简介:Graphitic碳氮化物(g-C3有向在可见轻照耀下面的4-nitrophenol的降级的高photocatalytic活动的N4)被蚀刻的HCl准备由氨中立化列在后面。准备样品的结构,形态学,表面区域,和photocatalytic性质被学习。在处理以后,g-C3N4从几测微计减少了到几百纳米,和g-C3N4从11.5 增加了;m2/g到115 ;m2/g。同时,g-C3N4显著地在可见的光下面向4-nitrophenol的降级在处理以后被改进照耀。小粒子g-C3N4是5.7次体积g-C3为水处理和环境补习为未来应用使它成为有希望的可见轻光催化剂的N4,。
简介:Thedifferentregioselectiveandstereoselectiveproductswereobtainedbythereductionofstigmast-4,22-dien-3,6-dionewithNaBH4-CH3OHwhendifferentkindsofmetalionswasaddedtothereaction.
简介:SYNTHESIS AND SPECTRA STUDIES OF TRANSITION METAL COMPLEXES DERIVED FROM 2, 4-DINITROPHENYL HYDRAZINESYNTHESISANDSPECTRASTUDI...
简介:ELECTRON TRANSFER BETWEEN Eu3+ AND Ce3+ IN SrMgF4 MATRIXELECTRONTRANSFERBETWEENEu3+ANDCe3+INSrMgF4MATRIX¥YingWU;Ch...
简介:Lophenol,cholest-4α-methyl-7-en-3β-ol(1),obtainedfromDracaenacochinchinensis(Lour.)S.C.Chen,wasstructurallymodified.Itwasacetylatedtoprotect3β-hydroxylgroup,andthenoxidisedbyseleniumdioxideinaceticacidtogivecholest-4a-methyl-8-en-3β,Ta-dioldiacetate(3).Thiscompound3isunstableinchloroformsolutionorwhenheatedandeasilyconvertedtoadienecompound,cholest-4a-methyl-7,14-dien-3β-olacetate(4).Thestructuresof3and4wereelucidatedbymeansofIR,^1HNMR,^13CNMRandMS,andtheabsoluteconfigurationof3wasestablishedbyX-raycrystallography.Thepropertyof3wasalsodiscussedinthispaper.Both3and4arenewcompoundsandwerereportedforthefirsttime.
简介:3-(2-Hydroxyphenyl)-6-(4-nitrophenyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine,C16H11N5O3S,waspreparedbythecyclizationof3-(2-hydroxyphenyl)-4-amino-5-mercapto-1,2,4-triazolewith2-bromo-4-nitroacetophenone.Thecompoundwascharacterizedbymeansofelementalanalysis,IR,1HNMR,13CNMR,massspectrometry,andX-raydiffraction.ThecompoundcrystallizesinamonoclinicsystemwithspacegroupCc,a=2.1853(4)nm,b=2.1192(5)nm,c=1.3526(3)nm,β=95.21(2)°,V=6.238(2)nm3,Dcalcd.=1.505Mg/m3,Z=16,F(000)=2916,R1=0.0501,wR2=0.0427.Acomparisonbetweenthecrystalstructuresof1,2,4-triazolo[3,4-b][1,3,4]thiadiazineand1,2,4-triazolo[3,4-b][1,3,4]thiadiazolewasmadeinthestructuralview.Atwo-dimensionalnetworkisformedbyhydrogenbondsandπ-πstackinginteractions.
简介:Ionothermalsynthesiswasusedtoprepareanovelaminoacidcontaininghybridzincophosphatemonomer,[Zn(HPO4)(H2PO4)][C6H10N3O2](denotedasZnPO-CJ58).Theinorganicframeworkof[Zn(HPO4)(H2PO4)]·[C6H10N3O2]consistsof4-memberedringsformedbyZnO3OHisandPO2(OH)2tetrahedra.TheHPO4andaminoacidmoietieshangontheZncenter.Suchaframeworkisstabilizedbyextensivemultipointhydrogenbondsinvolvingthephosphateunitsandhistidinemoleculestoformapseudo-3Dsupramolecularstructure.ItisnoteworthythatZnPO-CJ58isthefirstzincphosphateclusterwithaminoacidactingastheligand.Itexhibitsphotoluminescenceexcitedatawavelengthof220nm.Interestingly,ZnPO-CJ58cantransformintoalayeredstructure(C6H10N3O2)Zn2·(HPO4)(PO4)·H2O(ZnPO-CJ36)throughfurtherreactingwithwaterorzincacetatedihydrateinwaterat85℃for1h.Thisworkwillbehelpfulforthesynthesisofcrystallineinorganic-organichybridmaterialswithbiofunctionalmolecules.
简介:标题化合物C22H29N3O3以简单易得的试剂为原料,在乙醇溶剂中,微波辐射下经两步多组分反应合成得到.其结构通过单晶X射线衍射法确定,晶体属三斜晶系,空间群P-1,相对分子质量Mr=383.48,晶胞参数a=1.14770(12)nm,b=2.0657(2)nm,c=1.00780(12)nm,V=2.1841(4)nm3,Z=4,晶胞密度Dc=1.166mg/m3,吸收系数μ=0.078mm-1,单胞中电子的数目F(000)=824.晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子为R1=0.0709,wR2=0.1405.在晶体结构中新形成的噌啉环为近似于共平面结构,而其中的哒嗪环则为船式构象.
简介:2-Phenyl-1,2,3-triazole-4-formylhydrazine(2)waspreparedbyhydrazinolysisofthecorrespondingester1.Reactionof2withCS2/KOHgavetheoxadiazolederivatives(3)whichvia,Mannichreactionwithdifferentdialkylaminesfurnished3-N,N-dialkylderivatives(4a-c).Also,condensationof2withappropriatearomaticacidinPOCl3yieldedoxadiazolederivatives(5a-c),orwithaldehydesandketonesaffordedhydrazones(6a-c).Cyclizationof(6a-c)withaceticanhydridegavethedesireddihydroxadiazolederivatives(7a-c).Ontheotherhand,reactionofdithiocarbazate(8)withhydrazinehydrategavethecorrespondingtriazolederivative(9)whichontreatmentwithcarboxylicacidsinrefluxingPOCl3yieldeds-triazole[3,4-b]-1,3,4-thiadiazolederivatives(10a-b).ThestructuresofalltheabovecompoundswereconfirmedbymeansofIR,1HNMR,MSandelementalanalysis.
简介:Asimpleeffectivesynthesisofbis(dihydropyrimidinone-4-yl)benzenederivatives,usingboricacidascatalyst,fromisophthalicaldehydeorterephthalicaldehyde,1,3-dicarbonylcompoundsandureaorthioureainglacialaceticacidwasdescribed.AstheexpansionoftheclassicalBiginellireaction,thismethodhastheadvantageofexcellentyields83%-94%andshortreactiontime0.5-1.5h.
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