Author''''s Index Vol.13.2002

Author Index Vol.13.2002 AISA H.A. (0515) AN T.Y. (0623) AN Y.L. (0448) BAI A.P. (0296) BAI D.L. (0023) BAI D.L. (0809) BAI J. (0351) BAI L. (0029) BAO G.H. (0237) BAO G.H. (0955) BAO J.K. (0223) BAO J.X. (0515) BEI J.Z. (0033) BI Z.M. (0535) BIE P.Y. (0167) BIE P.Y. (0830) BIE P.Y. (0935) BO T. (0269) BO T. (0877) BU H.T. (0456) CAI B. (0327) CAI B. (0851) CAI J.C. (0113) CAI J.C. (0201) CAI J.C. (0515) CAI J.C. (0818) CAI J.X. (0617) CAI M…     

Synthesis of New Benzyl Substituted Titanocene Complexes and Their Novel Intramolecular Cyclization

BecauseoftheimPOrtanceofthecyclopentadieneligandinorganometallicchendng,muchattenhonhasbeenpaidtotheSynthesisOfneu'cycloPentadienesandtheirtIansitionmetalcomplexes.PreviouspaPersinthisfieldaremainlyconcernedwiththeintroduchonofsimpleringSUbStitUentS,suchasCH-,Me5-,Soue3-.InrecentyearswehavedevelopedaseriesofcyclopentadieneswiththechonalgrOuPsubshtUentSwhicharecapableofchelatingwiththemetalandweboyeemp1oyedthemintheSynthesisoftitanocenedichlorides11`].AInongthem,benZylsubStitutedcyc1o…     

AUTHOR INDEX TO Vol. 15, 2004

AUTHOR INDEXAl X.P.Al X.P.AN L.ANT.C.BAI D.R.BAI L.BAI SP.BAI YJ.BAI Z.L.BAIZ一L.BAOJ‘C、BAOW一L.BAO W.L.BEHRENBRUCH P.BIZ一M.BIANQ一H.Bl人NQ.H.BIAN Z.X.BOTBUT P.P,H.(0 127)(0 286)(1303)(0005)(0212)(0214)(1505)(1029)(1269)(0845)(1 179)(1015)(1327)(1276)(1063)(1071)CAIC一X.CAI C.X.CAI D.MCAI G.L.CAI H.CAIM一2.CAI M.Z.CA百5 .M.CAI S.Q.CAI T.X.CAI Y.CAI Y.CAI Z.T.CAI Z.T.CAI Z.T.CAO J.X.CAO J.XCAO L.CAO L.CAO L.H.CAO…     

Author Index Vol.10, 1999

ANC.C.(0781)ANJ.(0697)BAID.L.(0281)BAID.L.(0733)BAIF.L.(0953)BAOX.H.(0083)BEIJ.Z.(0327)BIS.P.(0247)BIANJ.(0697)CAIJ.C.(0201)CAIL.T(1045)CAIM.S.(0027)CAIQ.(0335)CAIT.X.(0083)CAIZ.G.(0257)CAIZ.T(0325)CAOC.N.(1003)CAOG.F(0441)CAOH.Y(0731)CAOS.Q.(0193)CENW.(0111)EENW.(0547)CENY.Z.(0401)CHANGJ.B.(0273)CHANGJ.B.(0341)CHANGJ.B.(0357)CHANGW.B.(0495)CHENC.F.(0059)CHENC.X.(0033)CHENC.X.(0131)CHENC.X.(0391)CHENG.(0247)CHENH.(0147)CHENH.(…     

CO_2 HYDROGENATION OVER SiO_2－SUPPORTED HETEROBINUCLEAR METAL COMPLEX CATALYSTS

ＣＯ_２　ＨＹＤＲＯＧＥＮＡＴＩＯＮ　ＯＶＥＲ　ＳｉＯ_２－ＳＵＰＰＯＲＴＥＤ　ＨＥＴＥＲＯＢＩＮＵＣＬＥＡＲ　ＭＥＴＡＬ　ＣＯＭＰＬＥＸ　ＣＡＴＡＬＹＳＴＳＣｈａｎｇＰｉｎｇＳＨＡＯ（ＤａｌｉａｎＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉｃａｌＰｈｙｓｉｃｓ，...     

Author Index Vol.14.2003

ABLIZ Z. (0499) AKAO T. (1271) AN L. K. (0557) AN T. Y. (0489) ANTZUTKIN O. (0188) BAI H. X. (0290) BAI Q. (0294) BAI Q. (0824) BAO J. C. (1171) BAO L. J. (0503) BAO W. L. (0239) BAO W. L. (0993) BAO X. H. (0087) BAO X. P. (0115) BIE P. Y. (0441) BO Q. B. (0197) BOSTR諱 D. (0188) BU X. Z. (0557) CAI C. X. (1171) CAI G. L. (0094) CAI H. X. (1189) CAI Q. H. (0523) CAI R. X. (1163) CAI S. Q. (0720) CAI T. X. (0748) CAI W. …     

Synthesis of Pharmacologically Active Bis(indolyl) and Tris(indolyl) Derivatives Using Chlorotrimethylsilane

Chlorotrimethylsilane is found to be a comparatively fast and efficient catalyst for carrying out electrophilic substitution reactions of indoles with various aldehydes/ketones/triethylorthoformate, yielding excellent amount of bis(indolyl)methanes/tris(indolyl)methanes. The merits of this protocol are avoidance of any external energy source, minimal reaction time, simple and easy procedure and high yield under solvent free room temperature condition. The versatility of this method has been tested with various aldehydes/ketones and received satisfactory results.     

Trigonal-prismatische Nb6-Einheiten in Verbindungen des Typs A3[Nb6SBr17] (A = Tl,K, Cs)

Trigonal-prismatic Nb₆-Units in Compounds of the Type A₃[Nb₆SBr₁₇] (A = Tl, K, Cs) The new compounds A₃[Nb₆SBr₁₇] (A = Tl, K, Cs) were synthesized and their lattice parameters were calculated from indexed X-ray powder patterns. An intensity measurement based on a single-crystal of Tl₃[Nb₆SBr₁₇] was performed with an automatic four-circle diffractometer (a = 1704.9(1) pm, b = 1862.8(3) pm, c = 932.51(7) pm; β = 90.747(7)°, V_m = 445.9(3) cm³/mol; C2/c, Z = 4). The structure refinement confirmed consistency with the Rb₃[Nb₆SBr₁₇] structure, found previously. The comparison of both structures yielded no significant differences concerning the distances within the sulfur-centered Nb₆S cluster core. Extended Hückel calculations revealed a maximum of the niobium–niobium overlap populations for (the actual present number of) 14 electrons occupying metal–metal bonding states.     

Preparation of core-shell polymer colloid particles by encapsulation

 By means of heterocoagulation anionic poly-[styrene] particles were coated with smaller electrosterically stabilised cationic particles of poly-[butyl methacrylate]. On heating the heterocoagulated units 45 °C above the glass transition temperature of poly-[butyl methacrylate], as predicted theoretically, the latter polymer spread over the surface of the poly-[styrene] particle to give a composite particle with a core-shell structure. It was found that the extent of packing of the small particles on the larger core particle was a critical feature of the coating process. Received: 12 September 1996 Accepted: 18 September 1996     

新型准轮烷的合成及性质研究——丁烷基紫精与葫芦[6]脲的超分子自组装

通过葫芦[6]脲(CB[6])与丁烷基紫精(BV)在水溶液中于室温下进行超分子自组装, 得到一种新型的准轮烷(BVCB), 并通过¹H NMR, IR, 质谱, 元素分析对其结构进行了表征, 证实CB[6]位于BV的脂肪链上通过非共价键与BV结合, 并且 CB[6]与BV的结合摩尔比为2∶1; 通过热重分析(TGA)、紫外-可见吸收(UV-vis)和化学还原等方法对其性质进行了研究, 证实了BVCB比BV有更高的热稳定性、UV-vis吸收和更强的氧化能力; 盐效应表明 NaI是BVCB优良的沉淀剂; 环境扫描电镜(ESEM)证实BVCB比BV具有较强的刚性和较差的结晶能力.     

N，N＇－二（乙酰芳香环）－穴醚［2，2］的合成

Ｎ，Ｎ＇－二（乙酰芳香环）－穴醚［２，２］的合成余江，许振华，徐光宪（北京大学化学与分子工程学院，稀土材料化学及应用国家重点实验室，北京，１００８７１）关键词大环，穴醚［２，２］，ＨＴＴＡ穴醚（Ｃｒｙｐｔａｎｄ）是含有Ｏ及Ｎ和Ｓ等杂原子的多聚大环化合...     

HEH[EHP]从H2SO4介质中萃取Er（Ⅲ）的动力学和机理

本文采用充分混合法研究了HEH〔EHP〕-正庚烷从H_2SO_4介质中萃取Er(Ⅲ)的动力学,考察了水相酸度、硫酸根离子浓度和萃取剂浓度对萃取速率的影响,提出了萃取速率方程,并讨论了萃取机理。     

Bis(trimethylsilyl)amide und -methanide des Yttriums — Molekülstrukturen von Tris(diethylether-O)lithium-(μ-chloro)-tris[bis(trimethylsilyl) methyl]yttriat,solvensfreiem Yttrium-tris[bis(trimethylsilyl)amid] sowie dem Bis(benzonitril)-Komplex

Bis(trimethylsilyl)amides and -methanides of Yttrium — Molecular Structures of Tris(diethylether-O)lithium-(μ-chloro)-tris[bis(trimethylsilyl)methyl]yttriate, solvent-free Yttrium Tris[bis(trimethylsilyl)amide] as well as the Bis(benzonitrile) Complex The reaction of yttrium(III) chloride with the three-fold molar amount of LiE(SiMe₃)₂ (E = N, CH) yields the corresponding yttrium derivatives. Yttrium tris-[bis(trimethylsilyl)amide] crystallizes in the space group P3 1c with a = 1 636,3(2), c = 849,3(2) pm, Z = 2. The yttrium atom is surrounded trigonal pyramidal by three nitrogen atoms with Y? N-bond lengths of 222 pm. Benzene molecules are incorporated parallel to the c-axes. The compound with E = CH crystallizes as a (Et₂O)₃LiCl-adduct in the monoclinic space group P2₁/n with a = 1 111,8(2), b = 1 865,2(6), c = 2 598,3(9) pm, β = 97,41(3)° and Z = 4. The reaction of yttrium tris[bis(trimethylsilyl)amide] with benzonitrile yields the bis(benzonitrile) complex, which crystallizes in the triclinic space group P1 with a = 1 173,7(2), b = 1 210,3(2), c = 1 912,4(3) pm, α = 94,37(1), β = 103,39(1), γ = 117,24(1)° and Z = 2. The amido ligands are in equatorial, the benzonitrile molecules in axial positions.     

In Situ Characterization of Polymorphic Forms: The Potential of Raman Techniques

The use of hot-stage Raman microscopy — the direct coupling of Raman spectroscopy and thermomicroscopy — is demonstrated for the drug substances paracetamol and lufenuron.Paracetamol is a well-known analgesic and antipyretic drug, for which three polymorphic forms are currently known. Lufenuron is a benzoylphenyl urea derivative that has been classified as a chitin synthesis inhibitor. It is indicated for the use in pets for the prevention and control of flea population and used in crop protection for the control of Lepidoptera, Western Flower thrips and rust mites. It is the first time that the polymorphism of lufenuron is addressed. All known modifications of paracetamol and lufenuron were produced and identified by hot-stage Raman microscopy. A close correlation of thermal and spectroscopic information was achieved by this combination of techniques.For lufenuron a series of new polymorphic forms were found and characterized. Raman spectroscopy allowed to identify the thermodynamic stable form A as the one which is marketed in tablets.This revised version was published online in November 2005 with corrections to the Cover Date.     

Molekül- und Kristallstruktur des Dimeren Magnesium-bis[bis(trimethylsilyl)amids]

Molecular and Crystal Structure of the dimeric Magnesium bis[bis(trimethylsilyl)-amide] The magnesium bis[bis(trimethylsilyl)amide] crystallizes as a dimeric molecule in the space group C2/c with {a = 1821.0(4); b = 1494.4(4); c = 1859.6(6) pm; β = 121.10(2)°; Z = 4 dimers}. The cyclic planar Mg₂N₂ moiety shows endocyclic NMgN angles of 95.8°. The bond lengths within this ring system to the four-coordinate, bridging nitrogen atoms N^b are 215 pm, whereas the distances between the magnesium atom and the terminal, three-coordinate nitrogen atom N^t display values of approximately 198 pm. These different coordination numbers of the nitrogen atoms affect the NSi bond length (N^tSi 171, N^bSi 177 pm).     

新奇二茂铁甲基氮C60衍生物的合成、结构

尽管目前人们对富勒烯[C₆₀]的过渡金属有机物研究较多^[1],但通过氮卡宾方式连接的C₆₀二茂铁衍生物尚未见报道。鉴于对C₆₀反应的浓厚兴趣及二茂铁的广泛应用价值^[2]我们 利用C₆₀的缺电子性^[3]将其与二茂铁甲基氮卡宾进行[1+2]环加成反应,分离并表征了一种具有齿轮式结构的新奇C₆₀二茂铁衍生物(CpFeC₅H₄CH₂N)5C₆₀(l)。     

Selective addition of H2O to fullerene C60 catalyzed by Ti, Zr, and Hf catalysts

Selective addition of H₂O to fullerene C₆₀ catalyzed by Cp₂MCl₂ (M = Ti, Zr, Hf) catalysts to yield 1-hydroxy-1,2-dihydrofullerene has been realized for the first time.     

Preparation of Novel Side-chain Pseudopolyrotaxanes Consisting of Cucurbituril[6] and Polyamine Salts

Pseudorotaxane monomer （VBCB） containing cucurbitutil[6] （CB[6]） and N^1-（4-vinylbenzyl）-1,4-diaminobutane dihydrochloride （VBDADC） is obtained by self-assembly of cucurbituril[6] with VBDADC in water and then polymerized using potassium persulfate （KPS） as initiator to give novel water-soluble side-chain cucurbituril[6]-based pseudopolyrotaxane（PVBCB）. The chemical structures of PVBCB, VBCB and VBDADC are confirmed by ^1H NMR,^13C NMR spectra and elemental analysis. In VBCB, CB[6] is localized aliphatic group of the side chain and the molar ratio of CB[6] to VBDAC is 1：1 .     

Preparation of composite latex particles by engulfment

It can be predicted that, provided the interfacial energies are well chosen for two individual particles, then it is possible to engulf one particle into the other. This has now been achieved experimentally using poly-[butylmethacrylate] particles as the host material and poly-[styrene] particles for engulfment. Initially, anionic poly-[styrene] particles were heterocoagulated onto electrosterically stabilised cationic particles of poly-[butylmethacrylate]. Then on heating the heterocoagulated units above the glass transition temperature of the latter engulfment occurred.     

Laser photolysis of interaction of poly-guanylic acid (5′) with anthraquinone-2-sulfonate

The electron transfer reaction between triplet anthraquinone-2-sulfonate and poly- guanylic acid (5′) in CH3CN-H2O (97:3) has been investigated by 248 nm (KrF) laser flash photolysis. The transient absorption spectra and kinetics obtained from the interaction of triplet anthraquinone-2-sulfonate and poly[G] demonstrate that the primary ionic radical pair, radical cation of poly[G] and radical anion of anthraquinone-2-sulfonate have been detected simultaneously. The free energy changes in the process of the electron transfer were also calculated.