1) coupling constant
偶合常数
1.
The coupling constants between 19 F and 1H/ 13 C were determined accurately.
用1 H ,1 3CNMR和多种二维核磁共振谱表征了本系列化合物的结构 ,完成了1 H和1 3CNMR谱带的归属 ,测定了氟原子对各质子和碳原子的偶合常数 ,探讨了影响偶合常数大小的因素。
2.
The ~1H and ~(13)C chemical shifts were assigned, and the coupling constants between ~(19)P and ~1H/~(13)C were determined accurately.
用~1H,~(13)C NMR及多种二维核磁共振谱进一步确定了本系列化合物5,10-二氢磷杂吖嗪衍生物的结构,完成了~1H和~(12)C NMR谱峰的全归属,探讨了影响偶合常数大小的因素。
2) 5JPH coupling constant
5JPH偶合常数
3) NMR coupling constant
NMR偶合常数
4) nuclear spin-spin coupling constant
核自旋偶合常数
1.
A theroretical calculation on C-H nuclear spin-spin coupling constants;
直接键链~1JC-H的核自旋偶合常数的理论计算
2.
Their nuclear spin-spin coupling constants of C-C-F bonds were also calculated by the same method,which can be used to set up a general equation for the calculation of spin-spin coupling constants.
用密度泛函B3LYP方法,在6311G基组上对36个化合物进行构型优化、频率分析,计算了C C F的核自旋偶合常数2JC C F。
5) hyperfine coupling fission constant
偶合分裂常数
1.
The results show that the radical of H 2NO·,CH 3NHO·,(CH 3) 2NO· and (C 2H 5) 2NO· can produce 5 lines, 7 lines ,21 lines and 13 lines and hyperfine coupling fission constants are α H=11 9, α N=11 9(in CH 3OH); α H=13 8, α N=13 8(in CH 3OH); α H=12 3, α N=15 2(in CCl 4); α H=10 3, α N=15 2(in CCl 4) respectively.
结果表明 :室温条件下 H2 NO· ,CH3NHO· ,(CH3) 2 NO·和 (C2 H5) 2 NO·自由基均能产生 5条、7条、2 1条和 1 3条偶合分裂峰 ,相应的 H原子和 N原子与自由基单电子之间的偶合分裂常数分别为 :αH=1 1 。
6) Measurement of J coupling
偶合常数的测量
补充资料：4-[(2-羟基-3,5-二硝基苯基)偶氮基]-1,3-苯二酚偶合物
CAS: 72245-21-7
分子式: C12H11N3O5S·C12H8N4O7·C6H7NO3S·C6H6N2O5S·3Na
中文名称: 重氮化2-氨基-5-硝基-苯甲酸钠；重氮化3-氨基苯磺酸钠；重氮化2-[(4-氨基苯基)氨基]-5-硝基苯磺酸钠；4-[(2-羟基-3,5-二硝基苯基)偶氮基]-1,3-苯二酚偶合物
英文名称: Benzenesulfonic acid, 2-amino-5-nitro-, monosodium salt, diazotized, coupled with diazotized 3-aminobenzenesulfonic acid monosodium salt, diazotized 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid monosodium salt and 4-[(2-hydroxy-3,5-dinitrophenyl)
分子式: C12H11N3O5S·C12H8N4O7·C6H7NO3S·C6H6N2O5S·3Na
中文名称: 重氮化2-氨基-5-硝基-苯甲酸钠；重氮化3-氨基苯磺酸钠；重氮化2-[(4-氨基苯基)氨基]-5-硝基苯磺酸钠；4-[(2-羟基-3,5-二硝基苯基)偶氮基]-1,3-苯二酚偶合物
英文名称: Benzenesulfonic acid, 2-amino-5-nitro-, monosodium salt, diazotized, coupled with diazotized 3-aminobenzenesulfonic acid monosodium salt, diazotized 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid monosodium salt and 4-[(2-hydroxy-3,5-dinitrophenyl)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条