The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show t...The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show that monobromo derivatives can be selectively obtained when the ratio of NBS to a substrate is 1 1∶1 and that the reactivities of the substrates toward photochemical reaction are DNM > Fluorene> DPM > TPM The reaction mechanisms were also展开更多
The structure and coordination properties of N,N bis(N methylene 2 pyrrolidinyl)alanine have been studied. The results show that the title compound is stable, the geometry calculated by AM1 is in good agreement with e...The structure and coordination properties of N,N bis(N methylene 2 pyrrolidinyl)alanine have been studied. The results show that the title compound is stable, the geometry calculated by AM1 is in good agreement with experimental results. The atoms of O(1),O(15), O(19),O(20) in the molecule bond easily with metallic atoms. So the title compound can form stable complex with rare earth metal ions.展开更多
合成了N-［(2-羟基-5-甲基苯)（苯基）］亚甲基邻苯二胺，晶体属单斜晶系，空 间群P21/c. 晶胞参数 a = 1.034 0(6) nm， b =1.092 0(3) nm， c =1.472 0(4) nm, β = 107.89(3)°, 化学式C20H18N2O, M r =302.36， Z =4, V =1.581 ...合成了N-［(2-羟基-5-甲基苯)（苯基）］亚甲基邻苯二胺，晶体属单斜晶系，空 间群P21/c. 晶胞参数 a = 1.034 0(6) nm， b =1.092 0(3) nm， c =1.472 0(4) nm, β = 107.89(3)°, 化学式C20H18N2O, M r =302.36， Z =4, V =1.581 7(10) nm3 ， D c = 1.268 g/cm3， F （000）= 160，最终偏离因子 R1 = 0.054 1. 结构分析表明，分子间以氢键形成二聚体，二聚体 的分子间互为中心对称. 循环伏安法表明标题化合物的电极反应是一个不可逆的单电子传荷 过程.展开更多
文摘The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show that monobromo derivatives can be selectively obtained when the ratio of NBS to a substrate is 1 1∶1 and that the reactivities of the substrates toward photochemical reaction are DNM > Fluorene> DPM > TPM The reaction mechanisms were also
文摘The structure and coordination properties of N,N bis(N methylene 2 pyrrolidinyl)alanine have been studied. The results show that the title compound is stable, the geometry calculated by AM1 is in good agreement with experimental results. The atoms of O(1),O(15), O(19),O(20) in the molecule bond easily with metallic atoms. So the title compound can form stable complex with rare earth metal ions.
文摘合成了N-［(2-羟基-5-甲基苯)（苯基）］亚甲基邻苯二胺，晶体属单斜晶系，空 间群P21/c. 晶胞参数 a = 1.034 0(6) nm， b =1.092 0(3) nm， c =1.472 0(4) nm, β = 107.89(3)°, 化学式C20H18N2O, M r =302.36， Z =4, V =1.581 7(10) nm3 ， D c = 1.268 g/cm3， F （000）= 160，最终偏离因子 R1 = 0.054 1. 结构分析表明，分子间以氢键形成二聚体，二聚体 的分子间互为中心对称. 循环伏安法表明标题化合物的电极反应是一个不可逆的单电子传荷 过程.
