Synthesis and Crystal Structure of Carvedilol

1INTRODUCTI0NCarvedilol,1-(4-carbazolyloxy)-3-[2-methoxyphenoxy)ethylaminoj-2-propanol,isanewgblockingandvasodilatingagent"'.IthadsynthesizedbyF.Wiedemannetalt23.Howeverthereportaboutcrystalstructureofcarvedilolhasnotbeenseen.Inthispaper,wediscussthecrystalstructureofthecarvedilolsynthe-sized[2ibythereacti0nof4-(2,3-ex0xypropoxy)-carbazoleand2-(2-methoxyphe-noxy)ethylamine.Sinceknowledgeofthemolecularandcrystalstructureofcarvedil0lwasconsideredusefulforunderstandingthemechanismoftheactio…     

三苄基锡吗啉二硫代氨基甲酸盐的合成、表征及晶体结构

利用三苄基氯化锡和吗啉二硫代氨基甲酸钠反应,合成了三苄基锡吗啉二硫代氨基甲酸盐。通过元素分析、红外光谱、核磁共振氢谱和质谱对其结构进行了表征。用X-射线单晶衍射测定了该化合物的晶体结构。化合物为三斜晶系,空间群P1,a=0.98417(16)nm,b=1.08163(19)nm,c=1.3788(2)nm,α=72.850(3)°,β=88.895(3)°,γ=64.231(3)°,Z=2,V=1.2528(4)nm³,D_x=1.469g·cm^-3,μ(MoKα)=1.204mm^-1,F(000)=564,R₁=0.0215,wR₂=0.0531。化合物中,锡原子呈五配位畸变三角双锥构型。     

双缩二氨基硫脲类化合物的合成与结构

合成了1，5-二（4-甲氧基苯甲醛）双缩二氨基硫脲（1），1，5-二（对二甲 基氨基苯甲醛）双缩二氨基硫脲（2），1，5-二（2-呋喃甲醛）双缩二氨基硫脲（ 3）三个化合物，并通过元素分析、红外光谱、核磁共振、质谱进行了结构表征。 首次报道了双缩二氨基硫脲类化合物的^13C NMR数据，并发现在溶液中由于构象异 构体或二聚体的存在，该类化合物的部分^13C NMR谱峰出现矮而宽、不易检测的特 征。配体1形成的晶体为单斜晶系，具有P21/c空间群，a=1.4363(3)nm，b=1.2622 (2)nm，c=1.0970(2)nm，β=101.730（10）°，V=1.9472（6）nm^3，Z=4，Dc=1. 318g/cm^3，μ=0.193mm^-1，F(000)=816，R1=0.0560，ωR2=0.1496。由于分子间 弱氢键力的作用，在晶体中以二聚体的形式存在。     

取代萘并吡喃的合成和晶体结构研究

以芳醛、丙二腈（或氰乙酸酯）、β－萘酚为原料在六氢吡啶存在下以乙醇为 溶剂一锅合成了取代萘并吡喃，产物的结构通过单晶X射线衍射分析确定。     

Synthesis and Crystal Structure of NaeTiO3

The crystal structure of a sodium titanium oxide Na2TiO3 obtained by high temperature solid state reaction method was determined from single-crystal X-ray diffraction study. The compound crystallizes in the monoclinic system, space group C2/c, Mr = 141.88, a = 9.885（1）, b = 6.4133（8）, c = 5.5048（7） A, β = 115.50（3）°, V = 314.99（7） A^3, Z = 4, Dc = 2.992 g/cm^3, 2 = 0.71073A,μ = 27.80 cm^-1, F（000） = 272, T= 295 K, R = 0.0189 and wR = 0.0512 for 30 variables and 370 contributing unique reflections. The three-dimensional structure in Na2TiO3 is constructed by the TiO（1）4O（2） and NAO（1）3O（2）2 groups. The titanium atoms are grouped in the form of trigonal bipyramid and arranged along the c axis by sharing the edges. The structure is compared with other structures of related A2BO3 compounds.     

Synthesis and Crystal Structure of 6—Bromo—piperonal—dimethyl—acetal

1 INTRODUCTION 6-Bromo-piperonal-dimethyl-acetal is an intermediate used for the synthesis of natural products, such as podophyllotoxin[1] and the related compounds[2～6] due to the useful biological activities associated with some of its derivatives[7, 8]. In particular, glycoside derivatives of 4?dimethyl- 4-epipodophyllotoxin have been used in cancer chemotherapy[9, 10]. The title compound has been synthesized from raw material piperonal, after bromo substitution and acetal protection…     

新型镍配合物的溶剂热合成及其晶体结构

以2-乙氧基-6-亚氨甲基苯酚(HL)为配体,与氨水和Ni(ClO4)2.6H2O经溶剂热法合成了新型镍配合物[Ni(L)2](1),其结构经IR,元素分析和XRD表征。1属三斜晶系,Pī空间群,晶胞参数a=0.843 3(3)nm,b=1.009 4(2)nm,c=1.188 4(2)nm,α=111.16(3)°,β=97.43(3)°,γ=102.43(3)°,V=0.897 2(11)nm3,Mr=387.05,Z=2,Dc=1 433 g.cm-3,F(000)=404,μ=1.105 mm-1,S=1.015。1中Ni2-分别与两个L-上的两个N原子和两个O原子配位,形成了平面四边形几何构型。分子通过一对N-H┈O氢键形成二聚体;二聚体进一步通过N-H┈O氢键和C-H┈Ni氢键的相互作用形成二维网状结构。     

新型含氟α-氨基膦酸酯的合成和晶体结构

利用含氟苯基亚胺与亚磷酸酯反应,合成了新型含氟α-氨基膦酸酯,通过元素分析、红外光谱、质谱、核磁共振氢谱对其结构进行了表征.X射线单晶衍射测试结果表明:化合物为三斜晶系,空间群P1,a=1.0178(6)nm,b=1.0354(6)nm,c=2.2534(13)nm,α=77.413(10)°,β=78.340(10)°,y=77.540(10)°,V=2.233(2)nm3,Z=4,Dc=1.289 Mg·m-3,μ=O.175 mm-1,F(000)=904.0,最终偏离因子R=0.0728,wR=0.1724.     

一苄基锡三（2－吡啶甲酸酯）的合成和晶体结构

利用三苄基氯化锡和2－吡啶甲酸在三乙胺存在下以1：摩尔比反应，合成了非 预期的去苄基化产物一苄基锡三（2－吡啶甲酸酯）。通过元素分析、红外光谱、 核磁共振氢谱和X射线单晶衍射对其结构进行了表征。测试结果表明：该化合物为 单斜晶系，空间群P21，a=1.3141(2)nm,b=1.13127(17)nm,c=1.7122(3)nm,β-110. 581(2°），Z=4,V=2.3829(6)nm^3,Dc=1.606g/cm^3,μ=1.118mm^-1,F(000)=1152, R1=0.0397,wR2=0.0881。该化合物为单体结构，锡原子呈七配位畸变五角双锥构型 。     

6-氟-2,4-二苯基喹啉的合成与晶体结构

合成了一种新的喹啉衍生物6-氟-2,4-二苯基喹啉(FDPQ),并且测定了该化合物的晶体结构.该晶体属于单斜晶系,P2(1)/c空间群.     

Synthesis and Crystal Structure of Dehydroandrographolide Dipolycyclophosphate

1 INTRODUCTION Andrographolide 1 is the major labdane diter- penoidal constituent of Andrographis panicutate (Burm) Nees used extensively in the traditional Chinese and Indian medicine, and reported to exhibit a wide spectrum of biological activities such as anti- inflammatory[1～3], anti-allergic[4, 5], anti-platelet aggregation[6], hepatoprotective[7, 8] and anti-human immunodeficiency virus (HIV) activities[9, 10]. Addi- tionally due to the wide applications in clinic for the treat…     

二维网状铜(Ⅱ)配合物的合成及晶体结构表征

A Cu(Ⅱ) complex [Cu(L)_1.5(OSO₃)]·3H₂O (1) [L=1,4-bis(imidazol-1-yl)benzene] was synthesized by reaction of ligand L with CuSO₄·5H₂O using solvothermal method and its structure was determined by X-ray crystal structure analysis. The structure indicates that the complex crystallizes in triclinic, space group P1 with a=0.948 8(2), b=1.078 5(2), c=1.108 4(2) nm, α=74.820(2), β=81.331(2), γ=72.638(2)°, V=1.041 5(3) nm³, Z=2, D_calc=1.687 g·cm^-3, F(000)=544, μ=1.205 cm^-1, the final R=0.062 3 and wR=0.132 8. The Cu(Ⅱ) atom has distorted square-pyramidal environment with a N₃O₂ donor set. Each L ligand links two Cu(Ⅱ) atoms using its imidazole groups to form an infinite one-dimensional (1D) ladder-like chain, which further linked by SO₄^2- to form a two-dimensional (2D) network structure. The 2D sheets are further connected by C-H…O hydrogen bonds to give a three-dimensional (3D) structure. CCDC: 650388.     

3,3''''-二溴氧化偶氮苯的绿色合成及晶体结构

在β-环糊精、氢氧化钠的水介质中,由间溴硝基苯直接合成3,3'-二溴氧化偶氮苯(1),其结构经1H NMR表征.采用X-射线单晶衍射仪测定了1的晶体结构,属单斜晶系,P2(1)空间群,晶胞参数为:a=0.79596(11)nm,b=0.58620(8)nm,c=2.5968(4)nm,α=90°,β=95.781(2)°,γ=90°,V=1.2055(3)nm3,Z=4,F(000)=688,Mr=356.02,Dc=1.962 g·cm-3,μ=6.708 mm-1,R1=0.0311,wR2=0.0766.     

Synthesis and Crystal Structure of N-Ferrocenesulfonyl Hexahydropyridine

1 1 INTRODUCTION Sulfonamides exhibit higher pharmaceutical and pesticidal characteristics such as fungicidal, antitu- mor and herbicidal activities[1~6]. On the other hand, many ferrocene derivatives have excellent biological or physiological activities, which are used in biology and medicine owing to their lipophilicity, aroma- ticity, biological oxidisability and lower toxicity[7, 8]. In search for effective fungicide, we introduce ferro- cenyl into sulfonamide molecule to synthesize a …     

四氟邻苯二甲腈的合成及其晶体结构

四氟邻苯二甲腈是合成氟代酞菁类有机光电子材料及含氟药物的重要中间体。以四氟邻苯二甲酸酐为起始原料,经亚胺化、氨化及脱水3步反应,合成了四氟邻苯二甲腈,总收率41.67%,其结构经FT-IR, MS(ESI)和X-射线单晶衍射确证。     

Synthesis and Crystal Structure of Trichlorotetrakis(tetrahydrofuran) Europium

1INTRODUCTIONTheinvestigationofthestructureoforganolanthanidecompoundshasbeenofin-terestformanyyearsbeacuseitisimportanttointerpretthebondingandchemicalpropertiesoflanthanidecompounds.Toextendourknowledgeofmonoindenyldichlorolanthanides,thecompoundswithgeneralformula(C,H,)LnCI,(Ln~Eu,Ho)weresynthesizedandtheirstructuresweredetermined.Inanattempttoprepare(C,H:)EuCI,,afinecrystalEuCI,(OC.H,).wasobtainedasanunexpectedresult.Itwasfirstfoundthattitlecompoundcancrystallizeindifferentcrys…     

Synthesis and Crystal Structure of Na2TiO3

The crystal structure of a sodium titanium oxide Na2TiO3 obtained by high temperature solid state reaction method was determined from single-crystal X-ray diffraction study. The compound crystallizes in the monoclinic system, space group C2/c, Mr = 141.88, a = 9.885(1), b = 6.4133(8), c = 5.5048(7) , β = 115.50(3)o, V = 314.99(7) 3, Z = 4, Dc = 2.992 g/cm3, λ = 0.71073 , μ = 27.80 cm–1, F(000) = 272, T = 295 K, R = 0.0189 and wR = 0.0512 for 30 variables and 370 contributing unique reflections. The three-dimensional structure in Na2TiO3 is constructed by the TiO(1)4O(2) and NaO(1)3O(2)2 groups. The titanium atoms are grouped in the form of trigonal bipyramid and arranged along the c axis by sharing the edges. The structure is compared with other structures of related A2BO3 compounds.     

Synthesis and Crystal Structure of o-Methylisourea Hydrosulfate

l INTRODUCTION As an important and capital intermediate of chemi- cal engineering, medicine and pesticide, o-methyli- sourea today is mainly used to synthesize fluoracil antitumor drugs, pesticides and polyantibacterials. According to the applications and syntheses, o- methylisourea is usually prepared as its salts and es- ters, such as o-methylisourea hydrosulfate, o-me- thylisourea sulfate, o-methylisourea acetate, o-methy- lisourea formate, and so on, since o-methylisourea is unstable.…     

Synthesis and Crystal Structure of Bi（2-nitrilethyl）aminoacetonitrile

1INTRODUCTIONTheresearchonorganicpolyaminesiscur-rentlyofgreatinterestbecauseoftheirpotentialapplicationsasusefulorganicligands,inwhichtheaminenitrogenatomshavestrongcoordinationabilitytothetransitionmetalions.Theirtransitionmetalcomplexesplayanexcellentr…     

含八齿苦味酸根的超分子苦味酸钾的合成和结构

A supramolecular complex， [Kpic]_n (pic^- is picratol， (NO₂)₃C₆H₂O^-)， has been synthesized unexpectedly in acetone solution， and characterized by elemental analysis， IR and X-ray crystallography. In the complex， the K⁺∶pic^- is 1∶1， and one K(Ⅰ) ion is surrounded by six picrate anions， one picrate anion can coordinate to six K(Ⅰ) ions. The coordination number of every potassium atom is eight. Interestingly， the picratol adopts an eight-coordinated ideal mode unreported. CCDC: 630627.