简介：过量臼齿的卷VmEand运动学的粘性为丙烯乙二醇monomethyl醚(1-methoxy-2-propanol)的二进制混合物作为作文的一个函数被测量了，MeOCH2CH(哦)我，丙烯乙二醇monoethyl醚(1-ethoxy-2-propanol)，EtOCH2CH(哦)我，丙烯乙二醇monopropyl醚(1-propoxy-2-propanol)，PrOCH2CH(哦)我，丙烯乙二醇monobutyl醚(1-butoxy-2-propanol)，BuOCH2CH(哦)我，和丙烯乙二醇tert丁基醚(1-tert-butoxy-2-propanol)，t-BuOCH2CH(哦)我与1-butanol臼齿的体积是的过量为系统2-butanol+1-methoxy-2-propanol，和+1-propoxy-2-propanol越过为有1-butanol的所有系统的全部范围ofcomposition否定、积极，为为系统2-butanol+1-ethoxy-2-propanol，和+1-tert-butoxy-2-propanol的系统2-butanol+1-butoxy-2-propanol，和变化符号否定。从试验性的数据，在从xii的动态粘性的偏差被计算了。两过量臼齿的卷和粘性偏差被方法用一个Redlich-Kister类型多项式方程相关为二进制系数和标准错误的评价最少平方。
简介：The1.3-dipolarcycloadditionreactionof2-trifluoromethyl-oxazoloneandtheactivatedcarbon-carbonmultiplebondwasstudiedandgaveaconvenientwaytosynthesize2-trifluoromethylpyrrolederivatives.
简介：热行为，机制和在一个规划温度的模式的标题混合物的发热的第一阶段的分解反应的运动参数借助于DSC，TG-DTG和红外被调查了。反应机制被建议。在微分形式，明显的激活精力(Ea)和这反应的pre指数的因素(A)的实验运动模型功能是(1-)?1.119，211.3kj/mol和1020.2s?1分别地。混合物的热爆炸的批评温度是202.2爠慥瑣潩?㈠低??湡敧漠??????????????鈿酌顛鱎?????疞????陴?陴?T
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简介：ＴＨＥ ＳＵＰＰＯＲＴＥＤ ＧＯＬＤ ＣＡＴＡＬＹＳＴＳ ＦＯＲ ＣＬＯＳＥＤ ＣＹＣＬＥ ＣＯ２ ＬＡＳＥＲＴＨＥＳＵＰＰＯＲＴＥＤＧＯＬＤＣＡＴＡＬＹＳＴＳＦＯＲＣＬＯＳＥＤＣＹＣＬＥＣＯ２ＬＡＳＥＲ￥ＺｈｅｎｇＰｉｎｇＨＡＯ；ＬｉＤｕｎＡＮ；...
简介：Newphosphorus-andselenium-containingheterocyclyes,1,3,2,6-dioxaphosphaselena-cyclooctanes(la-1h),weresynthesizedbythereactionofbis(2-hydroxyethyl)selenidewithRP(X)Cl2whereR=alkoxyl,aroxyl,arylandX=Oorlonepair.Theirstructuresweredeterminedbyspectro-scopiesandelementalanalysesandfinallyconfirmedbytheX-raycrystallographicanalysisof1c.Themolecularstructuresoftheheterocycleswerediscussedintermofconformationalanalysis.
简介：Ｎｉ／Ｍｏ２ＮａｓａＨｉｇｈｌｙＡｃｔｉｖｅＨｙｄｒｏｄｅｎｉｔｒｏｇｅｎａｔｉｏｎＣａｔａｌｙｓｔＮｉ／Ｍｏ２ＮａｓａＨｉｇｈｌｙＡｃｔｉｖｅＨｙｄｒｏｄｅｎｉｔｒｏｇｅｎａｔｉｏｎＣａｔａｌｙｓｔ￥ＷｅｎＹｕＺＨＡＮＧ；ＸｉｎＰｉｎｇＷＡＮＧ；...
简介：Anovelquaternarymetalselenide,K_2CdSnSe_4,wassynthesizedviaamolten-saltreactionat550℃.Thecompoundhasaone-dimensionalstructurecontainingachainof_∞~1[CdSnSe_4]~(2-)anionsseparatedbyK~+cations.ThecrystalbelongstothespacegroupI-42m,withtheunitcellparametersa=0.80298(11)nm,b=0.80298(11)nm,c=0.69217(14)nm,α=β=γ=90°.Areflectancespectroscopystudyrevealsthenatureofthesemiconductorwithanenergygapof1.7eVforthecompoundandithasastrongopticalabsorptioninarangeof2—5eV.
简介：Thenovelcomplex[K(18-C-6)]2[Cd(mnt)2][18-C-6-18-crown-6,nmt=1,2-dicyanoethene-1,2-dithiolate,C2S2-(CN)2^2-]wassynthesizedandcharacterizedbyelementalanalysis,IRspectrumandX-raydiffractionanalysis.Thecomplexdisplaystwo-dimensionalnetworkstructureof[K(18-C-6)]complexsegmentsand[Cd(nmt)2]complexsegmentbridgedbyS-K-S,S-K-NandN-K-Ninteractionsbetweenadjacent[K(18-C-6)]and[Cd(mnt)2]units.
简介：AsimpleandefficientcascadeMichael/cyclizationreactionof3-aminoindolin-2-oneswithenones/enalswasidentifiedforthesynthesisofpotentiallybiologicallyactive3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles],usingDBUasanefficientcatalystandethyleneglycolasanenvironmentallybenignsolvent.Morediverse3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]analoglibrarieswerepreparedingoodyields(upto97%).Thestructureof3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]wasconfirmedbymassspectrometryanalysis,NMRanalysisandsinglecrystalX-raydiffraction.Themainadvantagesofthismethodincludetheavailabilityofstartingmaterials,simpleexperimentaloperation,shortreactiontime,aswellashighyieldsobserved.
简介：ＳＹＮＴＨＥＳＩＳ ＡＮＤ １８３Ｗ ＮＭＲ ＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮ ＯＦ Ｐ４Ｗ３０Ａｌ４（Ｈ２Ｏ）２Ｏ１１２２０－ ＨＥＴＥＲＯＰＯＬＹＡＮＩＯＮＳＹＮＴＨＥＳＩＳＡＮＤ１８３ＷＮＭＲＣＨＡＲＡＣＴＥＲＩＺ?..
简介：利用基团拼合原理，将2，2′-联吡啶和硫醚结构引入到1，3，4-噁二唑母体结构中．以1，10-菲罗啉为原料，经过氧化、酯化、肼解以及环合等化学反应，合成了中间体2，2′-联吡啶-3，3′-二甲酰肼、2，2L联吡啶-3，3，-二（5-E1，3，4-噁二唑-2-硫酮]）以及4个2，2L联吡啶-3，3′-二（5-E1，3，4-噁二唑-2-硫醚]）系列目标化合物，其结构通过1HNMR和单晶X-射线衍射等进行表征．晶体结构分析表明：2，2′-联吡啶的3和3′位上取代基不同，2个吡啶环所在平面的偏转角度不同，1，3，4-噁二唑-2-硫醚结构能使2个吡啶环呈现较大的偏转角度．
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