简介:自我介绍和X1一样基于前驱平台打造的SUV,车体略小,却更具有轿跑气质奔驰的入门级SUV产品,基于MFA前驱平台打造,早已由北京奔驰负责国产尺码长4379毫米,宽1824毫米,高1560毫米,轴距为2670毫米长4449毫米,宽1804毫米,高1535毫米,轴距为2699毫米动力引入国内的车型入门款采用前轮驱动,搭载1.5T直列3缸涡轮增压汽油机,最大功率为140马力,峰值扭矩为220牛·米,匹配7挡双离合变速箱;2.0T发动机最大功率为192马力,峰值扭矩为280牛·米,前驱车型上和7挡双离合变速箱匹配,四驱车型上和8挡自动变速箱匹配
简介:ThesplittingofpotentialenergylevelsforgroundstateX2ΠgofOx2(x=+1,1)underspin–orbitcoupling(SOC)hasbeencalculatedbyusingthespin–orbit(SO)multi-configurationquasi-degenerateperturbationtheory(SO-MCQDPT).TheirMurrell–Sorbie(M–S)potentialfunctionsaregained,andthenthespectroscopicconstantsforelectronicstates2Π1/2and2Π3/2arederivedfromtheM–Sfunction.TheverticalexcitationenergiesforOx2(x=+1,1)areν[O+12(2Π3/2→X2Π1/2)]=195.652cm1,andν[O12(2Π1/2→X2Π3/2)]=182.568cm1,respectively.Allthespectroscopicdataforelectronicstates2Π1/2and2Π3/2aregivenforthefirsttime.
简介:使用CASSCF/MRCI方法计算了CS+的势能曲线,为了获得更准确的势能曲线,必须对c和s原子采用大基组aug-cc—pCV5Z。测得CS+的振动能级和光谱参数,并与现有的实验值进行比较。这些结果充分支持以前观测的振动能级的结论。
简介:QuantumdynamicscalculationsforthetitlereactionH(2S)+S2(X3-Σg)→SH(X2Π)+S(3P)areperformedbyusingagloballyaccuratedoublemany-bodyexpansionpotentialenergysurface[J.Phys.Chem.A1155274(2011)].TheChebyshevrealwavepacketpropagationmethodisemployedtoobtainthedynamicalinformation,suchasreactionprobability,initialstate-specifiedintegralcrosssection,andthermalrateconstant.Itisfoundnotonlythatthereisareactionthresholdnear0.7eVinbothreactionprobabilitiesandintegralcrosssectioncurves,butalsothatboththeprobabilityandcrosssectionincreasefirstlyandthendecreaseasthecollisionenergyincreases.Theexistenceoftheresonancestructureinboththeprobabilityandcrosssectioncurvesisascribedtothedeeppotentialwell.Thecalculationoftherateconstantrevealsthatthereactionoccurringonthepotentialenergysurfaceoftheground-stateHS2isslowtotakeplace.