at λ = 248 nm and 193 nm

Autor: Klaus Banert, Detlev Bruch, Joachim Opitz

Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 115:53-66

Multiphoton ionization of 3-methyl-2-phenyl-1-azirine is reported upon nanosecond laser excitation with λ = 248 nm and 193 nm in comparison with electron impact ionization. The number of absorbed photons per molecule for the molecular ion and promin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::129fd5f1228af654c9ef7fd8ead535a9
https://doi.org/10.1016/0168-1176(92)85031-t

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Electron impact and multiphoton ionization at 351 nm, 248 nm and 193 nm of the dinuclear π-complexes: di-µ-carbonyl-biscyclopentadienyl-di-nickel, di-µ-carbonyl-dicarbonyl-biscyclopentadienyl-di-iron and di-µ-nitrosyl-bis(tetraisopropylcyclopentadienyl)-di-cobalt

Autor: Joachim Opitz, Günther von Bünau, Helmut Sitzmann, Peter Härter, Detlev Bruch

Publikováno v: European Journal of Mass Spectrometry. 4:93

Electron impact (EI) and nanosecond multiphoton ionization (MPI), at 351, 248 and 193 nm, of the title compounds, Cp2Ni2(CO)2 [1], Cp2Fe2(CO)4 [2] and (Cp-i4)2Co2(NO)2 [3], is reported (Cp = cyclopentadienyl; Cp-i4 = tetraisopropylcyclopentadienyl).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea360d710d77b4633fa2bb02ead1c81f
https://doi.org/10.1255/ejms.194

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