Synthesis and Crystal Structure of Gd3（BSiO6）（SiO4）

1INTRODUCTIONRareearthborosilicateshaverarelybeenreportedinthepastdecade.LnBMO5(M=Ge,Si)(l,z,31exhibitsthestillwellitestructureonlyforlargerlanthanide,initsstructure,twoBO'tetrahedraandoneSiO'tetrahedronareconnectedbycorner-sharedeachothertoformsix-memberringthatconstructinfinitehelicalchainsparal-lelto3lscrewaxis-Serhanetal(43synthesizedNd,BM2O,,(M=Si Ge)whosestructurecontainstri-coordinatedboronatoms.Recently,wehavesynthesizedSm3BSi2O1,andEu,BSi,O,,t"6),herewerffportthesynthes…     

Synthesis and Crystal Structure of （SiCl3）2Fe（CO）4

The compound （SiCl3）2Fe（CO）4 was synthesized and structurally characterized by X-ray single-crystal diffraction. It crystallizes in monoclinic, space group P2 1/n with α = 8.287（2）, b = 9.829（2）, c = 9.042（2） A, β = 96.19（3）°, V= 732.2（3） A^3, C4Cl6FeO4Si2, Mr = 436.77, Z = 2, Dc = 1.981 g/cm^3, F（000） = 424, μ（MoKα） = 2.282 mm^-1, the final R = 0.048 and wR = 0.164 for 1109 observed reflections （I 〉 2σ（I））. The crystal structure of （SiCl3）2Fe（CO）4 reveals that the Si（l）- Fe-Si（l）^a sequence is linear and perpendicular to the Fe（CO）4 cross-shaped plane.     

Synthesis, Crystal Structure and Properties of 2,7-Bis [4-（diphenylamino）phenyl] fluorene

A novel fluorene derivative containing triphenylamine groups, 2,7-bis[4-(diphenylamino)-phenyl]fluorene (C49H36N2 , Mr= 652.80), was synthesized via Suzuki coupling reaction (yield: 19%) and its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.320(4), b = 11.250(6), c = 17.369(6) , α = 88.035(3), β = 86.450(5), γ = 73.524(5)°, V = 1742.8(13) 3 , Z = 2, Dc = 1.244 g/cm 3 , μ(MoKα) = 0.072 mm -1 , F(000) = 688, S = 1.095, the final R = 0.0616 and wR = 0.1878. It presents a linear framework constituted by a linkage of fluorene as a bridge and two triphenylamine groups. Its spectral and electrochemical properties were studied by UV-Vis absorption, fluorescence spectroscopy and cyclic voltammetry (CV). This compound can emit intense blue fluorescence with a peak wavelength of 446 nm and a full width at half maximum (FWHM) of 38 nm under UV excitation at 350 nm in film. The highest occupied molecular orbital (HOMO) energy level, the lowest unoccupied molecular orbital (LUMO) energy level and optical band gap (Eg) of the title compound are -5.46, -2.57 and 2.89 eV, respectively.     

Synthesis and Crystal Structure of 3-（2,4-Dichlorophenyl）- 4-dydroxy-5-cyclohexanyl-△3-dihydrofuran-2-one

The title compound 3-（2,4-dichlorophenyl）-4-dydroxy-3-（2,4-dichlorophenyl）-4- dydroxy-5-cyclohexanyl-A3-dihydrofuran-2-one 5 has been synthesized by the cyclization of methyl O-（2,4-dichlorophenyl-acetyl）-1-hydroxycyclo-hexane-carboxylate 4, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group Pi with a = 6.8192（3）, b = 10.5053（5）, c = 10.5811（5）A,α = 71.681（10）, β = 78.905（12）, γ = 81.036（12）°, C15H14C1203, Mr = 313.18, V= 702.44（6）A3, Z = 2, De= 1.481 g/cm^3, F（000） = 324,μ = 0.465 mm^-1, S = 1.006, the final R = 0.0331 and wR = 0.1363 for 2505 observed reflections with I 〉 2σ（I） and 183 variable parameters. The crystal analysis shows that the cyclohexene unit of the title compound has a quasi-chair conformation, and a one-dimensional chain structure is formed via the intermolecular hydrogen bond O（1）-H（101）…O（2）.     

Synthesis,Crystal Structure and Herbicidal Activity of N-（4-Methylbenzyl）-4-（3-fluorophenyl）-4-piperidinol Hydrochloride

A novel compound N-（4-methylbenzyl）-4-（3-fluorophenyl）-4-piperidinol hydrochloride has been synthesized and its structure （C19H23ClFNO, Mr = 335.83） was characterized by elemental analysis, IR, ^1H NMR, MS and single-crystal X-ray diffraction analyses. The crystal belongs to the triclinic system, space group P1 with a = 7.2163（6）, b = 10.7905（9）, c = 12.2651（10） A, α = 109.576（2）,β = 98.407（2）,γ= 95.956（2）°, V= 878.14（13）A3, Z = 2, Dc = 1.270 g/cm^3,μ = 0.231 mm^-1, F（000） = 356, S = 1.100, the final R = 0.0525 and wR = 0.1425 for 3206 unique reflections （Rint = 0.0140） with 2736 observed ones （I 〉 2σ（I））. The piperidine ring exhibits a chair conformation. The dihedral angle made by the methyl- and fluoro-substituted benzene rings is 66.84（7）°. There are some intra- and intermolecular hydrogen bonding interactions among the molecules, which stabilize the whole crystal structure. The preliminary biological activity tests indicate good herbicidal activity for the title compound, in particular against the roots of some tested plants （such as Brassica campestris L. and Echinochloa crusgallis L.）.     

Synthesis and Crystal Structure of 2-[（2-Chloropyridin-4-yl）oxy]-3,3-diphenyl-3-methoxypropionic Acid

The title compound was synthesized and its crystal structure was determined by single-crystal X-ray diffraction.The crystal is of orthorhombic system(C21H18ClNO4,Mr = 383.81),space group Pca21 with a = 13.913(3),b = 10.273(2),c = 26.488(5),V = 3786.1(13) 3,Z = 8,Dc = 1.347 g/cm3,F(000) = 1600,μ = 0.228 mm-1,the final R = 0.0550 and wR = 0.1278 for 5065 observed reflections(I > 2σ(I)).The title compound in a racemic form was found to exist as a mixture of two enantiomers in an equal ratio in the unit cell.The intermolecular hydrogen bonds link the molecules in a head-to-end manner to generate an infinite chain.     

Synthesis and Crystal Structure of [2-Hydroxy- 5-（4-hydroxy-3-phenyliminomethylbenzyl）-benzylidene]-phenyl-amine

The title compound [2-hydroxy-5-（4-hydroxy-3-phenyliminomethyl-benzyl）-benzylidene]-phenyl-amine （C27H22N2O2, Mr = 406.47） was synthesized by 5,5′-methylene-bissalicylal- dehyde with aminobenezene, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a = 4.4026（6）, b = 1.501（13）, c = 0.95818（12） nm, β = 90.868（2）°, V= 4.2813（9） nm^3, Z= 8, Dc= 1.292 g/cm^3,μ = 0.010, F（000） = 1744, R = 0.0576 and wR = 0.1450 for 3766 observed reflections with I 〉 2σ（I）. X-ray analysis reveals that the molecule has a pair of intramolecular OH…N hydrogen bonds.     

Synthesis,Bioactivity and Crystal Structure Analysis of Diisopropyl[（4-cyanopyrazol-3-ylamino）（2-hydroxyl-phenyl） methyl]phosphonate

The title compound,diisopropyl[(4-cyanopyrazol-3-ylamino)(2-hydroxylphenyl) -methyl] phosphonate was synthesized by the addition reaction of diisopropyl phosphite and N-(4-cyanopyrazole-3-yl) -2-hydroxylphenyl-imine. Its structure was characterized by IR,1H NMR,elemental analysis and single-crystal X-ray diffraction. The crystal belongs to the triclinic system,space group P1 with a = 9.1840(13) ,b = 9.2278(13),c = 12.1952(17) ,α = 93.846(2) ,β = 90.947(2) ,γ = 111.289(2) °,V = 959.9(3) 3,Dc = 1.309 g/cm3,Z = 2,μ(MoKa) = 0.173,F(000) = 400,the final R = 0.0414 and wR = 0.1196 for 2985 observed reflections(I > 2σ(I)) . The pyrazole and benzene moieties are approximately coplanar in each case. The dihedral angle between planes 1 and 2 is 82.99°. The crystal structure is stabilized by three intermolecular hydrogen bonds of O(1) -H(1) …O(2) ,N(2) -H(2) …N(3) and N(2) -H(2) …O(1) . Preliminary bioassay indicated that the title compound possessed antiviral activity to some extent.     

Synthesis,Crystal Structure and Biological Activity of 8-（（4-（（2,3-diaminopyridin-4-yl）oxy）-3-fluorophenyl）-amino）-2-（4-fluorophenyl）-3-methyl-2,7-naphthyridin-1（2H）-one

The new title compound 8-((4-((2,3-diaminopyridin-4-yl)-oxy)-3-fluorophenyl)-amino)-2-(4-fluorophenyl)-3-methyl-2,7-naphthyridin-1(2H)-one(C26H20F2N6O2, Mr = 486.48) has been prepared and determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/c with a = 15.365(3), b = 13.144(2), c = 11.863(2), β= 108.882(3)°, Z = 4, V = 2267.0(7)3, Dc = 1.425 g/cm3, F(000) = 1008, μ = 0.105 mm-1, MoKa radiation(λ = 0.71073), R = 0.0480 and wR = 0.1294 for 3197 observed reflections with I 2σ(I). X-ray diffraction analysis reveals that the region C(substituents of 8-amino group and 3-methyl group on the 2,7-naphthyridin-1(2H)-one ring) of compound 6 are effectively planar. Intramolecular and intermolecular hydrogen bonds together with π···π interations are found in the structure. In addition, compound 6 shows potent c-Met and c-Kit kinase inhibition activities.     

Synthesis,Crystal Structure and Bioactivity of N-（phenethylcarbamothioyl）cyclopent-1-enecarboxamide

The compound N-(phenethylcarbamothioyl)cyclopent-1-enecarboxamide was synthesized by the reaction of cyclopent-1-enecarbonyl isothiocyanate with phenethylamine in acetone, and its structure was characterized by IR, 1H NMR and X-ray crystal structure determination. The crystal of the title compound belongs to triclinic, space group P1 with a = 6.9500(7), b = 9.4618(9), c = 11.3256(11), α = 71.522(9), β = 81.830(8), γ = 89.237(8)o, Z = 2, V = 698.80(12)3, Dc = 1.304 g/cm3, μ = 0.225 mm-1, F(000) = 292, R = 0.0413 and wR = 0.1073 for 1996 observed reflections with I 2σ(I). Intramolecular N(2)–H(2)···O(1) interactions as well as intermolecular N(2)–H(2)···O(1), N(1)–H(1)···S(1) and C(12)–H(12)···S(1) hydrogen bonds help to stabilize the crystal structure. X-ray diffraction analysis reveals that the structure of the new compound exhibits a one-dimensional infinite chain-like structure. The cytotoxicity of the compound was investigated by MTT assay. The results show that the compound is toxic to A549 tumor cell.     

Synthesis, Crystal Structure and Band Structure of EuMg6Sn3.67

EuMg6Sn3.67 has been synthesized by reacting the mixture of the corresponding pure elements at high temperature, and structurally characterized by single-crystal X-ray diffraction study. EuMg6Sn3.67 crystallizes in hexagonal space group P63/m (No. 176) with a = 11.7259(4), c = 4.5507(2), V = 541.88(4)3 , Z = 2, Mr = 734.60, Dc = 4.502 g/cm3 , μ = 14.348 mm-1 , F(000) = 638, the final R = 0.0128 and wR = 0.0378 for 464 observed reflections with Ⅰ > 2σ(Ⅰ). EuMg6Sn3.67 is closely related to the Ba2Mg12Ge7.33 structure type and features a three-dimensional Mg6Sn3.67 framework with one-dimensional hexagonal tunnels along the c-axis occupied by the Eu atoms. Electronic structure calculation indicates that the title compound is metallic.     

Synthesis, Crystal Structure and Band Structure of Sm3In5

A new intermetallic compound, Sm3In5, has been synthesized by solid-state reaction of the corresponding pure elements in a welded niobium tube at high temperature. Its crystal structure was established by single-crystal X-ray diffraction. Sm3In5 crystallizes in orthorhombic, space group Cmcm with a = 10.0137(8), b = 8.1211(7), c = 10.3858(8) , V = 844.60(1) 3, Z = 4, Mr = 1025.15, Dc = 8.062 g/cm3, μ = 33.791 mm-1, F(000) = 1724, the final R = 0.0346 and wR = 0.0775 for 533 observed reflections with I > 2σ(I). The structure of Sm3In5 belongs to the modified Pu3Pd5 type. It is isostructural with La3In5 and β-Y3In5, containing one-dimensional (1D) [In5] cluster chains along the c-axis, which are weakly interconnected via In-In bonds (3.345 ) to form a three-dimensional (3D) structure. The samarium cations are located at the voids between the 1D [In5] cluster chains. Band structure calculations based on Density Function Theory (DFT) method indicate that Sm3In5 is metallic.     

极性金属间化合物LuSn2的合成、晶体结构及能带特征

在惰性气氛氩气保护下,通过高温固相反应合成得到了一个新的二元极性金属间化合物LuSn2。经X-射线单晶衍射与元素分析等方法确定了其晶体结构。LuSn2属正交晶系,空间群为Cmcm,晶体学参数a=0.435 11(10)nm,b=1.601 6(4)nm,c=0.427 80(8)nm,V=0.298 12(11)nm3,Z=4,R1=0.017 0,wR2=0.032 4。LuSn2属于ZrSi2结构类型,其结构中包含有一维"之"字型Sn链与二维四方格子状Sn层,Lu原子排列在Sn链与Sn层的空隙中。能带结构计算表明LuSn2呈金属导电性。     

极性金属间化合物MgIn2的合成、晶体结构及能带特征

在惰性气氛氩气保护下,通过高温固相反应合成得到了一个二元极性金属间化合物MgIn2。经X-射线单晶衍射与元素分析等方法确定了其晶体结构。MgIn2属立方体系,空间群为Fd3m(No.227),晶体学参数a=0.956 13(16)nm,V=0.874 1(3)nm3,Z=8,R1=0.035 3,wR2=0.082 8。MgIn2属于CaAl2结构类型,其结构特征为[In4]四面体通过共用顶点In原子链接而成的三维框架结构,Mg原子填充在三维框架的空隙中。能带结构计算表明MgIn2属于金属性的化合物。     

Synthesis and Crystal and Band Structures of YbCu_6In_6 with 3D Framework

A new intermetallic compound,YbCu6In6,has been synthesized by solid-state reaction of the corresponding pure elements in a welded tantalum tube at high temperature.Its crystal structure was established by single-crystal X-ray diffraction.YbCu6In6 crystallizes in tetragonal space group I4/mmm with a = 9.2283(5),c = 5.4015(4),V = 460.00(5) 3,Z = 2,Mr = 1243.20,Dc = 8.976 g/cm3,μ = 38.243 mm-1,F(000) = 1076,and the final R = 0.0258 and wR = 0.0602 for 173 observed reflections with I > 2σ(I).The structure of YbCu6In6 belongs to the ThMn12 type.It is isostructural with RECu6In6(RE = Y,Ce,Pr,Nd,Gd,Tb,Dy),containing one-dimensional(1D) [Cu10In6] cluster chain along the c axis,which is interconnected via sharing the Cu(1) atoms to form a three-dimensional(3D) [Cu6In6] framework with Yb atoms encapsulated in the 1D tunnels along the c axis.Band structure calculations based on Density Functional Theory(DFT) method indicate that YbCu6In6 is metallic.     

Synthesis, Crystal Structure and Band Structure of Eu3Sn5 with Arachno-type Zintl Anions

A new polar intermetallic compound, Eu3Sn5, has been synthesized by solid-state reaction of the corresponding pure elements in a stoichiometric ratio in a welded tantalum tube at high temperature. Its crystal structure was established by single-crystal X-ray diffraction. Eu3Sn5 crystallizes in orthorhombic, space group Cmcm with a = 10.466(11), b = 8.445(8), c = 10.662(12) , V = 942.4(17) 3, Z = 4, Mr = 1049.33, Dc = 7.396 g/cm3, μ = 32.578 mm-1, F(000) = 1756, the final R = 0.0236 and wR = 0.0472 for 535 observed reflections with I > 2σ(I). Its structure belongs to the modified Pu3Pd5 type. It is isostructural with Sr3Sn5 and Ba3Sn5, featuring [Sn5] square pyramidal clusters described as "arachno" according to the Wade-Mingos electron counting rules. The europium cations are located at the voids between the square pyramidal clusters. Results of the extended Hückel band structure calculations indicate that Eu3Sn5 is metallic.     

Synthesis, Crystal Structure and Chemical Bonding of a New Binary Lu-Sn Phase: Lu11Sn10

A new tetragonal phase of Lu11Sn10 is obtained from high temperature reaction of the pure elements in a welded tantalum tube. Its crystal structure was established by single-crystal X-ray diffraction. Lu11Sn10 crystallizes in the tetragonal space group I4/mmm (No.139) with a=11.2953(18), c=16.424(4), V=2095.5(7)3 , Z=4, Mr=3111.57, Dc=9.863 g/cm3 , μ=62.897 mm-1, F(000)=5124, and the final R=0.0348 and wR=0.0894 for 706 observed reflections with I>2σ(I). The structure of Lu11Sn10 may be derived from the Ho11Ge10 structural type. It is isostructural with Dy11Sn10 , featuring a three-dimensional (3D) framework composed of [Sn4] squares and [Sn2] dimers interlinked via Sn-Sn bonds with two types of one-dimensional (1D) tunnels along the c-axis, which are occupied by isolated Sn atoms, [Sn2] dimers and all the Lu atoms. Band structure calculation based on density functional theory method indicates that Lu11Sn10 is metallic.     

Crystal Structure, Energy Band and Optical Properties of Phosphate In（PO3）3

1 INTRODUCTION stand the chemical bonding properties and electronic origins of optical transition for solid In(PO3)3, the During the past decades, many indium phosphates crystal energy band and optical response functions have been reported and researched on their conduc- are also calculated. tivity anisotropy, band structure and optical proper- ties[1, . However, to our current knowledge, the com- 2] 2 EXPERIMENTALAND pounds containing alkaline-earth metals are rarely COMPUTATIO…     

Synthesis and Crystal Structure of Borate Oxide Co_3BO_5

1　ＩＮＴＲＯＤＵＣＴＩＯＮＳｏｌｉｄ ｓｔａｔｅｂｏｒａｔｅｓｅｘｈｉｂｉｔａｖａｒｉｅｔｙｏｆｐｈｙｓｉｃａｌａｎｄｃｈｅｍｉｃａｌｆｅａｔｕｒｅｓ,ｒａｎｇｉｎｇｆｒｏｍｎｏｎｌｉｎｅａｒｏｐｔｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆ β ＢａＢ2 Ｏ4(β ＢＢＯ) [1 ] ｔｏｔｈｅｃａｔａｌｙｔｉｃａｃｔｉｖｉｔｙｏｆＣｕ2 Ａｌ6Ｂ4Ｏ1 7[2 ] ,ｗｈｉｃｈｈａｖｅａｔｔｒａｃｔｅｄｇｒｅａｔａｔｔｅｎｔｉｏｎｏｆｍａｎｙｓｃｉｅｎｔｉｆｉｃｒｅｓｅａｒｃｈｅｒｓ.Ａｓｐａｒｔｏｆｏｕｒｅｆｆｏｒｔｔｏｓｙｎｔ…     

O－（3，4－二甲苯基）－苯基－硫代膦酰基氨基异马来酰胺的合成和晶体结构

标题化合物Ｃ_（１８）Ｈ_（１７）Ｎ_２Ｏ_３ＰＳ是Ｏ－芳基苯基硫代膦酰肼与马来酸酐加成后的关环产物，其晶体属于单斜晶系，空间群Ｐ２_１／ｃ，α＝１０．７２６（３），ｂ＝１０．２４８（２），ｃ＝１７．４５４（５）Ａ，　β＝１０４．０１（２）°，Ｍｒ＝３７２．３７，Ｖ＝１８６１．４Ａ３，Ｄｃ＝１．３３ｇ／ｃｍ￣３，Ｚ＝４，μ（ＣｕＫα）＝２４．６８ｃｍ￣（－１），Ｆ（０００）＝７７６，Ｒ＝０．０７０，Ｒｗ＝０．０６７。结构由直接法解出，分子中Ｐ原子与其相邻的Ｓ，Ｏ，Ｎ，Ｃ原子形成变形四面体构型。