首页> 外文期刊>Chemical Physics Letters >QUANTUM CHEMICAL STUDY OF HYDROGEN-BONDED CH2=C=O-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX AND CH2=C=CH2-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX (X=CL, F) COMPLEXES
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QUANTUM CHEMICAL STUDY OF HYDROGEN-BONDED CH2=C=O-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX AND CH2=C=CH2-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX (X=CL, F) COMPLEXES

机译:氢键CH2 = C = O-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX和CH2 = C = CH2-CENTER-DOT-CENTER-DOT-CENTER-DOT-HX的量子化学研究(X = CL ,F)复杂

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摘要

An ab initio quantum chemical study, largely at the 6-311 + + G**/MP2 = full level of theory has been carried out on the 1:1 and 2:1 complexes of HX (X = Cl, F) with ketene and are compared with the corresponding isoelectronic complexes of H2C=C=CH2 and HX. Three possible modes of the hydrogen bond between HX and ketene via the dipole-induced dipole (X-H ... C, X-H ... O) and the weak X-H ...pi interactions were considered. The binding energy has been calculated after giving careful consideration to basis set superposition effects and zero-point vibrational energy effects. The electron correlation correction to the binding energy has also been computed. Weak X-H ...pi hydrogen bonds are perhaps possible with nonpolar C=C and C=C pi-clouds. [References: 24]
机译:从头开始进行量子化学研究,主要是在6-311 + + G ** / MP2 =完整水平的理论下,对HX(X = Cl,F)与乙烯酮的1:1和2:1配合物进行了研究并与H2C = C = CH2和HX的相应等电子配合物进行比较。考虑了通过偶极感应的偶极子(X-H ... C,X-H ... O)和弱的X-H ... pi相互作用,HX和乙烯酮之间氢键的三种可能模式。结合能是在仔细考虑基组叠加效应和零点振动能效应之后计算得出的。还计算了对结合能的电子相关校正。对于非极性C = C和C = C pi云,可能存在弱的X-H ... pi氢键。 [参考:24]

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