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Tetra-σ attachment of allyl cyanide on Si(111)−7×7

Tao, Franklin Feng
Dai, Yu Jing
Xu, Guo Qin
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Abstract
The investigation of allyl cyanide adsorption on Si(111)−7×7 using high-resolution electron-energy-loss spectroscopy (HREELS), x-ray photoelectron spectroscopy (XPS), and ultraviolet photoelectron spectroscopy (UPS) reveals a tetra-σ binding mode through two [2+2]-like cycloaddition reactions. The HREELS spectra of chemisorbed monolayer show the absence of C=C, C≡N, and C(sp2)—H stretching modes coupled with the appearance of C=N stretching mode at ∼1590 cm−1, demonstrating that both the C=C and C≡N of allyl cyanide directly participate in binding with the surface to form C—C and C=N bonds, respectively. This binding configuration was further confirmed in our XPS and UPS studies. The imine-containing skeleton formed on the surface can possibly be employed as a molecular template for a further modification of Si surfaces and syntheses in vacuum.
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This is the published version. Copyright 2002 American Physical Society
Date
2002-07-31
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American Physical Society
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Tao, Feng, Yu Jing Dai, and Guo Qin Xu. "Tetra-σ Attachment of Allyl Cyanide on Si ( 111 ) − 7 × 7." Phys. Rev. B Physical Review B 66.3 (2002). http://dx.doi.org/10.1103/PhysRevB.66.035420
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