排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Y. Kuwahara H. Fukami R. Howard S. Ishii F. Matsumura W.E. Burkholder 《Tetrahedron》1978,34(12):1769-1774
Chemical an spectroscopic evidence is presented to show that 2,3-dihydro-2,3,5-trimethyl-6-(1-methyl-2-oxobutyl)-4H-pyran-4-one (10) is the sex pheromone produced by the female drugstore beetle, Stegobium paniceum L. 相似文献
2.
Munetaka Nakata Kunio Kohata Tsutomu Fukuyama Kozo Kuchitsu C.J. Wilkins 《Journal of Molecular Structure》1980
The molecular structure of carbonyl fluoride has been determined by electron diffraction. The results have been used in conjunction with the rotational constants reported by Carpenter in a combined structure analysis. The values so obtained are rz (C=O) = 1.1717 ± 0.0013 Å, rz (C-F) = 1.3157 ± 0.0005 Å, and ∠zF-C-F = 107.71 ± 0.08°. These agree with the corresponding parameters estimated by Carpenter from the rotational constants alone. The effective constants, α3, representing the cubic anharmonicity of bond stretching vibrations have been estimated. 相似文献
1