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Preparation of 6-aminocyclohepta-2,4-dien-1-one Derivatives via Tricarbonyltroponeiron
Published on: August 12, 2019
13 C relaxation in cyclopentadienyliron dicarbonyl acyl compounds
Lewis E Nance1, H J Will1, D Brent MacQueen1
1Department of Chemistry, University of North Carolina at Wilmington, Wilmington, North Carolina 28403 USA.
Abstract:
T1 values for the protonated carbons of four acyl compounds, all possible combinations of methylpropanoyl and 2-ethylbutanoyl groups with cyclopentadienyl- and methylcyclopentadienyl-iron dicarbonyl, were determined at ambient temperature. Carbon-13 T1 ratios for the acyl group relative to the ring system indicate relative differences in motion when obtained in the two solvents, CDCl3 and CD2 Cl2 . T1 values at -10°C, relative to 24°C, give further insight into motional modes. Carbon-13 and proton NMR chemical shift values for all compounds and the NOE for one compound are reported.
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