The adsorption and thermal-decomposition of dimethylzinc on Pt(111)

Darren J Oakes; John C Wenger; Michael A Chesters; Martin R S McCoustra

doi:10.1016/0368-2048(93)80112-Y

The adsorption and thermal-decomposition of dimethylzinc on Pt(111)

Darren J Oakes, John C Wenger, Michael A Chesters, Martin R S McCoustra

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Abstract

The adsorption and thermal decomposition of dimethylzinc (DMZ) on Pt(lll) in the temperature range 100-400 K has been investigated by refection-absorption infrared spectroscopy (RAIRS). At 100 K and low exposures, partial decomposition occurs and evidence for the CH3Zn fragment is obtained. Further exposure results in non-dissociative adsorption of DMZ with the molecular axis oriented parallel to the surface. Adsorption at 200 K initially results in complete dissociation as evinced by the detection of methyl groups bonded only to platinum. However at higher exposures, the CH3Zn species appears to displace the surface methyl groups. Measurements indicate that CH3Zn is stable to at least 350 K. Low DMZ exposures at 400 K lead to the formation of ethylidyne which also appears to be displaced at higher exposures.

Original language	English
Pages (from-to)	477-482
Number of pages	6
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	64-65
DOIs	https://doi.org/10.1016/0368-2048(93)80112-Y
Publication status	Published - 12 Dec 1993

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title = "The adsorption and thermal-decomposition of dimethylzinc on Pt(111)",

abstract = "The adsorption and thermal decomposition of dimethylzinc (DMZ) on Pt(lll) in the temperature range 100-400 K has been investigated by refection-absorption infrared spectroscopy (RAIRS). At 100 K and low exposures, partial decomposition occurs and evidence for the CH3Zn fragment is obtained. Further exposure results in non-dissociative adsorption of DMZ with the molecular axis oriented parallel to the surface. Adsorption at 200 K initially results in complete dissociation as evinced by the detection of methyl groups bonded only to platinum. However at higher exposures, the CH3Zn species appears to displace the surface methyl groups. Measurements indicate that CH3Zn is stable to at least 350 K. Low DMZ exposures at 400 K lead to the formation of ethylidyne which also appears to be displaced at higher exposures.",

author = "Oakes, {Darren J} and Wenger, {John C} and Chesters, {Michael A} and McCoustra, {Martin R S}",

note = "7th International Conference on Vibration of Surfaces, GENOA, ITALY, JUN 14-17, 1993",

year = "1993",

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doi = "10.1016/0368-2048(93)80112-Y",

language = "English",

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pages = "477--482",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier",

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TY - JOUR

T1 - The adsorption and thermal-decomposition of dimethylzinc on Pt(111)

AU - Oakes, Darren J

AU - Wenger, John C

AU - Chesters, Michael A

AU - McCoustra, Martin R S

N1 - 7th International Conference on Vibration of Surfaces, GENOA, ITALY, JUN 14-17, 1993

PY - 1993/12/12

Y1 - 1993/12/12

N2 - The adsorption and thermal decomposition of dimethylzinc (DMZ) on Pt(lll) in the temperature range 100-400 K has been investigated by refection-absorption infrared spectroscopy (RAIRS). At 100 K and low exposures, partial decomposition occurs and evidence for the CH3Zn fragment is obtained. Further exposure results in non-dissociative adsorption of DMZ with the molecular axis oriented parallel to the surface. Adsorption at 200 K initially results in complete dissociation as evinced by the detection of methyl groups bonded only to platinum. However at higher exposures, the CH3Zn species appears to displace the surface methyl groups. Measurements indicate that CH3Zn is stable to at least 350 K. Low DMZ exposures at 400 K lead to the formation of ethylidyne which also appears to be displaced at higher exposures.

AB - The adsorption and thermal decomposition of dimethylzinc (DMZ) on Pt(lll) in the temperature range 100-400 K has been investigated by refection-absorption infrared spectroscopy (RAIRS). At 100 K and low exposures, partial decomposition occurs and evidence for the CH3Zn fragment is obtained. Further exposure results in non-dissociative adsorption of DMZ with the molecular axis oriented parallel to the surface. Adsorption at 200 K initially results in complete dissociation as evinced by the detection of methyl groups bonded only to platinum. However at higher exposures, the CH3Zn species appears to displace the surface methyl groups. Measurements indicate that CH3Zn is stable to at least 350 K. Low DMZ exposures at 400 K lead to the formation of ethylidyne which also appears to be displaced at higher exposures.

U2 - 10.1016/0368-2048(93)80112-Y

DO - 10.1016/0368-2048(93)80112-Y

M3 - Article

SN - 0368-2048

VL - 64-65

SP - 477

EP - 482

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

The adsorption and thermal-decomposition of dimethylzinc on Pt(111)

Abstract

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