Structural study of new hydrocarbon nano-crystals by energy-filtered electron diffraction

J. S. Wu, N. Melcer, W. P. Sharp, M. O'Keeffe, John Spence, O. M. Yaghi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A new brittle hydrocarbon has been successfully synthesized in polycrystalline form, and its crystal structure solved by quantitative electron diffraction. By 3D tilting of the nano-crystals, the lattice type and unit cell parameters were determined. (Triclinic, a=6.03Å, b=6.23Å, c=13.86Å, α=87.26°, β=106.69°, and γ=119.01°. ) Spot diffraction patterns were obtained at -165°C using the Koehler selected-area mode on a LEO 912 TEM fitted with an omega in-column elastic energy filter. The direct methods algorithm was then applied to merged intensities and a trial structure obtained assuming single scattering. This was further refined to obtain good agreement with a small residual of about 10% using multiple scattering calculations. A diagram of the proposed structure is given.

Original languageEnglish (US)
Pages (from-to)145-150
Number of pages6
JournalUltramicroscopy
Volume98
Issue number2-4
DOIs
StatePublished - Jan 2004

Fingerprint

Multiple scattering
Hydrocarbons
Electron diffraction
Crystal lattices
Diffraction patterns
electron diffraction
hydrocarbons
Crystal structure
Scattering
Transmission electron microscopy
Crystals
low Earth orbits
scattering
crystals
diffraction patterns
diagrams
filters
transmission electron microscopy
crystal structure
energy

Keywords

  • 006
  • 011
  • 61.14.Dc
  • 61.14.Lj
  • 61.66.Hq
  • Electron crystallography
  • Electron diffraction
  • Electron microscopy
  • Molecular structure
  • Structure of organic crystal

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation

Cite this

Structural study of new hydrocarbon nano-crystals by energy-filtered electron diffraction. / Wu, J. S.; Melcer, N.; Sharp, W. P.; O'Keeffe, M.; Spence, John; Yaghi, O. M.

In: Ultramicroscopy, Vol. 98, No. 2-4, 01.2004, p. 145-150.

Research output: Contribution to journalArticle

Wu, J. S. ; Melcer, N. ; Sharp, W. P. ; O'Keeffe, M. ; Spence, John ; Yaghi, O. M. / Structural study of new hydrocarbon nano-crystals by energy-filtered electron diffraction. In: Ultramicroscopy. 2004 ; Vol. 98, No. 2-4. pp. 145-150.
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