A NUCLEAR MAGNETIC RESONANCE AND MASS SPECTRAL STUDY OF SOME ALKENE COMPLEXES OF RHODIUM(I) AND IRIDIUM(I): COORDINATED ALKENE ROTATIONAL BARRIERS, APPEARANCE POTENTIALS AND ESTIMATED HEATS OF FORMATION

1983 ◽  
Vol 13 (1) ◽  
pp. 29-40 ◽  
Author(s):  
Michael A. Arthurs ◽  
S. Martin Nelson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spectral Study ◽  
Heats Of Formation ◽  
Mass Spectral ◽  
Rotational Barriers ◽  
Mass Spectral Study ◽  
Nuclear Magnetic

Structures and Environmental Significance of Heptachlor Epoxide Isomers

1993 ◽  
Vol 76 (5) ◽  
pp. 1092-1097
Author(s):  
Joseph R Donnelly ◽  
G Wayne Sovocool ◽  
Richard L Titus
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Environmental Contamination ◽  
Spectral Characteristics ◽  
Heptachlor Epoxide ◽  
Environmental Significance ◽  
Mass Spectral ◽  
Nuclear Magnetic

Abstract Historically, both endo- and exo-epoxides of heptachlor are known. The exo-epoxy isomer of heptachlor epoxide is a remarkably stable metabolite of heptachlor and is generally found in the environment where heptachlor was introduced. In this study, the nuclear magnetic resonance and mass spectral characteristics of the 2 epoxide-containing isomers ("A" and "B") were investigated to verify their structural assignments. We believe that the metabolite, Isomer B, is the only isomer found in the environment resulting from environmental contamination by chlordane and heptachlor.

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