CHINESE JOURNAL OF CHEMISTRY

CHEN,Guang-Ju(陈光巨).…….1CHEN,Guo.Min(陈国明)……。.85CHEN,Li-Tao(陈丽涛)……….10CHEN,Qi(陈齐)……………..73CHEN,Yun.Sheng(陈运生)……54DENG,Cong-Hao(~从豪)…….19 FENG,Da-Cheng(~大诚)…….19 FENG,Shen奸Y11(冯圣玉)…….19 FU,Xiao.Yuan(傅孝愿)……….10 GUO,Zhi-Zheng(郭志筝)……..54 HAN。Yu.Zhen(韩玉真)=..…….54 HE,Jun-Ling(何军林)…….….63 HU,Qing-Mei(胡青眉)………..63 HU.Sheng-Zhi(胡盛志)……….47 HUANG,You,Qing(黄幼青)…..47 JIANG,Qing(蒋青)……………l K…     

诺贝尔化学奖历届获奖者名录

190 1年　范霍夫 (Ｊ .Ｈ .ｖａｎ’ｔＨｏｆｆ ,荷兰 ) ,研究化学动力学和渗透压的规律。190 2年　Ｅ .费歇尔 (Ｅ .Ｆｉｓｃｈｅｒ ,德国 ) ,合成糖和嘌呤衍生物。190 3年　阿累尼乌斯 (Ｓ .Ａｒｒｈｅｎｉｕｓ,瑞典 ) ,提出电离学说。190 4年　拉姆塞 (Ｗ .Ｒａｍｓａｙ ,英国 ) ,发现惰性气体。190 5年　拜耳 (Ａ .ｖｏｎＢａｅｙｅｒ ,德国 ) ,研究有机染料和芳香族化合物。190 6年　莫瓦桑 (Ｈ .Ｍｏｉｓｓａｎ ,法国 ) ,制备单质氟。190 7年　布赫纳 (Ｅ .Ｂｕｃｈｎｅｒ ,德国 ) ,发现非细胞发酵现象。190 8年　卢瑟福 (Ｅ .Ｒｕｔ…     

Study on the Bond Covalency and Bond Susceptibility in NdCr_(1-x)M_xO_3 (M=Mn, Fe, Co)

IntroductionNdCrl-.M.Os(M=Mn,Fe,Co)'-'haveanorthorhombicperovskite-typestrUcture,andareallp-typesendconductors.lnNdCr,-.Mn.O,'andNdCr,-.Fe.O,',theaverage(Cr,Mn)-Oand(Cr,Fe)-Obonddistancesandeffectivemagneticmomentincreasewiththeincreasingdopinglevel,indicatingthatMn3 andFe3 ionsareinhigh-spinstateswith(dE)'(dY)'and(dE)'(dY)'electronconfigurationsrespectively.However,forNdCr,x.Co.O,'atlowtemperatures,theaverage(Cr,Co)-Obonddistancesandeffectivemagneticmomentsdecrease,suggestingtha…     

微波辅助新型含1,2,3-三唑基的α-氨基膦酸酯类化合物的合成及其晶体结构（英文）

在微波辐射、无溶剂、无催化条件下,合成了两个新型含1,2,3-三唑基的α-氨基膦酸酯类化合物,结构经IR、NMR、X-射线晶体衍射进行了确证。O,O'-二异丙基-α-苯氨基-α-(2-苯基-1,2,3-三唑-4-基)-甲基膦酸酯(4a)晶体属三斜系,P-1空间群,晶胞参数为a=0. 94630(5) nm,b=1. 16572(6) nm,c=1. 17733(8) nm,α=109. 902(5)°,β=105. 410(5)°,γ=96. 748(5)°,V=1. 14586(12) nm~3,Z=2,C_(21)H_(27)N_4O_3P,Mr=414. 43,Dc=1. 201g·cm~3,F(000)=440,μ(Cu Kα)=1. 54184 mm~(-1)。O,O'-二异丙基-α-(4-氯苯基)氨基-α-(2-苯基-1,2,3-三唑-4-基)-甲基膦酸酯(4b)晶体属单斜系,P21/n空间群,晶胞参数为a=1. 11854(17) nm,b=2. 22135(3)nm,c=1. 90049(3) nm,β=91. 7350(15)°,V=4. 71995(12) nm~3,Z=8,C_(21)H_(26)ClN_4O_3P,Mr=448. 88,Dc=1. 263g·cm~3,F(000)=1888. 0,μ(Cu Kα)=1. 54184 mm~(-1)。     

蛇床子香豆素的薄层分离-直接进样-质谱鉴定

用丙酮提取,石油醚冷冻结晶,从蛇床子中得到混合香豆素。经薄层分离 ,直接进样和质谱分析 ,鉴定出8种香豆素化合物:Ⅰ.蛇床子素(osthol) ,Ⅱ.佛手内酯(bergapten) ,Ⅲ.欧芹属素乙(imperatorin) ,Ⅳ.花椒毒素(xanthotoxin) ,Ⅴ.异回芹内酯(isopimpinellin) ,Ⅵ.别异英波托林(alloisoimperatorin) ,Ⅶ.6 -甲氧基 -8 -甲基香豆精(6_methoxy_8_methylcoumarin) ,Ⅷ.花椒毒酚(xanthotoxol)。其中Ⅵ、Ⅶ首次于蛇床子中发现。     

1991年我国期刊在“CA千种表”中的名次

根据(Chemical Abstracts Service Source IndexQuarterry No 4.1991)公布,1991年我国有42种期刊入选世界著名美国(Chemical Abstracts)摘引最多的1000种期刊(简称“CA千种表”)。其名称与名次排列如下:1.分析化学(182);2.理化检验(化学)(199);3.高等学校化学学报(238);4.化学学报(297);5.科学通报(315);6.冶金分析(402);7.中国医药工业杂志(405);8.物理学报(417);9.化学通报(434);10.应用化学(451);11.分析试验室(469);12.高分子学报(475);13.金属学报(489);14.药学学报(501);15.物理化学学报(519);16.岩矿测试(574);17.中国药理学报(595);18.有机化学(613);     

CRYSTAL STRUCTURES OF Ln(o-HOC_6H_4CO_2)_3 (H_2O)_2·2H_2O [Ln =Tb,Ho]

<正> Ln(o-HOC6H4CO2)3(H2O)2·2H2O [Ln = Tb, Ho], Mr = 642. 32 (648. 33 )**,monoclinic, space group Cc,a=16. 280(4)(16. 217 (2)) ,b= 14. 889(3) (14. 877(2)),c = 9.867(1)(9. 835(2)) A,β=101.49(1)(101. 46(1))°,Z= 4,V= 2343. 8(7)(2325. 3(6)) A3,Dc=1. 8(1. 85)g·cm-3,μ=31. 6(36. 1)cm-1(MoKa), F(000) = 1272(1280).The final R=0. 031(0. 031),Rw = 0. 029(0. 031). There is no discrete molecules of the compounds in the crystal structures. The compounds are in linear polymeric arrangements, each metal ion is bridged to the next by two bridging carboxyl groups from salicylato ions.     

中国科学院上海有机化学研究所1985年研究生入学考试试题参考答案

有机化学a.铸 0Hb·志。H一、选择题(共10分,每题1分)1。e6。b2。a3。e47。es。d。ds。。b 10。二、(共10分,每小题2分A。写出下列反应产物:b+,丰予 H户劣邺H“·,声卜护6H5 B.写出反应条件: 3 .a.NaH,CICH:CH,COOEt b.(z)LDA(2)CICHZCHZCOOEt 4 .a.050- b.环氧化,再开环 5 .a一(1)BZH‘,_(2)H:0,,oH- b.(1)Hg(OAe):,执压THF,(2)NaBH通 三、(共4分,每题1分)四、(共5分)、’或非对映异构体(3) a.无_b.等同的(1)b.有,R谓.对映体(2)c.有s,s d.等同的(1)一d.无e.有R 门日:七。月﹄呢」男Br胡以燕门︸︸了、叫,叫C‘儿r-HL…     

Preparation and Thermal Decomposition of [Cr (salen) (H_2O)_2] Cl

Chromium(III)isanessentialtraceelement.Inanactiveform.chronlium(III)asacomponentofglucosetolerancefactor(GTF)canimproveinsulinbiologicalactivity.CrsupplementationinhumansandanimalsreducessymptomsofTypeIIdiabetesandhypoglycemia.Forabetterunderstandingofthenatureofbiologicallyactivechromium(ill)complex,manyGTFmodelcomplexeshavebeenstudiedpreviously'.Here,oneGTFmodelcomplexofN,N'-ethylenebis(salicylideneiminato)diaquochromium(ill)chloride,[Cr(salen)(H,O)=]CIwaspreparedandcharacterized.a…     

CRYSTAL STRUCTURES OF Ln(o-ClC_6H_4CO_2)_3(H_2O)[Ln = Tb(Ⅲ) , Nd(Ⅲ)]

<正> Ln(o-ClC6H4CO2)3 (H2O) (Ln = Tb,Nb) ,Mr = 643. 62[628. 89]**, monoclinic,space group P21/n,a=12. 360(2)[12. 373(5)],b=6. 908(0)[7. 021(2)], c = 25. 936(6) [26. 086(9)] A ,β= 101. 30(2) [101. 71 (3)]°,Z= 4,V = 2171. 5(6) [2219(1)] A3,Dc=1. 97[1. 88]g·cm-3,μ= 37. 5[27. 5]em-1 (MoKa) ,F(000) = 1248[1228]. The two compounds are isomorphous,they show infinite chain structure.     

A NOVEL IRON—SULFUR—THIOLATE BASKET CLUSTER：CRYSTAL STRUCTURE OF Fe6S5（μ—SPh）（P—n—Bu3）4（SPh）2

<正> Fe6S5 (u-SPh) (P-n-Bu3)A (SPh )2, Mr = 1632. 21 , triclinic, P1, a = 11.877(3), b=14. 302(3), c= 24. 920(2) A ,a= 94. 84 (2), B = 96. 59 (2), y = 100. 44(2),V= 4111.7(13)A3,Z=2,Dx==1. 32gcm3,MoKa(0. 71069A),u=13.4 cm-1,F(000) = 1726,T=293K,R(Ru) = 0. 077(0. 060) for 6042 observed (I>3o(I)) reflections.     

系统命名法二百年

1787年9月,在巴黎出版了一本书,它已影响了化学两个世纪。这就是盖顿(L.B.Guyton de Morveau)、拉瓦锡(A.L.Lavoisier)、贝托雷(C.L.Berthollet)和福克劳厄(A.F.de Fourcroy)合著的《化学系统命名法》(Methode de nomenclature chimique)。     

城市污水处理厂污泥中卤代甲基磺酸的液相色谱-串联质谱分析方法研究

建立了测定城市污水处理厂污泥样品中5种卤代甲基磺酸的高效液相色谱-串联质谱(HPLC-MS/MS)方法。通过对萃取溶剂、提取方式和萃取次数等条件进行优化,确定最佳萃取条件为:萃取溶剂为甲醇-水(体积比1∶1)混合溶液,摇床振荡提取1 h,萃取1次。在该条件下对一氯甲基磺酸(Cl-MSA)、二氯甲基磺酸(Cl_2-MSA)、三氯甲基磺酸(Cl_3-MSA)、一溴甲基磺酸(Br-MSA)和三氟甲基磺酸(F_3-MSA)的萃取效率分别为(48. 4±2. 8)%、(68. 3±0. 9)%、(81. 0±4. 8)%、(38. 0±1. 1)%和(99. 1±1. 2)%。该方法的线性范围为0. 05~50μg·kg~(-1),相关系数(r)大于0. 991,各化合物的检出限(S/N=3)为0. 003~0. 018μg·kg~(-1),定量下限为0. 010~0. 059μg·kg~(-1);对实际样品的加标回收率为73. 8%~101%,相对标准偏差为2. 3%~12. 5%,可满足污泥样品中痕量卤代甲基磺酸的分析需求。     

Synthesis of 1,2,3,4-Tetrahydro-1-Indolizinones and 3-Methyl-1,2-dihydro-1-Pyrrolizinones

lthasbeenrePortedthat1,2dihydro-1-pyrmIizinone(1)andsomeofitsderivativesshowedsignificantanaIgesicandantiinnammatory.Cti.iti..ll1.Theketonewassynthesizedfrom3(1-pyrmIyI)propanenitriIe(2)byanimprovedHoesCh'sprocedure.lnoedertostudythestruCture-aCtivityreIationshipdeepIy,theanaIogueoftheketone,1,2,3,4-tetrahydro-1-indolizinone(3)andsomeofitsderivativesweredesignedandsynthesized.ComPOund3wnsfirstsynthesizedbyG.R.CIemoet.aI.withHoeSChreaCtionfrom4-(1-pyrrolyI)bUtanenitriIe(4)m.ThenitriI…     

SYNTHESES OF TUNGSTEN COMPLEXES WITH o-MERCAP-TOPHENOL.CRYSTAL STRUCTURE OF (Ph_4P)[WO(OMe)(mp)_2]

<正> Reaction of WCl6, mpH2 o-mercaptophenol) and MeONa in the presence of Ph4PBr gave complexes (Ph4P)[W(mp)3] (1) and (Ph4P) CWO(OMe) (mp)2] (2). Crystal data complex (2), C37H31O4PS2W, Mr = 818. 61, monoclinic, space group P2/a, a=26. 555(3), b=9. 634(1), c=13. 523(7) A. β=94. 68 (2)°, V=3448. 1 A3. A=1. 58 g/cm3, Z = 4. λ(MoKα)=0. 71073 A , μ= 36. 2 cm-1, F(000) = 1624, T=296K, final R(Rw) = 0. 068(0. 070) for 3929 observed reflections. The WO4S2 core is arranged in a distorted octahedral geometry.     

第四届冬季等离子体光谱会议1986年1月3日至10日在夏威夷召开

由“ICP Information Newsletter”刊物主办的两年一度的等离子体光谱会议将在美国夏威夷Kaanapali海滩Maui Surf饭店召开。本届会议是以ICP、DCP和MIP各类等离子体光源为重点,邀集在分析应用、基本理论和仪器方面有丰富经验的各国科学家进行讨论。优秀的论文将在会议上宣读和印发,并在评阅后提交“Spectrochimica Acta”发表。会议将组织下列专题讨论:(1)ICP-MS(R.S.Houk主持);(2)样品引入和传输技术(R.F.Browner,J.E.Meinhard);(3)干扰问题(L.M.Faires)(4)ICP-AFS(N.Omenetto);(5)分析应用(H.Taylor和K.Fuwa);(6)原子化过程(A.T.Zander);(7)等离子体过程控制和仪器(M.Routh和G.Meyer);(8)激发机理和等离子体特性(M.Blades);(9)色谱分     

CRYSTAL STRUCTURE OF [Mo_3S_4 (μ-CH_3COO) [S_2P(OEt)_2]_3 (py)] (CH_3COOCH_2CH_3)

<正> [Mo3S4(μ-CH3COO)[S2P(OEt)2]3(py)]·(CH3COOCH2CH3) , Mr = 1197. 96,monoclinic,P21/n,a=13. 158(2),b=23. 153(5), c=16. 175(3) A,β = 112. 79(1)°,V=4543. 1(7)A3,Z=4, Dc= 1. 751g/cm-3,λ(MoKa) = 0. 71073A ,μ= 13. 799cm-1,F(000) = 2408. Final R=0. 067 for 4000 reflections. The structure consists of the neutral cluster molecule [Mo3S4(μ-OAc) (dtp)3(py)] (dtp = [S2P(OEt)2]) and the solvent ethyl acetate (AcOEt). The three Mo-Mo bond lengths in the title compound are 2. 691(2) ,2. 747(2) ,2. 762(2) A ,whereas the Mo-N bond length in Mo(3) position is 2. 36(2)A. The important bond lengths of these Mo clusters with (py) ring at the loose coordination site are listed for comparison.     

STUDIES OF RARE EARTH METAL COMPLEXES OF AMINO ACIDS AND PEPTIDES. SYNTHESES AND CRYSTAL STRUCTURES OF TRIAQUO TRIS (N-ACETYLGLYCINE) LANTHANIDE Ln(CH_3CONHCH_2COO)_3(H_2O)_3(Ln = Nd~(3+),Eu~(3+) and Er~(3+))

<正> The title complexes were synthesized and their crystal structures were determined. These complexes crystallize in trigonal space group R3 with 3 molecules in a unit cell and are isostructural to each other. Crystallographic data: complex 1, Nd(CH3CONHCH2COO)3(H2O)3, Mr = 546. 6, a= 16. 582(4), c = 5. 982(2)(?), V= 1424. 5(8)(?)3, Dc=1. 91gcm-3, F (000) = 819, μ = 28.06cm-1, R(Rw) = 0. 048(0. 061); complex 2, Eu (CH3CONHCH2COO)3 (H2O)3, Mr = 554.3, a = 16.564(10), c=5.974(3)(?), V = 1418(2)(?)3,Dc= 1. 95gcm-3, R (Rw) = 0. 018 (0. 025), F (000) = 828, μ= 33. 83cm-1; complex 3, Er-(CH3CONHCH2COO)3(H2O)3, Mr = 569. 6, a = 16. 476(7), c=5. 946(6)(?), V = 1398(2) (?)3, D, = 2. 03gcm-3, R (Rw ) = 0. 020 (0. 027) , F (000) = 843, μ= 46. 25cm-1. These complexes adopt mononuclear structure, in which Ln(Ⅲ) ion is coordinated to six oxygen atoms from three ligands and three oxygen atoms from water molecules with the polyhedron of 4,4,4-tricapped triangular prism. The carboxy-lato group of the ligand bonds to Ln     

X-ray Crystal Structure and Molecular Mechanics Calculations of (2,6-iso-dipropyl-phcnylamidc) Dimethyl (tetra-methylecyclopenta- dienyl)Silane Titanium Dichloride

ExperimentalSynthesisofitToI.sg(4mmol.)TiCI,.THFin25mLTHFwasaddedI.sg(4mmol.)dilithium(2,6-propylphenylamide)dimethyl(tetra-methylcyclopentadienyl)silaneandthemixturewasallowedtostirforIhour,then0.639AgCI(4mmol.)wasadded.After4hoursstirring,thesolventwasmovedandtheresiduewasextractedwithdiethylether.Theetherextractwasfilteredandevaporatedtodrynesstogive0.409yellowcrystallinesolid,yield41%.'H-NMR(C,D,)f0.48(6H),l.I2(6H),l.49(6H),l.98(6H).2.18(6H),and3.04(2H).Asuitablesinglecrystalwa…     

镧-甲基蓝光度法测定硫酸卡那霉素及硫酸新霉素

镧(Ⅲ)-甲基蓝(MB)在酸性条件下与硫酸卡那霉素(KANA)及硫酸新霉素(NEO)反应生成蓝色离子缔合物,两者的最大正吸收波长均位于682 nm,表观摩尔吸光系数为1.71×104L.mol-1.cm-1(KANA)和1.21×104L.mol-1.cm-1(NEO);最大负吸收波长位于620 nm(KANA)和616 nm(NEO),表观摩尔吸光系数为9.57×104L.mol-1.cm-1(KANA)和8.68×104L.mol-1.cm-1(NEO);用双波长法测定时,摩尔吸光系数可达1.10×105L.mol-1.cm-1(KANA)和1.00×105L.mol-1.cm-1(NEO)。方法用于市售药物中硫酸卡那霉素及硫酸新霉素含量的测定,结果与标示值相符,回收率在99.8%~100.5%之间。