Structure of high-molecular carbonaceous compound in carbonaceous chondrites and formation of IR-spectroscopically similar compounds in the laboratory.
Main components of carbonaceous matter in carbonaceous chondrites are high molecular organic matter. Examinations of the compounds using pyrolysis GC/MS and FT-IR indicated the structural resemblance of major part of the molecule for all of the compounds from different types of carbonaceous chondrites (8 Antarctic and 2 none-Antarctic meteorites). A carbonaceous matter derived from graphite on a shock experiment using a rail gun (1g projectile at 7 km/s) showed similar IR spectrum to those of the meteoritic high-molecular organic matter. C-60 fullerene also gave a similar compound (with minor differences in IR spectra) on a shock experiment under the same conditions. A shock experiment using coronene also examined.
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Department of Earth and Planetary Sciences, Kyushu University Hakozaki, Fukuoka, Japan.
D002244:Carbon / Q000032:analysis* / Q000737:chemistry; D003031:Coal / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006108:Graphite / Q000032:analysis* / Q000737:chemistry; D019110:Meteoroids; D015394:Molecular Structure; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry / Q000145:classification; D017550:Spectroscopy, Fourier Transform Infrared
D003031:Coal; D011084:Polycyclic Aromatic Hydrocarbons; D002244:Carbon; D006108:Graphite