Spectroscopic investigation of zinc-containing organometallic radicals prepared using a pulsed electrical discharge nozzle

Ian M. Povey; Andrew J. Bezant; Gary K. Corlett; Andrew M. Ellis

doi:10.1021/j100092a007

Spectroscopic investigation of zinc-containing organometallic radicals prepared using a pulsed electrical discharge nozzle

Ian M. Povey
, Andrew J. Bezant
, Gary K. Corlett
, Andrew M. Ellis

University of Leicester

Research output: Contribution to journal › Article › peer-review

Abstract

A pulsed electrical discharge source has been used to obtain jet-cooled laser excitation spectra of organometallic free radicals. High-voltage (600-1200 V) discharge across a Zn(CH₃)₂/inert gas mixture allowed a strong LIF signal of the ZnCH₃ radical to be obtained. Extensive fragmentation to form molecules such as C₂ and C₃ was not observed, indicating that a pulsed discharge source can be a relatively clean source of organometallic intermediates. Interestingly, a weak ZnCH₃ spectrum could also be obtained by discharge of Ar/Al(CH₃)₃ across zinc electrodes at voltages exceeding 1200 V. In this case, the ZnCH₃ was formed by reaction between sputtered zinc atoms from the electrodes and methyl radicals produced by fragmentation of aluminum trimethyl. A pulsed discharge across Zn(C₂H₅)₂/Ar produced a new LIF spectrum which was attributed to the zinc monoethyl radical, ZiC₂H₅. This is the first report of a spectrum of this radical.

Original language	English
Pages (from-to)	10427-10431
Number of pages	5
Journal	Journal of Physical Chemistry
Volume	98
Issue number	41
DOIs	https://doi.org/10.1021/j100092a007
Publication status	Published - 1994
Externally published	Yes

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title = "Spectroscopic investigation of zinc-containing organometallic radicals prepared using a pulsed electrical discharge nozzle",

abstract = "A pulsed electrical discharge source has been used to obtain jet-cooled laser excitation spectra of organometallic free radicals. High-voltage (600-1200 V) discharge across a Zn(CH3)2/inert gas mixture allowed a strong LIF signal of the ZnCH3 radical to be obtained. Extensive fragmentation to form molecules such as C2 and C3 was not observed, indicating that a pulsed discharge source can be a relatively clean source of organometallic intermediates. Interestingly, a weak ZnCH3 spectrum could also be obtained by discharge of Ar/Al(CH3)3 across zinc electrodes at voltages exceeding 1200 V. In this case, the ZnCH3 was formed by reaction between sputtered zinc atoms from the electrodes and methyl radicals produced by fragmentation of aluminum trimethyl. A pulsed discharge across Zn(C2H5)2/Ar produced a new LIF spectrum which was attributed to the zinc monoethyl radical, ZiC2H5. This is the first report of a spectrum of this radical.",

author = "Povey, \{Ian M.\} and Bezant, \{Andrew J.\} and Corlett, \{Gary K.\} and Ellis, \{Andrew M.\}",

year = "1994",

doi = "10.1021/j100092a007",

language = "English",

volume = "98",

pages = "10427--10431",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "41",

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TY - JOUR

T1 - Spectroscopic investigation of zinc-containing organometallic radicals prepared using a pulsed electrical discharge nozzle

AU - Povey, Ian M.

AU - Bezant, Andrew J.

AU - Corlett, Gary K.

AU - Ellis, Andrew M.

PY - 1994

Y1 - 1994

N2 - A pulsed electrical discharge source has been used to obtain jet-cooled laser excitation spectra of organometallic free radicals. High-voltage (600-1200 V) discharge across a Zn(CH3)2/inert gas mixture allowed a strong LIF signal of the ZnCH3 radical to be obtained. Extensive fragmentation to form molecules such as C2 and C3 was not observed, indicating that a pulsed discharge source can be a relatively clean source of organometallic intermediates. Interestingly, a weak ZnCH3 spectrum could also be obtained by discharge of Ar/Al(CH3)3 across zinc electrodes at voltages exceeding 1200 V. In this case, the ZnCH3 was formed by reaction between sputtered zinc atoms from the electrodes and methyl radicals produced by fragmentation of aluminum trimethyl. A pulsed discharge across Zn(C2H5)2/Ar produced a new LIF spectrum which was attributed to the zinc monoethyl radical, ZiC2H5. This is the first report of a spectrum of this radical.

AB - A pulsed electrical discharge source has been used to obtain jet-cooled laser excitation spectra of organometallic free radicals. High-voltage (600-1200 V) discharge across a Zn(CH3)2/inert gas mixture allowed a strong LIF signal of the ZnCH3 radical to be obtained. Extensive fragmentation to form molecules such as C2 and C3 was not observed, indicating that a pulsed discharge source can be a relatively clean source of organometallic intermediates. Interestingly, a weak ZnCH3 spectrum could also be obtained by discharge of Ar/Al(CH3)3 across zinc electrodes at voltages exceeding 1200 V. In this case, the ZnCH3 was formed by reaction between sputtered zinc atoms from the electrodes and methyl radicals produced by fragmentation of aluminum trimethyl. A pulsed discharge across Zn(C2H5)2/Ar produced a new LIF spectrum which was attributed to the zinc monoethyl radical, ZiC2H5. This is the first report of a spectrum of this radical.

UR - https://www.scopus.com/pages/publications/33645938546

U2 - 10.1021/j100092a007

DO - 10.1021/j100092a007

M3 - Article

AN - SCOPUS:33645938546

SN - 0022-3654

VL - 98

SP - 10427

EP - 10431

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 41

ER -

Spectroscopic investigation of zinc-containing organometallic radicals prepared using a pulsed electrical discharge nozzle

Abstract

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