Thermolysis of 2,2-dimethoxy-5,5-dimethyl-delta super 3-1,3,4-oxadiazoline studied with photoelectron spectroscopy; He(I) photoelectron spectrum of dimethoxycarbene
Article Abstract:
Gas phase thermolysis of 2,2-dimethoxy-5,5-dimethyl-delta super 3-1,3,4-oxadiazoline carried out in an ultraviolet photoelectron (PE) spectrometer using a CW carbon dioxide laser as a directed heat source at 26 W resulted in a complex PE spectrum with ionization bands of acetone, tetramethoxyethylene and dimethyl oxalate. Dimethoxycarbene seems to have a w conformation based on data from experimental sources and calculations.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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A kinetic study of the reactions of dimethyl sulfide bridged tetramethylplatinum (II) and octamethylplatinum (IV) complexes with dimethyl sulfide and bidentate ligands
Article Abstract:
Rate constants and activation parameters are given for reactions of dimethyl sulfide bridged tetramethylplatinum (II) and octamethylplatinum (IV) complexes with dimethyl sulfide and bidentate ligands. Although substitution mechanisms of the platinum (II) complexes are well-known, less is known about platinum (IV) complexes because substitution causes side reactions. This is not true of methylplatinum (IV) complexes.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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Kinetic studies of the sigma-adduct formation and nucleophilic substitution in the reactions of ethyl 2,4,6-trinitrophenyl ether, some phenyl 2,4,6-trinitrophenyl ethers, and phenyl 2,4-dinitronaphthyl ether with aniline in dimethyl sulfoxide
Article Abstract:
Reaction of ethyl 2,4,6-trinitrophenyl ether and aniline in dimethyl sulfoxide with Dabco takes place in two stages. Proton transfer has been shown by kinetic study to be rate limiting in formation of the intermediate and in subsequent decomposition, which is acid catalyzed. Phenoxide is a better leaving group than ethoxide by a considerable margin.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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