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    题名 作者 年代 出处 被引量
1杯芳烃的合成及自组装研究的新进展显示文摘简要介绍了杯芳烃的结构特征、性能及应用,重点综述了:①几种新型杯芳烃的合成及结构;②杯芳烃衍生物的合成及其分子自组装;③特殊杯芳烃的合成与识别。张来新 朱海云 赵卫星 2013应用化工2013,42,3:2
2HSO_3-functionalized Br nsted acidic ionic liquids promote esterification of aromatic acid显示文摘Esterification of aromatic acid can be promoted via HSO3-functionalized Br nsted acidic ionic liquids (ILs). Under the optimum conditions, using 1-(3-sulfonic acid) propyl-3-methylimidazolium hydrogen sulfate ([MimC3SO3H][HSO4]) and 1-(4-sulfonic acid) butyl-3-methylimidazolium hydrogen sulfate ([MimC 4 SO 3 H][HSO4 ]) as dual solvent-catalysts, the conversion of esterification of aromatic acid was determined to be more than 90%, indicating that HSO3-functionalized ILs show much better catalytic ability than those of non-functionalized ionic liquids. The separation of desired product was easily performed by extraction with diethyl ether and these HSO3-functionalized ILs could be reused 7 times after vacuum drying. Our data represent an environmentally friendly method for the preparation of aromatic esters.ZHOU FengYan XIN BingWei HAO JingCheng 2013Chinese Science Bulletin2013,58,26:2
3Binding energies and interaction origins between nonclassical single-electron hydrogen,sodium and lithium bonds and neutral boron-containing radicals:a theoretical investigation显示文摘Nonclassical single electron hydrogen,sodium and lithium bonds(SEHBs,SENaBs and SELiBs)between single electron acceptors X–A(A=H,Na,Li;X=CN,HCC,HO,NC,CF3)and neutral radicals BY2(Y=H,OH,CH3)and have been systematically investigated by high level theoretical methods,such as second-order Mφller-Plesset perturbation theory(MP2),spin-component-scaled MφllerPlesset theory(SCS-MP2),the coupled cluster method with perturbative triples(CCSD(T)),and the correlation consistent composite approach(ccCA).Binding energies have been corrected for zero-point vibrational effects and(when applicable)basis set superposition error.The quantum theory of atoms in molecules(AIM)and natural bond orbital(NBO)analyses were also employed to qualitatively characterize the single electron bond interactions.The stabilization energy was partitioned via the localized molecular orbital energy decomposition analysis(LMOEDA)method,and both electrostatic and exchange interactions were seen to be major driving forces for the complex stabilization.Interestingly,the sum of the energy contributors of exchange(EEX),repulsion(EREP),polarization(EPOL),dispersion(EDIS)is close to zero and the changes in the interaction energy follow the trend of the electrostatic energy(EES).We observe several linear relationships among the optimized intermolecular parameters and the interaction energies of the various complexes.Zhifeng Li Xiaoping Yang Nathan J.DeYonker Xianyan Xu Zhen Guo Cunyuan Zhao 2014Chinese Science Bulletin2014,59,21:0
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