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Physical and Donor–Acceptor Properties of 3-Propyl-4-ethylsydnone

Physical and Donor–Acceptor Properties of 3-Propyl-4-ethylsydnone

Authors :
Mayumi Kataoka
Yukio Sasaki
Minoru Handa
Makoto Wakaumi
Source :
Bulletin of the Chemical Society of Japan. 70:315-320
Publication Year :
1997
Publisher :
The Chemical Society of Japan, 1997.

Abstract

The physical properties of 3-propyl-4-ethylsydnone at various temperatures were investigated by dielectric constant (e), refractive index (nD), density (ρ), and viscosity (η) measurements. The dielectric constant of 3-propyl-4-ethylsydnone was very high compared with those of many organic solvents. For example, it was found to be 64.6 at 25 °C, close to that of propylene carbonate (64.9), a typical nonaqueous polar solvent with a high dielectric constant. The refractive index and density for 3-propyl-4-ethylsydnone decreased linearly with increasing temperature. The viscosity of 3-propyl-4-ethylsydnone at 25 °C was 11.2 cP (1 cP = 10−3 N s m−2). This was larger than those of many organic solvents and close to that of phenol (11.6 cP at 20 °C). From a line for log η vs. 1/T, the activation energy (Eη) for the viscosity of 3-propyl-4-ethylsydnone was found to be 29.7 kJ mol−1. The estimation of donor (DN) and acceptor (AN) numbers for 3-propyl-4-ethylsydnone were also done from 29Si and 13C NMR spectroscopi...

Details

ISSN :
13480634 and 00092673
Volume :
70
Database :
OpenAIRE
Journal :
Bulletin of the Chemical Society of Japan
Accession number :
edsair.doi...........6926fbbdc760f1a86ec204dc0103f4d8
Full Text :
https://doi.org/10.1246/bcsj.70.315