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Approaches to Establishing the Chemical Structure of Extraterrestrial Organic SolidsThe majority of extraterrestrial organic matter in carbonaceous chondrites resides in a chemically complex, insoluble and perhaps macromolecular phase. We have been applying a series of independent solid state NMR experiments that are designed to provide a self consistent chemical characterization of this complex material. To date we have thoroughly analyzed 8 organic residues from different meteorites, including a CR2 (EET92042), CIl(Orgueil), CM2 (Murchison), Tagish Lake, CM2 (AlH83100), CM2 (Cold Bokkefeld), CM2 (Mighei), CM3 (Y86720). In fig 1. (1)H to (13)C cross polarization NMR spectra of four of these are shown. Note that there exists an enormous range in chemistry exhibited in organic solid [evident by the breadth of the spectral features both in the aliphatic region (sp(sup 3)) and the aromatic region (sp(sup 2))]. There is also considerable differences in the carbon chemistry across the meteorite groups.
Document ID
20030073608
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Cody, G. D.
(Carnegie Institution of Washington Washington, DC, United States)
Alexander, C. M. OD.
(Carnegie Institution of Washington Washington, DC, United States)
Wirick, Susan
(State Univ. of New York Stony Brook, NY, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Workshop on Cometary Dust in Astrophysics
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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