Thermal evolution of benzene adsorbate phases on a Os(0001) surface

Mimicking Aspects of Heterogeneous Catalysis: Generating, Isolating, and Reacting Proposed Surface Intermediates on Single Crystals in Vacuum

“…348 In both systems η 2 -coordination was proposed because of the (100) 296 and Cu(100), 194 (b) phenyl on Os(0001) 94 and Cu(100), 195,361 (c) benzyne on Mo(110), 96 and (d) propenyl/allyl on Al(100) 353 and Ag (111), 354 respectively. absence of CdC stretching modes above 1500 cm -1 in the HREELS spectra.…”

Behavior of benzene on Zr(0001): effect of electron bombardment on benzene desorption profiles

“…It is of both fundamental and applied interest to investigate the interaction of carbon-containing molecules with gettering metal surfaces. In addition, electronbombardment studies of zirconium might lead to a better understanding of surface reactions occurring in nuclear applications where zirconium 0039 The interest to study benzene as a model for more complicated aromatic molecules on metal surfaces is well known, and the interaction of benzene with well-defined single crystal surfaces has been investigated extensively [2][3][4][5][6][7][8][9][10][11][12][13][14]. The adsorption and thermal desorption behavior of C 6 H 6 on Zr(0 0 0 1) under ultra-high vacuum conditions has already been investigated in our laboratory [15,16].…”

Origin and consequences of aromatic back-bonding at a transition metal surface: Benzyne on Ir{100}

“…On the other hand, it is reported that benzene ordered structures may be obtained by the influence of small amounts of coadsorbates such as CO. 11 Although the adsorption of benzene has been studied intensively, there are only a few structural studies of benzene fragments such as benzyne (C 6 H 4 ). Benzyne has been identified as a possible stable precursor of complete benzene decomposition on Mo͕110͖, 12,13 Os͕0001͖, 14,15 and Ni͕110͖. 16 The benzyne is reported to be tilted around 45°on Os͕0001͖ by angle-resolved ultraviolet photoelectron spectroscopy ͑ARUPS͒.…”

“…16 The benzyne is reported to be tilted around 45°on Os͕0001͖ by angle-resolved ultraviolet photoelectron spectroscopy ͑ARUPS͒. 14,15 Adsorption and thermal decomposition of iodobenzene on Pt͕111͖ is thought also to form phenyl (C 6 H 5 ) and benzyne intermediates, which are tilted at roughly 73°, according to high-resolution electron energy loss spectroscopy ͑HREELS͒. 17 A recent variable-temperature scanning tunneling microscopy ͑STM͒ study on Cu͕001͖ 18 showed the dissociation of benzene to benzyne was induced by the STM tip and the resulting fragment was adsorbed perpendicular to the surface.…”