Determination of the local structure of glycine adsorbed on Cu(110)

被引:133
作者
Booth, NA
Woodruff, DP [1 ]
Schaff, O
Giessel, T
Lindsay, R
Baumgartel, P
Bradshaw, AM
机构
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[2] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
基金
英国工程与自然科学研究理事会;
关键词
chemisorption; copper; glycine; photoelectron diffraction; surface structure;
D O I
10.1016/S0039-6028(97)00742-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Scanned-energy mode N ls and O ls photoelectron diffraction has been used to determine the local geometry of glycine adsorbed on Cu(110) in an ordered (3x2) phase. The results are consistent with a molecular geometry in which the C-C axis lies approximately parallel to the surface and the molecule bonds across a pair of [<1(1)over bar>0] Cu surface rows through the two oxygen atoms of the carboxyl group and the N atom of the amino group. The N atom is displaced by 0.24+/-0.10 Angstrom off an atop site along the [<1(1)over bar>0] rows with a Cu-N nearest-neighbour distance of 2.04+/-0.02 Angstrom. The carboxyl bonds to two Cu atoms in a [<1(1)over bar>0] row, with the O atoms displaced 0.80+/-0.07 Angstrom from atop in [001] towards the amino group with a Cu-O nearest-neighbour bond length of 2.03+/-0.03 Angstrom and a resulting tilt of the O-Cu bond relative to the surface normal of 23+/-2. A specific structural model comprising two molecular moieties per unit mesh which has the space group plgl, consistent with the qualitative LEED observations, is proposed on the basis of these data. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:258 / 269
页数:12
相关论文
共 23 条
  • [1] BARLOW S, UNPUB
  • [2] Structure determination of ammonia on Cu(110) - a low-symmetry adsorption site
    Booth, NA
    Davis, R
    Toomes, R
    Woodruff, DP
    Hirschmugl, C
    Schindler, KM
    Schaff, O
    Fernandez, V
    Theobald, A
    Hofmann, P
    Lindsay, R
    Giessel, T
    Baumgartel, P
    Bradshaw, AM
    [J]. SURFACE SCIENCE, 1997, 387 (1-3) : 152 - 159
  • [3] A HIGH-FLUX TOROIDAL GRATING MONOCHROMATOR FOR THE SOFT-X-RAY REGION
    DIETZ, E
    BRAUN, W
    BRADSHAW, AM
    JOHNSON, RL
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1985, 239 (02) : 359 - 366
  • [4] A PHOTOELECTRON DIFFRACTION STUDY OF THE STRUCTURE OF PF3 ADSORBED ON NI(111)
    DIPPEL, R
    WEISS, KU
    SCHINDLER, KM
    GARDNER, P
    FRITZSCHE, V
    BRADSHAW, AM
    ASENSIO, MC
    HU, XM
    WOODRUFF, DP
    GONZALEZELIPE, AR
    [J]. CHEMICAL PHYSICS LETTERS, 1992, 199 (06) : 625 - 630
  • [5] CALCULATION OF AUGER-ELECTRON DIFFRACTION AT A NI(111) SURFACE
    FRITZSCHE, V
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (49) : 9735 - 9747
  • [6] DIRECT PHOTOELECTRON-DIFFRACTION METHOD FOR ADSORBATE STRUCTURAL DETERMINATIONS
    FRITZSCHE, V
    WOODRUFF, DP
    [J]. PHYSICAL REVIEW B, 1992, 46 (24) : 16128 - 16134
  • [7] LINEAR-SUPERPOSITION METHOD FOR THE MULTIPLE-SCATTERING PROBLEM IN LOW-ENERGY-PHOTOELECTRON DIFFRACTION
    FRITZSCHE, V
    PENDRY, JB
    [J]. PHYSICAL REVIEW B, 1993, 48 (12): : 9054 - 9057
  • [8] CONSEQUENCES OF A FINITE-ENERGY RESOLUTION FOR PHOTOELECTRON DIFFRACTION SPECTRA
    FRITZSCHE, V
    [J]. SURFACE SCIENCE, 1992, 265 (1-3) : 187 - 195
  • [9] FRITZSCHE V, 1992, J ELECT SPECTROS REL, V58, P2995
  • [10] HASSELSTROM J, UNPUB