Structure of disordered ethylene adsorbed on Pt(111) analyzed by diffuse LEED: Asymmetrical di-σ bonding favored

R. Döll; C. A. Gerken; M. A. Van Hove; G. A. Somorjai

doi:10.1016/S0039-6028(96)01227-7

Structure of disordered ethylene adsorbed on Pt(111) analyzed by diffuse LEED: Asymmetrical di-σ bonding favored

R. Döll, C. A. Gerken, M. A. Van Hove, G. A. Somorjai

Research output: Contribution to journal › Journal article › peer-review

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Abstract

The adsorption structure of ethylene on Pt(111) at 200 K is studied by means of diffuse low-energy electron diffraction (DLEED), analyzing diffuse intensity versus energy, DI(E), curves. The data favor a mixed occupation of two similar sites with the centers of the C-C bonds above both fcc and hcp sites and very similar local structures. In each case, the best-fit adsorption geometry is asymmetrical between the two carbon atoms, the molecular axes likely being tilted with respect to the surface plane by about 22°. Substrate relaxation is undetectable.

Original language	English
Pages (from-to)	151-161
Number of pages	11
Journal	Surface Science
Volume	374
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(96)01227-7
Publication status	Published - 10 Mar 1997

Scopus Subject Areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

User-Defined Keywords

Alkenes
Electron-solid diffraction
Low energy electron diffraction (LEED)
Low index single crystal surfaces
Platinum
Surface structure

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10.1016/S0039-6028(96)01227-7

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title = "Structure of disordered ethylene adsorbed on Pt(111) analyzed by diffuse LEED: Asymmetrical di-σ bonding favored",

abstract = "The adsorption structure of ethylene on Pt(111) at 200 K is studied by means of diffuse low-energy electron diffraction (DLEED), analyzing diffuse intensity versus energy, DI(E), curves. The data favor a mixed occupation of two similar sites with the centers of the C-C bonds above both fcc and hcp sites and very similar local structures. In each case, the best-fit adsorption geometry is asymmetrical between the two carbon atoms, the molecular axes likely being tilted with respect to the surface plane by about 22°. Substrate relaxation is undetectable.",

keywords = "Alkenes, Electron-solid diffraction, Low energy electron diffraction (LEED), Low index single crystal surfaces, Platinum, Surface structure",

author = "R. D{\"o}ll and Gerken, {C. A.} and {Van Hove}, {M. A.} and Somorjai, {G. A.}",

note = "Funding Information: The authors would like to thank P. Cremer for useful discussions. R.D. gratefully acknowledges financial support by the Deutsche Forschungs-gemeinschaft. This work was supported in part by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division of the US Department of Energy under Contract No. DE-AC03-76SF00098.",

year = "1997",

month = mar,

day = "10",

doi = "10.1016/S0039-6028(96)01227-7",

language = "English",

volume = "374",

pages = "151--161",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Structure of disordered ethylene adsorbed on Pt(111) analyzed by diffuse LEED

T2 - Asymmetrical di-σ bonding favored

AU - Döll, R.

AU - Gerken, C. A.

AU - Van Hove, M. A.

AU - Somorjai, G. A.

N1 - Funding Information: The authors would like to thank P. Cremer for useful discussions. R.D. gratefully acknowledges financial support by the Deutsche Forschungs-gemeinschaft. This work was supported in part by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division of the US Department of Energy under Contract No. DE-AC03-76SF00098.

PY - 1997/3/10

Y1 - 1997/3/10

N2 - The adsorption structure of ethylene on Pt(111) at 200 K is studied by means of diffuse low-energy electron diffraction (DLEED), analyzing diffuse intensity versus energy, DI(E), curves. The data favor a mixed occupation of two similar sites with the centers of the C-C bonds above both fcc and hcp sites and very similar local structures. In each case, the best-fit adsorption geometry is asymmetrical between the two carbon atoms, the molecular axes likely being tilted with respect to the surface plane by about 22°. Substrate relaxation is undetectable.

AB - The adsorption structure of ethylene on Pt(111) at 200 K is studied by means of diffuse low-energy electron diffraction (DLEED), analyzing diffuse intensity versus energy, DI(E), curves. The data favor a mixed occupation of two similar sites with the centers of the C-C bonds above both fcc and hcp sites and very similar local structures. In each case, the best-fit adsorption geometry is asymmetrical between the two carbon atoms, the molecular axes likely being tilted with respect to the surface plane by about 22°. Substrate relaxation is undetectable.

KW - Alkenes

KW - Electron-solid diffraction

KW - Low energy electron diffraction (LEED)

KW - Low index single crystal surfaces

KW - Platinum

KW - Surface structure

UR - http://www.scopus.com/inward/record.url?scp=0031096292&partnerID=8YFLogxK

U2 - 10.1016/S0039-6028(96)01227-7

DO - 10.1016/S0039-6028(96)01227-7

M3 - Journal article

AN - SCOPUS:0031096292

SN - 0039-6028

VL - 374

SP - 151

EP - 161

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Structure of disordered ethylene adsorbed on Pt(111) analyzed by diffuse LEED: Asymmetrical di-σ bonding favored

Abstract

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