简介：Analternativerouteforthesynthesisof(-)-10-epi-ct-cyperone1startingfrom(+)-dihydrocarvone2isdescribedbyusinganasymmetricMichaeladditionasakeystep.Theroutefeaturesmoreefficientlyandcanbeperformedinlargescale.

简介：ＩｎｔｒｏｄｕｃｔｉｏｎＡｃｏｎｓｉｄｅｒａｂｌｅｉｎｔｅｒｅｓｔｈａｓｂｅｅｎｓｈｏｗｎｉｎｔｈｅｉｎｖｅｓｔｉｇａｔｉｏｎｏｆｍｉｘｅｄ－ｄｏｎｏｒｍａｃｒｏｍｏｌｅｃ－ｕｌａｒｌｉｇａｎｄｓｃｏｍｐｌｅｘｉｎｇｔｒａｎｓｉｔｉｏｎｉｏｎｓ［１］...

简介：Newmethodsfordehydrogenationofsteroidal2,5（10）-dieneswith2,3-dichloro-5,6-dicyano-1,4-benzoquinone（DDQ）orpyridiniumhydrobromideperbromide（PHP,Py·HBr·Br2）toaromaticAringsteroidinquantitativeyieldinshorttimearedescribed.

简介：Theefficientcycloadditionreactionswerecarriedouttoaffordthenovel3,5-disubstituted-dihydroisoxazolesfrommethylundec-10-enoateandisoxazoles,triazoleandtetrazolo-triazolefrommethylundec-10-ynoate.Thereactionsoccurredunderrelativelymildconditionsandaffordedthedesiredproductsingoodyields.

简介：Threenewlanthanidephenoxyacetatecomplexeswith1,10-phenanthroline,[Nd(POA)3(phen)]2·2C2H5OH(1),[Eu(POA)3-(phen)]2·2C2H5OH(2)and[Sm(POA)2(DMSO)(phen)]2-(ClO4)2(3)(POA=phenoxyacetate,phen=1,10-phenanthroline,DMSO=dimethylsulfoxide),weresynthesizedandcharacterizedbyelementalanalyses,IR,UV-visandFAB-MSspectra.TheirstructuresweredeterminedbysinglecrystalX-raydiffractionanalysis.Incomplexes1and2,thecarboxlyategroupsarebondedtoLn^3+ioninthreemodes:thechelatingbidentate,thebridgingbidentateandthebridgingtridentate.Incomplex3,thecarboxylategroupsarebondedtoSm^3+iononlyinvolvedinonemode:thebridgingbidentate.Theluminescencebehaviorofcomplex2wasalsostudiedbymeansofemissionspectra.

简介：Twenty10-hydrocarbylacridonesand2-methylacridone,1-hydroxyacridoneweresynthesizedfromacridoneandcharacterizedbymp,IR,UV,1HNMRandMS.UsingNd:YAGasalasersource,thesecond-orderharmonicgeneration(SHG)valuesoftheacridonederivativesweremeasuredinpowderstateascomparedwithureapowder.TheresultsshowedthattheSHGvaluesofsomeof10-hydrocarbylacridoneswerehigherthanthatofurea,whileotherswerelower.Althoughthehydrocarbylsubstituents(R)attachedtonitrogenatomofacridoneweredifferentinsizeandelectronegativity,theyhadalittleeffectontheSHGvaluesof10-hydrocarbylacridones.Substituents,suchasmethylorhydroxygroupconnectedtothephenylring,causedalittleeffectontheSHGvalues,too,comparedwithacridone.TheabilityofRtopushelectrontowardthenitrogenatomortopullelectronfromthenitrogenatomplayanimportantroleonthemaximumwavelengthesofUV-visibleabsorptionofacridonederivatives.

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简介：利用水热合成方法合成了2个新的配位聚合物[Ag（4,4′-bpy）（H2PO4）].2H2O（1）和[Cu4（L）8H4]（2）（4,4′-bpy=4,4′-联吡啶,L=4-咪唑基苯甲酸）,并通过元素分析、红外光谱和X-射线单晶衍射方法确定了该化合物的晶体结构.结构分析表明化合物1属于单斜晶系,P2/c空间群,晶胞参数a=8.4909（17）nm,b=8.7284（17）nm,c=18.498（4）nm,β=100.99（3）°,V=1.3458（5）nm3,Z=4,R1=0.0362,ωR2=0.0966.化合物1展示了一个一维的链式结构.化合物2属于单斜晶系,C2/c空间群,晶胞参数a=24.509（5）nm,b=18.957（5）nm,c=17.246（5）nm,β=119.807（5）°,V=6.953（3）nm3,Z=4,R1=0.0455（3564）,ωR2=0.1519（6161）.化合物2中存在着丰富的π…π堆积作用.

简介：Thesynthesisofanewtypeofhetero-macrocyclicpolyether2,3-henzo-1,4,7,13-tetraoxa-10-selenacyclopentadeca-2-eneisdeseribed.

简介：有N-(2-propionic酸)的新奇金轧(III)建筑群-salicyloylhydrazone(C10H10N2O4，H3L)并且1,10-phenanthroline(C12H8N2，phen)被准备并且描绘。水晶结构[Gd(H2L)(HL)-(H2O)3]2潲楰湯捩???慳楬祣潬汹?票牤穡湯??ㄠ??桰湥湡桴潲楬敮???????楢慯瑣癩瑩？

简介：Oximeswereoxidizedtothecorrespondingcarbonylcompoundsingoodtohighyieldsbyenvironmentallyfriendlyandgreenoxidant,H_2O_2catalyzedbymontmorilloniteK-10supportedcobalt(Ⅱ)chloride.

简介：Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.

简介：用紫外、荧光、圆二色光谱法研究了氨基黑10B与牛血清白蛋白（BSA）结合反应的光谱特性.结果表明氨基黑10B对牛血清白蛋白的荧光有猝灭作用,其猝灭类型属于静态猝灭;得到了不同温度下的结合常数和结合位点数;利用Gibbs-Helmholtz方程计算得到该猝灭反应的热力学参数,表明氨基黑10B主要以氢键和范德华力与BSA相互作用;圆二色和同步荧光光谱显示氨基黑10B对BSA构象产生了影响.

简介：采用铜（Ⅱ）盐和3,5-二氯水杨醛缩丝氨酸以及4,4′-联吡啶在乙醇水溶液中合成了具有二维层状的配位聚合物.通过元素分析、红外光谱对该配位聚合物进行了表征,并利用X射线单晶衍射仪对其结构进行了鉴定.晶体结构表明,该标题配合物属三斜方晶系,空间群C2/c,晶胞参数为a=2.711（3）nm,b=2.711（3）nm,c=4.977（5）nm;α=90.00°,β=90.00°,γ=120.00°,V=3.1678nm^3,Z=18,Dc=1.173g·cm^-3,F（000）=11448,μ=0.807mm-1,R1=0.0788,wR2=0.1872.

简介：利用密度泛函理论（DFT）中的B3LYP方法,在6-311G（d）基组的水平上系统研究了CaSin（n=1-10）团簇的几何构型、稳定性与光谱（红外与拉曼）性质.研究结果表明,CaSin团簇构型是在CaSin-1构型上戴帽1个原子而形成的;当n≥4,CaSin团簇的最低能量结构均为立体构型;Ca原子的掺杂降低了体系的化学稳定性;CaSi3与CaSi5是幻数结构;在相同的观察频段内,CaSi3团簇的红外与拉曼活性在低频段均表现较好,而在高频段拉曼活性则表现较差,与之不同的是CaSi5团簇的红外与拉曼活性在整个频段内都表现的较好.

简介：“十一五”期间，山西省化工研究所在塑料助剂领域提出了瞄准“聚烯烃、工程和改性塑料以及聚氨酯”三大市场目标，开展“成核剂、抗氧剂、光稳定剂、偶联剂”四大功能助剂创新研究的“四纵三横”战略。

简介：建立了微波消解-电感耦合等离子体质谱（ICP-MS）法快速测定人发铝、铬、砷、锰、镍、铜、镉、钡、铅、汞10种微量元素的分析方法。通过优化试样前处理手段,以Sc、Ge、In、Bi为内标元素,用ICPMS法测定人发标准物质中的10种微量元素,同时进行精密度,准确度以及人发样品中加标回收实验,验证检测方法的适用性。结果表明,用微波消解-ICP-MS法同时测定10种微量元素标准曲线线性关系较好（r〉0.9994）,元素检出限为0.002-0.012μg/L,样品加标回收率在92.4%-112%,验证微波消解-ICP-MS法是较为理想的人发样品检测分析方法。

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简介：合成了通式为K10H5[Ln(PMo7W2VO39)2].nH2O(Ln-La^3+,Ce^3+,Pr^3+,Nd^3+,Sm^3+,Eu^3+,Gd^3+,Dy^3+,Yb^3)的9种五元新型杂多配合物，并用元素化学分析，TG，ICP，IR，UV，31^1P,51V-NMR,ESR,XPS,XRD进行了表征，结果表明新配合物仍保持Keggin结构，稀土元素处于配合物的内界。借助TG－DTA，不同温度下的IR，XRD的水溶性实验考察了新配合物的热解性质，得出了热稳定的温度范围为400℃-500℃，为催化研究提供了依据。

简介：Asurface-renewabletris(1,10-phenanthroline-5,6-dione)iron(Ⅱ）hexafluorophosphate(FePD)modifiedcarbonceramicelectrodewasconstructedbydispersingFePDandgraphitepowderinmethyltrimethoxysilane(MTMOS)basedgels.TheFePD-modifiedelectrodepresentedpH-dependentvoltannetricbehavior,anditspeakcurrentswerediffusion-controlledin0.1mol/LNa2SO4+H2SO4solution(pH=0.4).Inthepresenceofiodate,clearelectrocatalyticreductionwaveswereobservedandthusthechemicallymodiffiedelectrodewasusedasanamperometricsensorforiodatencommonsalt.Thelinearrange,sensitivity,detectionlimitandresponsetimeoftheiodatesensorwere5×10^-6-1×10^-2mol/L,7.448μA·L/mmol,1.2×10^-6mol/Land5s,respectively.Adistinctadvantageofthissensorisitsgoodreproducibilityofsurface-renewalbysimplemechanicalpolishing.