简介:从有水杨酸酸和thioproline的钐氯化物hexahydrate的反应的产品,[Sm(C7H5O3)2灭牥瑡牵?慷?楦瑴摥戠?敬獡?煳慵敲?敭桴摯?慂敳?湯琠敨映瑩整?潰祬潮業污?桴?浳潯桴摥栠慥?慣慰楣楴獥愠摮琠敨浲摯湹浡捩映湵瑣潩獮漠?桴?潣灭畯摮爠汥瑡癩?潴琠敨猠慴摮牡?敲敦敲据?整灭牥瑡牵?????眠牥?慣'褯N瑡摥愠摮琠扡汵瑡摥愠?‵?湩整癲污?吠敨挠湯瑳湡?潶畬敭攠敮杲?景挠浯畢瑳潩?景琠敨挠浯潰湵?瑡吠企??‵?慷?敭獡牵摥戠??牰'酞洕?硯杹湥戭浯?潣扭獵楴湯挠污牯浩瑥牥愠?啣????7敢?敤楬敶敲?景?
简介:用Co2(CO)8与CH3CSNH2反应制得产物Ⅰ,又用Na2Fe(CO)4与Ⅰ反应制得产物Ⅱ(Ⅰ:Co3(μ3-S)(CO)7(CH3CSNH),Ⅱ:Co2Fe(μ3-S)(CO)7(CH3CSNH).通过元素分析。IR、UV、1HNMR、MS表征并用X射线衍射法测得Ⅱ的单晶结构.该簇合物属三斜晶系、PT空间群,晶胞参数:a=0.9203(1),b=1.1296(2),c=1.1425(2)nm;α=116.40°(2),β=101.92°(2),γ=92.58°(1);z=2,V=1.2162nm3,Dc=1.698cm3,μ=21.89cm-1.结构分析表明,Co2FeS构三角锥分子骨架,所有CO均为端基配体,S1为面桥基配体,CH3CSNH为双齿配体,与Co、Fe形成五元环结构.
简介:采用直接动力学的方法,对多通道反应体系Br+CH3S(O)CH3进行了理论研究.在BH&H-LYP/6-311G(2d,2p)水平下获得了优化几何构型、频率及最小能量路径(MEP),能量信息的进一步确认在MC-QCISD(单点)水平下完成.利用正则变分过渡态理论,结合小曲率隧道效应校正(CVT/SCT)方法计算了该反应的两个可行的反应通道在200K~2000K温度范围内的速率常数.在整个反应区间内,生成HBr的反应通道与生成CHa的反应通道存在着竞争,前者是主反应通道,后者是次反应通道.变分效应和小曲率隧道效应对反应速率常数的计算影响都很小.理论计算得到的两个反应通道的反应速率常数与实验值符合得很好.
简介:SimultaneousBiparametricDeterminationofTotalCalciumandPotassiuminBiologicalFluidsbyFlowInjectionAnalysis──UseofPowell'sMethod...
简介:采用水热合成方法构建了基于Preyssler型多酸[S5W30O110]的有机-无机杂化材料,其分子式为[HKS5W30O110]·(2,2-Hbpy)8·2H2O(1,bpy=bipyridine).单晶X-射线衍射分析表明化合物1是由S-中心的Preyssler型多酸作为模版,被2,2-联吡啶分子包围形成的核壳结构的有机无机杂化材料.这是第一例基于S-中心Preyssler型多酸的超分子核壳结构.其中质子化的2,2’-联吡啶有机基团通过静电作用与Preyssler型多酸分子构筑成有机无机杂化材料.该化合物属于三斜晶系,空间群为P-1.晶胞参数:a=1.79505(2)nm,b=1.83478(2)nm,c=4.12816(4)nm,α=85.0610(10)°,β=80.6160(10)°,γ=60.7210(10)°,晶胞体积为11.7002(2)nm3.
简介:目前,国内没有关于半钢发热剂的国家标准检测方法,只能根据组分范围分别检测各个组分,不仅耗时而且使用的大量化学试剂对环境造成污染。故研究了X-射线荧光光谱法快速测定半钢发热剂中Si,P,S的方法。采用粉末压片制样,研究其制样条件,包括磨样时间、压样时间和压力对测定结果的影响。采用其它方法定值提供的检测样品,作为x-射线荧光光谱法内控标准样品,采用经验系数法进行基体校正,通过解谱拟合建立校准曲线,校准曲线建立后仪器建立漂移校正程序。实验结果精密度好,各元素的相对标准偏差在0.15%-1.3%。准确度满足生产需求,实验方法可用于快速检测半钢发热剂化学组分。
简介:Thecrystalandmolecularstructureofcopper(Ⅱ)dimericcomplexofS-methyl-B-N-(pyridineN-oxide-2-ylmethylidene)dithiocarbazatewithacetonitrile,[CuL(CH3CN)]2(ClO4)2,wasdeterminedbyX-raydiffraction.ThecomplexcrystalizesinmonoclinicsystemwithspacegroupP21/n,a=7.685(2),6=20.160(6),c=10.847(5)A,B=107.89(3),Z=2,Dc=1.788g/cm3,F(000)=835.8,u=18.17cm-1(Moka,R=0.057.EachCu(Ⅱ)ioninthecomplexissurroundedbyadistortedsquarepyramidal.ThebasalplaneiscomprisedofS,NandOatomsofoneligandtogetherwithaNatomofthesolvent--acetonitrile,whiletheaxialpositionisoccupiedbytheSatomoftheotherligand.ThebondlengthofCu-S(bridging)is3.038A.andCu-Cudistanceis3.700A.
简介:Bytheadditionalreactionofbinuclearcompounds(Me4N)2M2S4(TDT)2(M=Mo,W;H2TDT=H2CH3C6H3S2)withmononuclearcuprouscomplex,twonewM-Cu-SclustersMo2Cu2S4(TDT)2-(PPh3)2·CH3CH2OH(1)andW2Cu2S4(TDT)2(PPh3)2·0.5CH3CH2OH-0.5H2O(2)havebeenpreparedandcharacterizedbyIR,UV-Vis,31PNMRspectroscopy,cyclicvoltammetryandsinglecrystalX-raystructureanalysis.BothcompoundscrystallizeinspacegroupP21/nwithlatticeparametersa=1.0956(3),b=2.2072(3),c=2.4340(3)nm,β=100.36(2)°,V=5.790(3)nm3andZ=4for1anda=1.0965(9),b=2.2135(3),c=2.4317(4)nm,β=99.63(8)°,V=5.819(8)nm3andZ=4for2.Bothmolecularstructurescontainacubane-likeclustercore[M2Cu2S4](M=Mo,W)andtheirskeletonsarealmostthesameexceptforMatoms.Thesyntheses,structuresandspectrumcharacterizationsofthesetwoclustersarediscussed.Thethird-ordernonlinearoptical(NLO)propertyofthetwoclusterswasstudiedbythetechniqueofforwarddegeneratefour
简介:[Co3(1,2-S2C6H4)3(PPh3)3][CoBr3(DMF)].sol(1,sol=CHCl3,O(C2H5)2,H2O)wasobtainedfromthereactionofCoBr(PPh3)3withNa2(S2C6H4)inchloroform.TheCo3coreinthecationof1exhibitsametal-metalbondedisoscelestriangle,inwhichthetwolongerCo-CobondsarebothbridgedbyS2C6H4ligandsontwosidesofthetriangleplanerespectively,whilethebottomshortCo-CobondisbridgedbythethirdbidentateS2C6H4ligand.Aseriesofpolynu-clearcobaltclustercompoundswithphosphine,thiolateand/orsulphurligandswerepreparedbylowoxidationstateCo+withthiolatesinorganicsolvents.Thesetri-,tetra-,hexa-,heptanuclearclustercompounds1-8withvarioustypesofcrystalstructurescanbeviewedasthecondensedpolynuclearcobaltcomplexesthatthecobaltatomframeworkswithsulphurbridgedwerebuiltthroughthesmalltriangularunitsof[Co3S3nL3](n=1,2)withorwithout[CoL](L=PR3,Br,Cl,5-C5H5)fragments.
简介:6/3-(4-Chlorophenyl)-s-triazolo[3,4-b][1,3,4]thiadiazoles(2a-e)and(5a-e)weresynthesizedrespectivelybyintermolecularcyclizationof5-aryl/4-chlorophenyl-4-amino-3-mercapto-1,2,4-triazoles(1a-e)and(4)with4-chlorobenzoicacid/arylacids,whichwerecondensedwithpiperazineunderphasetransfercatalystTBABtoyieldthecorrespondingfreebasesofmonopiperazinederivativesandfollowedtoformwater-solublesalts(3a-e)and(6a-e)withhydrochloricacidingoodyields.Theinvitrobiologicalresultsshowedthatpiperazinegroupconjugatedwiththeabovefusedheterocyclesplayedanimportantroleinantibacterialactivity.ThestructuresofnovelcompoundswereconfirmedbyIR,1HNMR,MSandelementalanalysis.
简介:Sixnewopticallyactivepoly(amide-imide)s(5a-f)weresynthesizedthroughthedirectpolycondensationreactionofN,N'-(4,4'-diphthaloyl)-bis-L-leucine(3)withsixhydantoinderivatives(4a-f).Triphenylphosphite(TPP)/pyridineinthepresenceofcalciumchloride(CaCl_2)andN-methyl-2-pyrrolidone(NMP)weresuccessfullyappliedfordirectpolycondensation.Thepolycondensationreactionsproduceaseriesofnewpoly(amide-imide)s(5a-f)inhighyields,andinherentviscositybetween0.42and0.55dL/g.Theresultingpoly(amide-imide)s(5a-f)werecharacterizedbyelementalanalysis,viscositymeasurements,thermalgravimetricanalysis(TGAandDTG),solubilitytestandFT-IRspectroscopy.
简介:FiveC3/C3fluoroquinolonedimerstetheredwithafusedheterocyclicringofs-triazolo[2,1-b][1,3,4]thiadiazolederivedfromantibacterialquinolonesweresynthesizedandcharacterized,andtheirinvitroantitumoractivityagainstL1210,CHOcelllineswasevaluatedviatherespectiveIC50values.