Observation of cis-2-butene molecule on Pd(1 1 0) by cryogenic STM: Site determination using tunneling-current-induced rotation

Y. Sainoo; Y. Kim; T. Komeda; Maki Kawai; H. Shigekawa

doi:10.1016/S0039-6028(03)00564-8

Observation of cis-2-butene molecule on Pd(1 1 0) by cryogenic STM: Site determination using tunneling-current-induced rotation

Y. Sainoo, Y. Kim, T. Komeda, Maki Kawai, H. Shigekawa

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

33 Citations (Scopus)

Abstract

We have investigated the bonding configuration of an isolated cis-2-butene molecule (CH₃-CH=CH-CH₃) on the Pd(110) surface using a cryogenic STM at the sample temperature of 4.7 K. For the precise determination of the bonding site of the molecule, we utilize a novel method of rotating the molecule by injecting tunneling electrons into the molecule. We have observed the rotation of the molecule around the terminal site of a single Pd atom with hopping between four equivalent bonding sites when tunneling electrons with the energy of 170 meV were dosed. The bonding between the cis-2-molecule and the Pd(110) surface is considerably through π-bonding at the carbon double-bond, which makes bonding on the terminal site favorable. However, the analysis of the images of rotating molecule reveals that the C=C is shifted from the terminal site and located at the off-symmetry position.

Original language	English
Pages (from-to)	L403-L407
Journal	Surface Science
Volume	536
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(03)00564-8
Publication status	Published - 2003 Jun 20
Externally published	Yes

Keywords

Alkenes
Palladium
Scanning tunneling microscopy
Surface electronic phenomena (work function, surface potential, surface states, etc.)
Tunneling

ASJC Scopus subject areas

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

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title = "Observation of cis-2-butene molecule on Pd(1 1 0) by cryogenic STM: Site determination using tunneling-current-induced rotation",

abstract = "We have investigated the bonding configuration of an isolated cis-2-butene molecule (CH3-CH=CH-CH3) on the Pd(110) surface using a cryogenic STM at the sample temperature of 4.7 K. For the precise determination of the bonding site of the molecule, we utilize a novel method of rotating the molecule by injecting tunneling electrons into the molecule. We have observed the rotation of the molecule around the terminal site of a single Pd atom with hopping between four equivalent bonding sites when tunneling electrons with the energy of 170 meV were dosed. The bonding between the cis-2-molecule and the Pd(110) surface is considerably through π-bonding at the carbon double-bond, which makes bonding on the terminal site favorable. However, the analysis of the images of rotating molecule reveals that the C=C is shifted from the terminal site and located at the off-symmetry position.",

keywords = "Alkenes, Palladium, Scanning tunneling microscopy, Surface electronic phenomena (work function, surface potential, surface states, etc.), Tunneling",

author = "Y. Sainoo and Y. Kim and T. Komeda and Maki Kawai and H. Shigekawa",

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T2 - Site determination using tunneling-current-induced rotation

AU - Sainoo, Y.

AU - Kim, Y.

AU - Komeda, T.

AU - Kawai, Maki

AU - Shigekawa, H.

PY - 2003/6/20

Y1 - 2003/6/20

N2 - We have investigated the bonding configuration of an isolated cis-2-butene molecule (CH3-CH=CH-CH3) on the Pd(110) surface using a cryogenic STM at the sample temperature of 4.7 K. For the precise determination of the bonding site of the molecule, we utilize a novel method of rotating the molecule by injecting tunneling electrons into the molecule. We have observed the rotation of the molecule around the terminal site of a single Pd atom with hopping between four equivalent bonding sites when tunneling electrons with the energy of 170 meV were dosed. The bonding between the cis-2-molecule and the Pd(110) surface is considerably through π-bonding at the carbon double-bond, which makes bonding on the terminal site favorable. However, the analysis of the images of rotating molecule reveals that the C=C is shifted from the terminal site and located at the off-symmetry position.

AB - We have investigated the bonding configuration of an isolated cis-2-butene molecule (CH3-CH=CH-CH3) on the Pd(110) surface using a cryogenic STM at the sample temperature of 4.7 K. For the precise determination of the bonding site of the molecule, we utilize a novel method of rotating the molecule by injecting tunneling electrons into the molecule. We have observed the rotation of the molecule around the terminal site of a single Pd atom with hopping between four equivalent bonding sites when tunneling electrons with the energy of 170 meV were dosed. The bonding between the cis-2-molecule and the Pd(110) surface is considerably through π-bonding at the carbon double-bond, which makes bonding on the terminal site favorable. However, the analysis of the images of rotating molecule reveals that the C=C is shifted from the terminal site and located at the off-symmetry position.

KW - Alkenes

KW - Palladium

KW - Scanning tunneling microscopy

KW - Surface electronic phenomena (work function, surface potential, surface states, etc.)

KW - Tunneling

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VL - 536

SP - L403-L407

JO - Surface Science

JF - Surface Science

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Observation of cis-2-butene molecule on Pd(1 1 0) by cryogenic STM: Site determination using tunneling-current-induced rotation

Abstract

Keywords

ASJC Scopus subject areas

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