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1.
SHEN Cheng 《结构化学》1997,(1)
1INtrODUCTIONThecrownethercomPOundsandtheirderivativeshavecontinuouslyattractedconsiderableattentioneversincetheywerefirstreportedin1967illbecauseoftheirexcellentcapacitytoattachmetalatomstoformcomplexes.Nowadaystheyareappliedextensivelyinchemistry,biology,medicine,agriculture,metallurgyandmanyotherfields.Manypapersonsynthesesofnewcrownethers,theirstructuredeterminationandcharactersareoftenpublished.Inthestudiesthenitrifiedreactionofcrownetherisknownasasignificantwaybywhichfunctionalgroup… 相似文献
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1INTRODUCTIONRecently,considerableattentionhasbeenpaidtotheinvestigationofcoordinationchemistryofmanganeseindifferentoxidationstatesnotonlybecauseofthediscoveryoftightlyboundmanganeseatomsinvariousbiomolecules[libutalsobecauseoftheirinterestingstructural,magneticandspectroscopicfeatures.Wehavepreparedseveralcomplexesofmanganese(n)withdifferentligands.Thestructuresandfeaturesofthesecompoundsarestudiedsystematically.Inthispaperwedescribethestructureofthecomplexwiththeligandsofphenanthroline… 相似文献
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1mTRODUCTION.Theimportantprogressinmagnetostructuralchemistryinthepastfewyearsisthesystematicdevel0pmentofstructurallyorderedbimetalliccompound"'.Thefami-liesofcrystallineandam0rphouscomplexes[MM'(cdta)j.xH,O(M,M'maybethefirsttransitionmetalorthesecondmaingroupelements)haveprovidedniceex-amplesofstructuralversatilityinmagneticstudiest2-6i,wherequiteafewstructuresmentionedabove,includingbimetallicandhomometalliccompoundscomprisingcop-per0rothermetalatoms,havebeeninvestigated"-".Ontheother… 相似文献
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INTRODUCTIONPalladiumcomplexesplayanimportantroleinmanycatalyticreactions,especial-lyincarbonylationofolefins.InordertostudytherelationshipbetweenthestructureandproPertyofpalladiumcomplexcatalyst,thetitlecomplexwassynthesizedanditsstructurewascharacterizedbyX-raydiffractionmethod.2EXPERmENT2.1SynthesisAmixtureofmorpholine(o-lmol)andCuCl(O.2mol)inmethanol(8OmL)wasrefluxedfor6h.AftercoolingthesolutionwasfilteredrePeat-edlyunti1theclearfiltratewasobtained.BrownCuCl.C'H,NOcrystalswer… 相似文献
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1INTRoDUCTIONInvestigationsofthecoordinationchemistryofcopper(I)continuebeingstimu-latedbyinterestindevelopingmodelsforcopperproteinandinunderstandingthefac-torswhichgivetotheseeminglyinfiniteverityofdistortionformregularstereo-chemistryobservedinCu(U)comp1exest"23.Duetotheuniquecoordinationpolyhe-dron,importanceinbiochemistryandtheireaseofpreparation,tripodalcopper(I)complexeshaveattractedmucha!tentioninadditiontotheirspecialchemicalphysicsandstructureproperties.Wereportherethesynthesis… 相似文献
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标题化合物由Ｌａ（ＮＯ３）３·ｎＨ２Ｏ,１,１０－邻菲罗啉（ｐｈｅｎ）和乙酰丙酮等在无水乙醇和水的混合溶剂中合成并用ＩＲ谱和Ｘ射线结构分析进行表征。晶体学数据如下：Ｃ２４ Ｈ２１ＬａＮ８Ｏ１４,Ｍｒ＝ ７８４．４０, 三斜, Ｐ１, ａ＝ ７．１２４（１）, ｂ＝ １１．０４７（２）, ｃ＝ １９．３９３（４）, α＝ ８１．１０（３）, β＝ ８７．７９（３）, γ＝ ７４．３６（３）°, Ｖ＝ １４５２．０（５）３, Ｚ＝ ２, Ｄｃ＝１．７９４ｇ／ｃｍ ３, Ｆ（０００）＝ ７８０, μ（ＭｏＫα）＝ １．５５７ｍ ｍ － １。化合物由阳离子〔ｐｈｅｎＨ〕＋ 和配合阴离子〔Ｌａ（ＮＯ３）４（Ｈ２Ｏ）（ｐｈｅｎ）〕－ 及一个结晶水分子组成。配合阴离子中以Ｌａ原子为中心,周围被２ 个Ｎ原子（来自ｐｈｅｎ）和９ 个Ｏ原子（来自ＮＯ３－ 和Ｈ２Ｏ）所占据,构成较为罕见的１１ 配位。晶胞中两两阳离子〔ｐｈｅｎＨ〕＋ 及两两配体ｐｈｅｎ 平面之间均相互平行堆积,并有多种类型的氢键存在,这些都可以降低能量,有利于化合物在晶体中的堆积。 相似文献
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SUN Shu Qing WU Pei Ji ZHU Dao Ben 《结构化学》1999,18(2)
１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅＮｉ（ｄｍｉｔ）２ｍｏｌｅｃｕｌｅｓｇｉｖｅｒｉｓｅｔｏａｎｕｍｂｅｒｏｆｍｏｌｅｃｕｌａｒｃｏｎｄｕｃｔｏｒｓ〔１，２〕ｉｎａｄｄｉｔｉｏｎｔｏｓｕｐｅｒｃｏｎｄｕｃｔｏｒｓ〔３，４〕．Ｔｈｅｍｕｌｔｙｓｕｌｆｕｒｆ... 相似文献
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1INTRoDUCTIoNThiomolybdate(thiotungstate)isafundamentalunitoPsomemolybdenumen-zymesandplaysanimportantroleincoordinationchemistryasaligandforothermet-alstoformanalogouscompoundsofmetalloproteinst'3.Recentlyinterestingnonlinearoptical(NLO)propertieshavebeendiscoveredforthetypeofMo(W)-Cu(Ag)-Sclusterst2.33.Bythevarioussyntheticmethodsseveralhundredmixedmetalclustersandcomplexes,Mo(W)-M-S(M=transitionmetal),havebeensynthesizedt'i.AmongthesecompoundsthecasesofMbeingCu,Ag,Feareusualwhile… 相似文献
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１ ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｙｅａｒｓ,ｔｈｅｚｉｎｉｃｃｏｍｐｏｕｎｄｓｃｏｎｔａｉｎｉｎｇｓｕｌｆｕｒａｎｄｎｉｔｒｏｇｅｎａｔｔｒａｃｔｍｏｒｅａｎｄｍｏｒｅａｔｔｅｎｔｉｏｎｂｅｃａｕｓｅｏｆｔｈｅｉｒｄｅｅｐｒｅｌａｔｉｏｎｓｈｉｐｗｉｔｈｂｉｏ－ｉｎｏｒｇａｎｉｃｃｈｅｍｉｓｔｒｙ〔１〕．Ｚｉｎｉｃｓｕｌｆｉｄｅｐｌａｙｓａｎｉｍｐｏｒｔａｎｔｒｏｌｅｄｕｅｔｏｉｔｓｓｉｇｎｉｆｉｃａｎｔｉｎｖｏｌｖｅｍｅｎｔｉｎｔｈｅｓｔｕｄｙｏｆｔｈｅｐｈｏｓｐｈｏｒｓ,ｓｅｍｉ… 相似文献
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1 INTRODUCTION4,4' bipyridine( bipy) is a good candidate for building open framework struc ture because of their rodlike rigidity and length.Framework structures formed bytransition metalsbridged by bipy vary with metaland anion.The structures of Zn bipy system include interpenetrating square grid sheets〔 Zn( bipy) 2 ( H2 O) 2 〕Si F6〔1〕,two dimensionallayer〔 Zn( bipy) ( H2 O) 4 〕( NO3) 2 · bipy〔2〕,〔 Zn( bipy) ( H2 O) 4 〕 ( NO3) 2 · 2 bipy· 3 H2 O〔2〕 and〔 Zn( bipy)… 相似文献
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１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｙｅａｒｓ,ａｓｅｒｉｅｓｏｆｌａｎｔｈａｎｉｄｅ ａｌｕｍｉｎｉｕｍｃｏｍｐｌｅｘｅｓｗｈｉｃｈａｒｅａｃｔｉｖｅｆｏｒｐｏｌｙ ｍｅｒｉｚａｔｉｏｎｏｆｏｌｆｉｎｓ〔１〕ｈａｖｅｂｅｅｎｒｅｐｏｒｔｅｄ．... 相似文献
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IntroductionCertainlanthanideionspossessharpemissionlinesinthevisibleregions.Thepossibilityoftransferringenergyeffi cientlytotheseionsbywayofstronglyabsorbingtransitionscharacteristicoforganicligandshasspurredmanyworkerstoinvestigatelanthanidechelatesaspotentiallasermaterials .Amongthemtheternarycomplexesofeuropium(III)andter bium(III)withtris(β diketonates)andanneutralligandhaveespeciallyattractedmuchattentionfortheirstronglumi nescence.Itmakethemaextensiveapplicationsindevelop mentofnewl… 相似文献
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A new Zn(Ⅱ) complex, [Zn(L)(IPP)(H2O)]·2H2O(1, H2 L = 3-carboxy-1-carboxymethyl-2-oxidopyridinium and IPP = 2-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol), was synthesized under hydrothermal conditions and its structure was determined by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 8.5023(17), b = 9.945(2), c = 15.573(3) ?, α = 95.87(3), β = 102.56(3), γ = 100.73(3)o, V = 1248.7(4) ?3, Z = 2, C27H22N5O9 Zn, Mr = 625.87, Dc = 1.665 g/cm3, F(000) = 642, μ(Mo Ka) = 1.053 mm-1, R = 0.0474 and w R = 0.1352. In 1, one L2-, one IPP and one water molecule coordinate to the same Zn(II) atom to give a discrete complex with two lattice water molecules. Adjacent [Zn(L)(IPP)(H2O)]·2H2O molecules interact through π-π stacking between two IPP ligands to form a supramolecular chain. The N–H···O and O–H···N hydrogen bonds further stabilize the supramolecular chain structure of 1. The solid state luminescent property of 1 was also studied. 相似文献
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11NTRODUCTIoNNowadaysheteropoly-complexesaremorenoticeableespeciallyinthefieldofcat-alystbecauseinsomeorganicsynthesestheycanbeusedasanoxidativetypeoracidictypecatalystorasboth.Ontheotherhandtherearemanytheoreticaltopicsaboutheteropolycomplexinwhichmanyscientistsareinterested.Inthefieldofpolyacidchemistrythesynthesisofanewheteropolycomplexisanimportantaspect.Molybdenumcanformbinaryheteropolymolybdatecomplexcompoundswithmanymetalandnon-metalelements.Indifferentcompoundstheratioofheteroatoms… 相似文献
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lINTRODUCTIONThefirstheteronucleartransitionmetalclusterHFeCo,(Co),,wassynthesizedbyChinit13in196Obyusingthepyrolysisofmeta1carbonyldimers.Analysisofcar-bonylIRspectraandX-raypowderpatternsindicatedthatthiscompoundisisostruc-tural.withCo'(CO),,andthushasC,.symmetry(".MaysE'-'ihascarriedoutIRspectraandmassspectraonthiscompoundandkineticisotopestudiesontheprotona-tionoftheanion[FeCo,(CO),,j-,andproposedonthebasisofthisevidencethatthehydrogenatommightbelocatedinthecenterofthecluster.… 相似文献
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1 INTRODUCTION In the last few years, much attention has been paid to the molecular structure and biological activity of coordinated complexes in inorganic chemistry field. Ni(Ⅱ) is one of the commonest transition metals with two coordination numbers (4 and 6)[1～3]. Ge- nerally speaking, Ni(Ⅱ) coordination mode depends on the structure of ligand, solvent and reaction con- ditions, among which ligand plays a decisive role and determines not only the molecular structure of the complex bu… 相似文献
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１ ＩＮＴＲＯＤＵＣＴＩＯＮＨｅｔｅｒｏｍｅｔａｌｐｏｌｙｎｕｃｌｅａｒｃｏｍｐｌｅｘｅｓｈａｖｅｂｅｅｎｔｈｅｓｕｂｊｅｃｔｏｆｍａｎｙｒｅｃｅｎｔｓｔｕｄｉｅｓｔｏｅｌｕｃｉｄａｔｅｔｈｅｍｅｃｈａｎｉｓｍｏｆｓｐｉｎｃｏｕｐｌｉｎｇｂｅｔｗｅｅｎｔｈｅｍｅｔａｌｉｏｎｓ〔１,２〕,ｍｉｍｉｃｋｉｎｇｔｈｅａｃｔｉｖｅｓｉｔｅｏｆｓｏｍｅｍｅｔａｌｅｎｚｙｍｅｓｃｏｎｔａｉｎｉｎｇｄｉｓｓｉｍｉｌａｒｍｅｔａｌｉｏｎｓ,ｓｕｃｈａｓｃｙｔｏｃｈｒｏｍｅｏｘｉｄａｓｅａｎｄｓｕｐｅｒｏｘｉ… 相似文献
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The structure of the title adduct comprises a phenanthroline derivative 2-phenyl-imidazo[4,5-f]1,10-phenanthroline and a methanol.The composition of the crystalline adduct was characterized as C19H12N4.CH3OH.It belongs to orthorhombic system,space group Pna21 with a=1.3693(4)nm,b=2.2988(7)nm,c=0.51338(15)nm,V=1.6160(8)nm^3.Z=4,and final R1=0.0423.wR2=0.1012 .Crystal structure shows that all the 19 carbon atoms and 4 nitrogen atoms are coplanar.The bond length data indicated that a very extensive conjugation system was formed.This conjugation makes the compound being a potentially excellent energy transformer used for luminescent materials. 相似文献
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ZHANG Min KONG Fan Rong 《结构化学》1999,18(2)
１ＩＮＴＲＯＤＵＣＴＩＯＮＭｅｔａｌｉｃｃｏｍｐｌｅｘｅｓｏｆｓｃｈｉｆｂａｓｅｓｈａｖｅａｔｒａｃｔｅｄｔｈｅａｔｅｎｔｉｏｎｏｆｒｅｓｅａｒｃｈｅｒｓｄｕｅｔｏｔｈｅｉｒａｎｔｉｖｉｒａｌ，ｆｕｎｇｉｓｔａｔｉｃ，ａｎｄｃａｔａｌｙｔｉｃａｃｔｉ... 相似文献