Study and Application of Polarographic Catalytic Wave of Chlordiazepoxide in the Presence of Persulfate

ＩｎｔｒｏｄｕｃｔｉｏｎＣｈｌｏｒｄｉａｚｅｐｏｘｉｄｅ (7 ｃｈｌｏｒｏ 2 ｍｅｔｈｙｌａｍｉｎｏ 5 ｐｈｅｎｙｌ 3Ｈ 1,4 ｂｅｎｚｏｄｉａｚｅｐｉｎｅ 4 ｏｘｉｄｅ)ｓｈｏｗｉｎｇｐｏｗｅｒｆｕｌａｎ ｔｉａｎｘｉｅｔｙｅｆｆｅｃｔｈａｓｂｅｅｎｗｉｄｅｌｙｕｓｅｄａｓａｐｓｙｃｈｏｔｈｅｒａｐｅｕ ｔｉｃｄｒｕｇ .Ｃｏｎｓｅｑｕｅｎｔｌｙ ,ｔｈｅｎｅｅｄａｒｏｓｅｆｏｒｓｅｎｓｉｔｉｖｅａｎｄｒａｐｉｄｄｅｔｅｒｍｉｎａｔｉｏｎｏｆｃｈｌｏｒｄｉａｚｅｐｏｘｉｄｅｉｎｂｌｏｏｄ ,ｕｒｉｎｅａｎ…     

Dependence of Performance of Organic Light-emitting Devices on Sheet Resistance of Indium-tin-oxide Anodes

IntroductionIndium-tin-oxide(ITO) has been widely used asthe anode material in organic light-emitting devices(OLEDs) because of its high transmittance in the visi-ble region and low electrical resistivity. In the pastyears, many investigations focused on …     

Synthesis of an Analogue of Squalamine： 6β-Hydroxyl-3-aminosterol

6β-Hydroxylsqualamine was synthesized stereoselectively in 13 steps and 19% overall yield from methyl hyodeoxycholanate by using stereospecific epoxidation and asymmetric isopropylation as key steps.     

Asymmetric Synthesis of α-Substituted-γ-butyrolactone Empolying Prolinol Type of Auxiliaries

Eleven (S)-(-)-bishydrocarbyl-(l-alkanoylpyrrolidin-2_yl)_methanol derivatives of three types were synthesized from L-proline.asymmtncally selective alkylation products were obtained oy LDA treatment and alkylation using methyl 2-bromoethyl ether, and three types of chiral α-Substituted-γ-butyrolactones were obtained by hydrolyzing the alkylation products, with %e.e. beijing up to 89 percent.     

Indole Alkaloids from the Roots of Ervatamia hainanensis

Evratamia hainanensis Tsiang, is distributed in the mountain and forest regions of 100-500 metres height in the southern part of China. Its root has been used for the treatment of stomachache, dysentery, rheumatic arthritis, hypertension and virus hepatit…     

The Synthesis and Activity in vitro of a Series of 5-Amino-8-methoxyquinolones

A series of 1-cyclopropyl-5-amino-6-fluoro-8-methoxyquinoline-3-carboxylic acids have been prepared and evaluated for antibacterial activity in vitro.     

Synthesis and Properties of a Novel Photochromic Compound

A new photochromic compound containing pyrazolone-ring was synthesized, and its crystal structure was determined on X-ray singlecrystal diffraction, which belongs to monoclinic crystal system, space group P21/c. The UV spectrum of the compound is studied.     

Non-isothermal Kinetics of the Thermal Decomposition of 3-Nitro-1,2,4-triazol-5-one Magnesium Complex

Introduction3 Nitro 1,2 ,4 triazol 5 one (NTO)metalcomplexeshavemanyspecialstructuresandsomepotentialusesinammunition .1 4 Wepreviouslypreparedanddeterminedthecrystalstructureofitsmagnesiumcomplex ,5andinthispaper ,wediscusseditsthermalbehaviorbyDSCandTG/DTGtechniquesandstudieditsnon isothermalkineticsbythemeansoftheKissingermethod ,theOzawamethod ,thedifferentialmethodandtheintegralmethod .ExperimentalSample[Mg(H2 O) 6 ](NTO) 2 ·2H2 Owaspreparedasfollows :AcalculatedamountofMg(OH…     

The Study of Alcoholysis of 1,2-Thiazetidine-1,1-dioxide with Quantum Chemical Method

The alcoholysis mechanism of 1,2-thiazetidine-1,1-dioxide with methanol, in which the relatively stable product is sulfonate ester, has been investigated by quantum chemical method. Our calculations indicate the reaction for alcoholysis of 1,2-thiazetidine-1,1-dioxide proceeds via two possible mechanisms: concerted and stepwise. In the stepwise mechanism, two possible reaction pathways can be followed while only one possible reaction pathway can be followed in the concerted mechanism.     

Reduction of 1-Deoxy-13-oxotaxanes

Reduction of 1-deoxy-13-oxotaxanes has been studied under different reaction conditions. Some interesting reactions were reported.     

Crystal Structure of Hydrochlorate of 1,1''''-Bis[(4-pyridylamino)carbonyl]ferrocene

1 INTRODUCTION Recently, there is great current interest in the possibility of using organometallic complexes as ligands to construct mixed-metal suprastructures[1], and ferrocenyl compounds containing mono-or poly- pyridyl fragments have also attracted much attention due to their strong coordinate abilities. For example, Grepioni and coworkers have described the design, synthesis and structure characterizations of several complexes [Fe(η5-C5H4-1-C5H4N)2](AgI)22 /(CuII)24 / (ZnII)24…     

Synthesis and Crystal Structure of a Novel Three-dimensional Supramolecular Compound [（AgI3）（4-HBPFA）2（H2O）]

1 INTRODUCTION In recent years, the rational design and synthesisof metal-directed supramolecular frameworks throughintermolecular hydrogen bonds, π-π stacking interac-tion or other weak interactions have received muchattention because of their interesting molecular topo-logies and various potential applications in catalysis,superconductor, magnetism, nonlinear optics, sen-sors and molecular recognition[1～4]. On the otherhand, the attachment of mono- or polypyridyl frag-ments to a ferr…     

Synthesis,crystal structures,and third-order nonlinear optical properties of a series of ferrocenyl organometallics

Three novel ferrocenyl complexes [Zn(4-PFA)(2)(NO(3))(2)](H(2)O) (1), [Hg(2)(OAc)(4)(4-BPFA)(2)](CH(3)OH) (2), and [Cd(2)(OAc)(4)(4-BPFA)(2)] (3) (4-PFA = [(4-pyridylamino)carbonyl]ferrocene, 4-BPFA = 1,1'-bis[(4-pyridylamino)carbonyl]ferrocene) were prepared, and complexes 1 and 2 were structurally characterized by means of X-ray single-crystal diffraction. In complex 1, the zinc(II) atom is coordinated at a distorted tetrahedral environment by two nitrogen atoms from two 4-PFA moieties and two oxygen atoms from two nitrate anions; [Zn(4-PFA)(2)(NO(3))(2)] units are linked by hydrogen bonds N-H.O and O-H.O forming one-dimensional chains. Complex 2 is a tetranuclear macrocycle compound consisting of two 4-BPFA moieties and two Hg atoms; [Hg(2)(OAc)(4)(4-BPFA)(2)] units form 1-D chains by hydrogen bonds N-H.O as complex 1. Some complexes with 1,1'-bisubstituted pyridine-containing ferrocene ligands have been described, but their crystal data are limited. Compound 2 is the first example of a macrocyclic pyridine-containing ferrocenyl complex. The third-order nonlinear optical (NLO) properties of 4-PFA, 4-BPFA, and complexes 1-3 were determined by Z-scan techniques. The results indicate that all the compounds exhibit strong self-focusing effect. The hyperpolarizability gamma values are calculated to be in the range 1.51 x 10(-)(28) to 3.12 x 10(-)(28) esu. The gamma values are nearly twice as large for complexes 1-3 as for their individual ligands, showing that the optical nonlinearity of the complexes is dominated by the ligands.     

Self-assembled hetero-bimetallic coordination cage and cation-clusters with micro(2)-Cl bridging using a flexible two-arm ferrocene amide linker

One flexible, discrete coordination cage [Cu(2)(3-BPFA)(4)(H(2)O)(2)](ClO(4))(4).4CH(3)OH (), and two cation-clusters with micro(2)-Cl bridging [Ni(2)(micro-Cl)(3-BPFA)(4)(H(2)O)(2)](ClO(4))(3) () and [Co(2)(micro-Cl)(3-BPFA)(4)(H(2)O)(2)](ClO(4))(4).4CH(3)OH (), containing the ferrocenyl functionality were prepared via coordination-driven self-assembly and Cl-anion template from Cu(II), Ni(II) and Co(II) salts and a flexible two-arm molecule 1,1-bis[(3-pyridylamino)carbonyl]ferrocene (3-BPFA).     

Synthesis and Crystal Structure of N—tert—butyl—N′—（2，4—dichlorobenzoyl）—N—[1—（4—chlorophenyl）—1,4—dihydro—6—methylpyridazine—4—oxo—3—carbonyl]hydrazine

1 INTRODUCTIONPyridazinone derivatives represent one of the most active classes of compounds possessing a wide spectra of biological activity. They are widely used in pharmaceuticals and agrochemicals[1,2]. Rohm- Haas Company had reported that N-tert-butyl- dibenzoylhydrazine exhibits excellent insecti- cides[3, 4] and t-butyl plays an important role in the insecticide activity [5]. In the previous paper, we had reported that 1-aryl-1,4-dihydro-3- acylhydrazino- carbonyl-4-one-6-methylpy…     

Hydrothermal Synthesis and Crystal Structure of a Novel Polymolybdate with Two Kinds of Organonitrogen Ligands

A novel inorganic-organic compound (C4N2H12)(C2N2H10)2[Mo5P2O23] (1) has been synthesized by the reaction of (NH4)2MoO4, H3PO4, C2N2H8 (ethylenediaminium), C4N2H10·6H2O (piperazine hexahydrate) and water in aqueous solution under mild hydrothermal conditions. Single-crystal X-ray analysis reveals that the title compound is crystallized in the triclinic system, space group P1 with a = 9.258(19), b = 9.382(19), c = 17.681(4), α = 76.28(3), β = 84.48(3), γ = 70.82(3)o, V = 1408.9(6)3, Mr = 1122.04, Z = 2, Dc = 2.645 g/cm3, μ = 2.384 mm-1, F(000) = 1092.0, the final R = 0.0391, wR = 0.1185 and S = 1.006 for 6169 observed reflections with I > 2σ(I). The crystal packing is stabilized by intra- and intermolecular N-H···O hydrogen bonds to form an infinite 3D network.     

Building blocks for coordination polymers: self-assembled cleft-like and planar discrete metallo-macrocyclic complexes

Discrete dinuclear metallo-macrocyclic complexes have been prepared from the flexible amide ligand N-6-[(3-pyridylmethylamino)carbonyl]pyridine-2-carboxylic acid (L1-CH(3)), and its more rigid analogue, N-6-[(3-pyridylamino)carbonyl]pyridine-2-carboxylic acid (L3-CH(3)). With ligands L1-CH(3) and L3-CH(3), discrete dinuclear metallo-macrocyclic complexes with the generic formula [Cu(2)(L1-CH(3))(2)(X)(2)(Y)(2)] (7, X = NO(3); 8, X = Cl, Y = H(2)O; 9, X = ClO(4), Y = CH(3)OH) and [Cu(2)(L3-CH(3))(2)(X)(2)(Y)(2)] (10, X = NO(3), Y = H(2)O; 11, X = ClO(4), Y = CH(3)OH) are obtained. For complexes 7-9, containing the more flexible link L1-CH(3), these complexes are cleft-shaped and hinged at the methylene spacer, which allows the cleft to widen and contract to accommodate different packing modes in the solid-state. In contrast, the rigid link L3-CH(3) gives near planar metallo-macrocyclic structures. These metallo-macrocyclic compounds may be useful building blocks for coordination polymers.     

Synthesis and Structure of Tungsten Carbonyl Compound with 2-Mercapto Pyrimidine [Et_4N] [W (CO)_4(SC_4H_3,N_2) ]

1INTR0DUCTI0NLowva1encemolybdenum/tungstencomp1exeswiththiolatoligandsareusefulforthestudiesonsyntheticandstructuralchemistry.Inrecentyearswehavesynthe-sizedandcharacterizedaseriesofdinuclearMo-SRc0mpoundscontainingaplanarMoSzMocorewithamon0dentatethiolatoligand"-"anda"butterfly"M0S2Mocorewithabidentatethi0latoligand"=."H0wdoesmultidentateliganddo"hasnaturallyattracted0urinterest-2-mercaptoPyrimidine(PymS)wasusedasamultidentateligandtocarry0utsynthesisexperiment.unexpectedly,whichgavea…     

{[(n-C_4H_9)_4N]_2Ag_(4.95)Cu(Ⅰ)_(1.05)I_8}_n聚合物的合成和晶体结构

标题化合物由AgI、CuI和(n-C4H9)4NI在DMF溶剂中直接反应而得。晶体结.构通过单晶X-射线衍射法确定,其晶体属于单斜晶系,空间群P21/c,a=9.4342(4),b=15.7638(7),c=18.877(1)??=100.65(1)?V=2758.9(2)3,化学式C32H72N2Ag4.95Cu1.05I8,Mr=2100.79,Dc=2.529g/cm3,Z=2,(MoK?=6.618cm-1,F(000)=1930。在1.70≤?≤27.46范围内收集到22473个衍射点,独立衍射点6175(Rint=0.0753),其中可观测衍射点4158个(I>2(I))。晶体结构用直接法和差傅立叶合成方法找出初步结构模型,再分别对Ag和Cu的坐标进行修正,最后用全矩阵最小二乘法对266个变量进行精修,最终偏离因子R=0.0476,wR=0.1315。标题化合物的结构由[(M6I8)-]阴离子链和链间的n-Bu4N+阳离子组成。     

Synthesis and Crystallographic Characterization of Complex [(CH_3)_3NCH_2CH_2N(CH_3)_3][HgI_4]·H_2O Containing Novel Cation

1 INTRODUCTION The crystal structures of several tetrahalogeno-mercurates (II) have been reported with a wide va-riety of stereochemical arrangements[1, . These stu- 2]dies have shown that the Hg atom…