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1.
报道了标题化合物〔C14H18Br2OSn〕的合成及晶体结构。该晶体属于单斜晶系,空间点群为P21/c,晶胞参数a=11.711(2),b=9.114(2),c=16.864(3)A,β=102.94(1)°,V=1604.55(0)A3,Mr=480.78,Z=4,Dc=1.99g/cm3,u=65.20cm-1,F(000)=919,R=0.050,Rw=0.050.晶体结构由直接法解出。标题化合物分子中的锡原子被配体的2个碳、2个溴和1个氧原子配位,配位原子呈畸变的三角双锥构型,环已基为椅式构象,五员杂环为信封构象。  相似文献   

2.
标题化合物C23H26O4是由水杨醛与5,5-二甲基-1,3-环己二酮在N,N-二甲基甲酰胺中反应而得.结构通过单晶X-射线行射法确定,其晶体属于单料晶系,空间群P21/c,a=7.056(7),b=20.263(3),c=13.665(2)A,β=93.32(1)°,V=1950.7(4)A3,Mr=366.46,Dc=1.248g/cm3,Z=4,μ(MoKa)=0.84cm-1,F(000)=784。晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最后的偏离因子R=0.068,Rw=0.075。晶体结构分析结果表明,分子中存在一个共轭的烯醇式结构。  相似文献   

3.
孙命  刘小兰 《结构化学》1998,17(6):405-408
合成了标题化合物,并用X-射线衍射法确定了该分子的晶体结构。化合物Δ(λλ),Λ(δδ)-cis-[Co(en)2(NO2)2]2d,l-C4H4O5,Co2C12N12O13H22,Mr=657.94.晶体属单斜晶系,空间群为P21/c,晶胞参数:a=13.969(4),b=6.440(1),c=14.408(4)A,β=94.37(1)°,V=1292.3A3,Z=2,Dc=1.69g/cm3,μ=105.833cm-1,F(000)=668.最终偏离因子R=0.066,Rw=0.085。结构分析表明晶体存在无序现象,其阴离子C4H4O52-有两种排列方式。R-构型和S-构型的几率各为50%,手性识别是通过Δ构型的阳离子与阴离子R-构型C原子上羟基氧形成氢键相互作用;Λ构型的阳离子与阴离子S-构型C原子上羟基氧形成氢键相互作用而实现的。  相似文献   

4.
1,5-苯并硫氮杂与苯乙酰氯反应生成1,5-苯并硫氮杂-α-苯基-β-内酰胺(Ⅱ)。X-射线单晶衍射测定结果表明,该化合物分子式为C29H22CINOS,M=467.5,晶体属单斜晶系,P21/c空间群,a=12.864(3),b=9.511(2),c=19.489(4)A,β=92.41(3)°,V=2382(1)A3,Dc=1.305g/cm3,Z=4,F(000)=976,μ=0.2636mm-1,R=0.068,Rw=0.068。该反应具有立体专一性,四员环上的2个苯基位于同一侧为顺式。产物分子中的七员环为类椅式构象。  相似文献   

5.
合成并测定了N-苯基-3-(p-氯苯)全氢螺[苯并[b]异唑7,1-环已烷]-4-酮(3)的单晶结构,晶体分子式C24H26ClNO2,Mr=395.93,晶体属单科晶系,空间群为P21/c,晶胞参数结构的偏离因子R=0.037,Rw=0.039。分子3存在着两个螺六员环(A和B),A环具有通常的椅式构型,B环是扭船式构型。B环和五员异呼吐环C环并连,C环有些扭曲,结构分析结果表明,分子3具有“顺-顺”构型。  相似文献   

6.
标题两个化合物是在反应体系(NH4)3VS4/CuX/PPh3/NEt4X(X=Br,Ⅰ)中采用低温固相反应方法得到的,单晶X射线结构分析表明:VS4(CuPPh3)5Br2(Ⅰ)和VS4-(CuPPh3)5I2(Ⅱ)是同构的,其中晶体(Ⅰ)属于单斜晶系,空间群P211/c,Mr=19682,a=20.215(7),b=15.691(4),c=27.345(9)A,β=95.29(3)°,V=8637.0A3,Z=4,Dc=1.51g/cm3,F(000)=3968,μ(MoKa)=24.6cm-1,R=0.078。晶体(Ⅱ)亦属于单斜晶系,Mr=2062.2,空间群P21/c,a=20.1613(2),b=15.9718(2),c=27.7427(3)A,β=96.07(1)°,V=8883.4A3,Z=4,Dc=1.54g/cm3,F(000)=4112,μ(MoKa)=22.0cm-1,R=0.068。簇合物(Ⅰ)和(Ⅱ)的簇芯结构可描述为共面的2个开口的扭曲立方烷,在这两个簇合物中,V原子仍保持反应起始物[VS4]3-中的四面体配位,5个CU原子呈近似的四方锥排列,V原子基本上处于Cu5四方锥底面的中心。其中1个Cu原子为平面三角形配位,另外4个Cu原子为严重畸变的四面体配位。  相似文献   

7.
标题化合物C24H30O5是由邻甲氧基苯甲醛与5,5-二甲基-1,3-环己二酮在N,N-二甲基甲酰胺中反应而得。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C2/c,a=33.942(6),b=7273(1),c=22667(4)A,β=128.989(9)°,Mr=398.50,V=4349(1)A3,Dc=1.2179·cm-3,Z=8,μ(MoKa)=840mm-1,F(000)=1712。晶体结构用直接法解出,经用全矩阵最小二乘法对原子参数进行修正,最后的偏离因子为R=0.043,Rw=0.052。在晶体结构中,存在一个分子间氢键。  相似文献   

8.
(C5H4CH3)3Ho和(C5H4CH3)2Ho(C5H5)与5-苯基四唑(HN4CPh)在THF中反应,得到复合产物[(C5H4CH3)2HoN4CPh]2·[(C5H4CH3)(C5H5)HoN4CPh]2,该晶体属三斜晶系,P1空间群,晶胞参数为a=9.386(3),b=13.071(3),c=16.571(2)A,a=86.90(1),β=74.61(2),γ=77.30(2)°,V=1912.2(8)A3,Z=1,Dc=1.602g/cm3,Mr=922.61,μ=41.92cm-1,F(000)=896,最终偏离因子R=0.041,Rw=0.056.晶体数据显示,在同一个晶胞里有两个组成不同的分子,每一个分子都是具有对称中心的四唑基桥二聚体结构,其桥环单元-HoN3HoN3-是平面型的。每个钬原子分别被两个茂基和3个四唑基氮原子配位,形成1个边桥变形四面体构型。  相似文献   

9.
苯基异氰酸酯与3,6-二甲基-1,6-二氢-S-四嗪反应生成标题化合物(C18H18N6O2,Mr=350.38)。经X-射线单晶结构分析表明此晶体属于单斜晶系,P21/c空间群,a=9.348(2),b=6.860(6),c=27.929(7) A,β=94.57(2)°,V=1785.3A3,Z=4,μ=0.090mm-1,Dc=1.304g/cm3,F(000)=736。结果表明该化合物的2个酰胺基接在S-四嗪环的1,4位,而四嗪环本身呈船式构象,不具有同芳香性,分子间存在氢键相互作用。  相似文献   

10.
通过2-甲基-4-对甲苯基-1-苯甲酰基-2,3-二氢-1H-1,5-苯并二氮杂与由不对称1-苯基-2-偶氮-1,3-丁二酮热解产生的a-羰基烯酮的[2+4]环加成反应制备了标题化合物(C34H30N2O3,Mr=514.62),用X射线衍射测定了其单晶结构。晶体属单斜晶系,空间群为P21/n,a=11.560(1),b=19.058(3),c=13.207(2)A,β=106.82(1)°,V=2785.2(7)A3,Z=4,Dc=1.230g.cm-3,MoKa(λ=0.71073A),μ=0.064mm-1,F(000)=1088,2278个可观测衍子射点,R=0.046,Rw=0.049。分子骨架为由苯环、具有类扭船式构象的七元二氮杂环和略微扭曲的唑酮环构成的三环体系。  相似文献   

11.
1INTRODUCTION Over the past decades,olefin oligomerization and polymerization based on late transition metal catalysts have been the most exciting developments in the area of organometallic chemistry and polymer science[1~3].In this broad context,neutral nickel(II)complexes have attracted much attention for their less sensitivity to protonic solvents and polar mon-mers.The most typical one is the SHOP-type cata-lyst[4~6],which contains an anionic[P,O]chelate ring and shows high activ…  相似文献   

12.
1 INTRODUCTION The 10-benzylidene anthrones which are important intermediate for organic syntheses[1~3] usually possess thermochromism[4] and photo- chromism[5], and have been found recently to have evident anti-cancer activity[6]. We found that the substituents in the phenyl ring will affect the bioactivity of those compounds. For more deeply investigating the structure-activity relationships (SAR) and understanding interactions between the three dimensional structure of the compound …  相似文献   

13.
1INTRODUCTIONThetitlecompound,C,,H,,O,(mp:146~148'C),forthefirsttime,wasiso-latedfromClinopodiumpolycephalum(Vant-)byC.Y.WuetHsuancalled"DuanXueliu"inChinesethatisusedinfolkmedicineforthetreatmentofhaemorrhagiadisease[1i.Itsstructurehasalreadybeendeterminedt2ibymeansofUV,lR,NMRandchemicalsynthesis.Sinceloliolideappearedtohaveantitumoractivity"'andim-munosuppressiveactivity'#'inrecentyears,weaffirmedthestructurebyX-raydiffractionanalysis.2EXPERIMENTALApaleyellowtransparentcry…  相似文献   

14.
The crystal structure of the title compound (C19H15F3N2O2, Mr= 360.33) was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P(1), with a = 6.5604(7), b = 13.9614(16), c = 18.1790(18) (A), α = 102.749(7),β = 97.542(6), γ = 94.355(4)°, V= 1600.5(3) (A)3, Z = 4, Dc = 1.495 g/cm3, λ(MoKα) = 0.71070, F(000) = 744, μ(MoKα) = 0.122mm-1, R = 0.0434 and wR = 0.1051. A total of 7590 unique reflections were collected, of which 5429 with |F|2 ≥ 2σ|F|2 were observed. The two cyclohexene rings in the molecule adopt boat-boat conformations with the deviations of ring atoms C(9) and C10 from the C(5)/C(6)/C(7)/C(8) plane (Ⅰ) by 1.1204 (0.0023) and 1.1132 (0.0023) (A), respectively, whereas from the C(2)/C(3)/C(5)/C(8)plane (Ⅱ) by 1.1627 (0.0022) and 1.1818 (0.0021) (A), respectively. In the cyclopropane and lactam rings, atoms C(11) and N(1) point towards the double bond of C(9)-C(10) and the dihedral angle between the ring plane (Ⅲ) containing C(1), C(2), C(3) and C(4) and plane (Ⅳ) consisting of C(6),C(7) and C(11) is 55.76 (0.07)°. The dihedral angles between planes Ⅳ and Ⅰ and Ⅱ and Ⅲ are 63.58 (0.07)° and 58.10 (0.06)°, respectively. The dihedral angle between the benzene ring C(13)~C(18) and plane Ⅳ is 42.41 (0.06)°.  相似文献   

15.
1INTR0DUCTI0NBenzoheteroazepinecompoundsareimportantpharmaceuticalagents"-".Inre-centyears,ithasbeenfoundthatbenzoheter0azepinetricyclicderivatives,especiallythosefusedwithotherfiveorsix-memberedheterocycle,area1soofpotentialphar-maceuticalinterestst4-6j.Hence,muchattentionhasbeenpaidtothesynthesesofthem,suchasl,3-oxazino[3,2-djt1,5jbenzothia/diazepin-l-onet"'J,1,2,4-tria-zolo[4,3-dj[1,5jbenzothia/diazepine"',1,2,4-oxadiazolo[4,5-dj[l,5jbenzothia/diazepine',',andsoon.Meanwhiletheirstructur…  相似文献   

16.
1 INTRODUCTION Phosphorus-containing vinyl compounds havebeen widely studied due to their versatile physiolo-gical activities and applications in transition metalchemistry, asymmetric catalysis and photorearrange-ment[1~4]. In our previous papers, we have reportedthe syntheses of 2,2,4,5-tetrasubstituted-1,3-dithio-les[5] and 2,5-bis(morpholino)-3,4-bis-(p-chloro-phe-nyl)thiophenes[6] by the reactions of α-thioaroyl-thiofor-mamide with trimethyl phosphite at room tempera-ture and in refl…  相似文献   

17.
席海涛  王爱健  孙小强  张秀芹  陈强 《结构化学》2009,28(10):1210-1216
A novel molecule tetra-N-alkylation of cyclen (1,4,7,10-tetraazacyclododecane), 1,4,7,10-tetrakis(2-((4-hydroxy)phenoxy)ethyl)-1,4,7,10-tetraazacyclododecane 2, was synthesized and structurally characterized by single-crystal X-ray diffraction. The molecule turned into chiral helical compound crystals grown from EtOH by slow diffusion at room temperature and three of the four hydroquinone groups of the benzene ring formed a g-electron-rich cavity by C-H…π stacking interaction. The crystal belongs to the monoclinic system, space group P21/C with a = 13.9192(9), b = 13.2871(6), c = 22.1894(15)A^°, β = 91.4600(10)°, V = 4102.5(4)A^°3, Z = 4, Dc = 1.219 g/cm^3, C40H52N4O8, Mr = 752.89, F(000) = 1616,μ = 0.088 mm^-1, MoKa radiation (λ = 0.71073), R = 0.0578 and wR = 0.1389 for 5588 observed reflections with I 〉 2σ(I). Moreover, compound 2 was characterized with ^1H NMR, ^13C NMR, IR spectra and MS.  相似文献   

18.
<正> The title compound C20H20N2O4(Mr=352.39)belongs to mono-clinic space group C2/c with a=9.208(4),b=11.714(3),c=32.336(8)A,β=100.83(2)°,V=7146.2(6)A3,Z=16,Dc=1.35 g/cm3,μ(Moka)=1.03 cm-1 and final R=0.06 for 1781 reflections with F≥2.5(F).There are two independent molecules in an asymmetric unit.Neither pyridinone nor phenyl ring is coplanar with the ketonic carbonyl group in the molecule.  相似文献   

19.
1 INTRODUCTION Over the past decades, extensive work has been carried out to study palladium complexes in organic synthesis, structural analysis, chemical reactivity, catalytic process, spectroscopy and functional mate- rials[1]. Especially the anti…  相似文献   

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