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Volumn 102, Issue 50, 1998, Pages 10295-10306

Sequential dehydrogenation of unsaturated cyclic C5 and C5 hydrocarbons on Pt(111)

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Indexed keywords


EID: 0009704647     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (46)

References (78)
  • 28
    • 11744388264 scopus 로고    scopus 로고
    • note
    • Saturation typically occurred near an (uncalibrated) exposure of ∼6 L. We believe the RAIRS-based measures are not accurate to more than ±10%.
  • 43
    • 11744290429 scopus 로고    scopus 로고
    • note
    • We also considered the possibility that the splitting arise from cyclopentene adsorbates bound at chemically different or defect sites on the (111) surface. We discount this possibility for two reasons; first, the splitting seen is indepindent of coverage, and, second, the bands are too intense to arise from molecules bound at sites of low number density.
  • 47
    • 0010284823 scopus 로고
    • and references therein
    • As judged from the literature database, the isotropic ratio of the stretching combinations is ∼1.0:1.2. See Parikh, A. N.; Allara, D. L. J. Chem. Phys. 1992, 96, 927-945 and references therein.
    • (1992) J. Chem. Phys. , vol.96 , pp. 927-945
    • Parikh, A.N.1    Allara, D.L.2
  • 54
    • 11744316890 scopus 로고    scopus 로고
    • note
    • Some literature reports refer to these groups as exo and endo C - H bonds. In our nomenclature, exo and endo ondicate distal and proximal, respectively.
  • 57
    • 11744276039 scopus 로고    scopus 로고
    • note
    • 5-cycloheptadienyl fragments on Pt(111).
  • 60
    • 11744262880 scopus 로고    scopus 로고
    • note
    • The intensities seen rule out the possibility that one of these bands arises from the C - H oscillators on the rehybridized olefinic carbons.
  • 62
    • 11744308164 scopus 로고    scopus 로고
    • note
    • 5-cycloheptadienyl fragments on Pt(111).
  • 64
    • 0001029331 scopus 로고
    • King, R. B., Ed.; Academic Press: New York
    • King, R. B. The Organic Chemistry of Iron; King, R. B., Ed.; Academic Press: New York, 1978; Vol. 1, p 525.
    • (1978) The Organic Chemistry of Iron , vol.1 , pp. 525
    • King, R.B.1
  • 69
    • 11744277313 scopus 로고    scopus 로고
    • note
    • The higher-frequency C - H bend seen in Figure 7 is weaker at lower coverges; this may explain why (other than because of the larger noise levels) this feature is not observable for the benzene generated from 1,4-cyclohexadiene, because the spectrum was obtained by dosing at low temperatures and then warming to 350 K. For 1,3-cylobexadiene, the spectrum shown had a higher benzene coverage because the surface was dosed at 350 K until a saturated overlayer was generated.
  • 78
    • 0029250204 scopus 로고
    • 2 group that interacts with the surface (See Hostetler, M. J.; Nuzzo, R. G.; Girolami, G. S. J. Am. Chem. Soc. 1995, 117, 1814-1827). With the data now available, we know that this uncharacteristically high-frequwncy band is more properly assigned to the distal C-H strethes of the surface-contacting methylene units. An identical band is seen for cyclohexene.
    • (1995) J. Am. Chem. Soc. , vol.117 , pp. 1814-1827
    • Hostetler, M.J.1    Nuzzo, R.G.2    Girolami, G.S.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.