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Titolo:
A complete structural study of the coverage dependence of the bonding of thiophene on Cu(111)
Autore:
Milligan, PK; Murphy, B; Lennon, D; Cowie, BCC; Kadodwala, M;
Indirizzi:
Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland G12 8QQ ow G12 8QQ, Lanark, Scotland SERC, Daresbury Lab, CLRC, Warrington WA4 4AD, Cheshire, England SERC Warrington Cheshire England WA4 4AD ngton WA4 4AD, Cheshire, England
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 1, volume: 105, anno: 2001,
pagine: 140 - 148
SICI:
1520-6106(20010111)105:1<140:ACSSOT>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADSORPTION; PYRIDINE; BENZENE; SURFACES; AG(111); NI(111);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Kadodwala, M Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland G12 8QQ anark, Scotland
Citazione:
P.K. Milligan et al., "A complete structural study of the coverage dependence of the bonding of thiophene on Cu(111)", J PHYS CH B, 105(1), 2001, pp. 140-148

Abstract

The influence of coverage on the structure and bonding of thiophene withinchemisorbed overlayers on Cu(111) has been investigated. Normal incidence X-ray standing wavefield absorption (NIXSW) and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) were used to determine the adsorption site and orientation of thiophene. In the low coverage phase the thiophene molecule forms a pi -bonded species, adopting an atop adsorption site with a Cu-S separation of 2.62 +/- 0.03 Angstrom with the ring inclined by 26 +/- 5 degrees, On increasing coverage, thiophene undergoes a compressional phase transformation to a more weakly bound sulfur lone-pair-bonded species. In this new phase the thiophene still occupies an atop site but the Cu-S separation has increased by 0.2 Angstrom and the ring is now inclined at 44 +/- 6 degrees to the surface.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 00:28:06