Matrix Isolation of Boron and Carbon Vapor. Control of Cluster Formation During Preparation and Annealing

Abstract

The formation and recombination of small boron/carbon clusters were studied by quantitative Fourier transform infrared (FTIR) spectroscopy. Samples were prepared by evaporation of powder mixtures from a resistively heated oven (3000 K) and isolated at 10 K in solid argon C3 and BC2 disappeared entirely over the course of several annealings. Yields of all the larger clusters (BiCnj, II> 4 J = 0, 1, 2) increased during annealing. Clusters within >4 are linear, with the boron atoms of the J = land 2 clusters capping the ends of carbon chains; B(2)C(nn-2) cluster are inert.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 2000
Accession Number
ADA409816

Entities

People

  • Carl William Larson
  • J. D. Presilla-marquez
  • J. Harper

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Annealing
  • Boron Carbides
  • Chemistry
  • Condensation
  • Contracts
  • Geometry
  • High Energy
  • Mass Spectrometry
  • Military Research
  • Molecules
  • Spectra
  • Spectroscopy
  • Transition Temperature
  • Vapor Pressure
  • Vapors

Readers

  • Combustion science or combustion engineering.
  • Quantum Chemistry
  • Thermal Physics or Thermal Science.

Technology Areas

  • Fully Networked C3