CRYSTAL STRUCTURE OF BIS(μ-SULFIDO)-BIS[OXO-DIETHYL-DITHIOCARBAMATO-MOLYBDENUM(V)]

<正> INTRODUCTION. Reaction of MoCl_3·3H_2O with dithio-carbamate to synthesize dinuclear or trinuclear molybdenum complexes is an interesting topic. We have obtained sulfido-bridged molybdenum(V) complex Mo_2(μ-S)_2O_2(S_2CNEt_2)_2 by reacting MoCl_3·3H_2O with NadtcEt_2 in MeOH solvent. The molecular structure of the title compound was characterized by, X-ray structure determination. We report the result of the structure determination in this paper.     

SYNTHESIS AND CRYSTAL STRUCTURE OF BIS (TETRAETHYLAMMONIUM) BIS[μ-(l,2-DITHIOETHELENE)-S,S']-BIS[l,2-DITHIOETHELENE-S,S']-DI-IRON(Ⅲ)

<正> INTRODUCTION. In our attempts of chemical simulation of the active center of nitrogenase we have been interested in the reaction system of various ferrous thiolates with thiomolybdatee. In previous papers, we have reported the syntheses of ferrous monodentothiolates and their reactions with tetrathiomolybdate. The possible structure type of ferrous thiolates when bidentothiols are used inspired our interest in this work.     

CRYSTAL STRUCTURE OF (μ-PYRAZINE)-BIS[DIAQUA(IMINODIACETATO) COPPBR(Ⅱ)] DIHYDRATE

<正> PRELIMINARY INFORMATION. Recently multinuclear complexes with bridging ligand have been found possibly to possess special catalytical and special electric properties. Therefore more attention has been paid to such complexes. This study is a part of systimatic investigations on structures and properties of the kind of complexes, which have been carred out previously.     

CRYSTAL STRUCTURE OF (μ-OXO)-BIS[BIS(DIETHYLDITHIOCARBAMATO)- OXO-MOLYBDENUM]

<正> INTRODUCTION. The reaction oF MoCl_3·3H_2O with dithiocarbamate in organic solvents is a interesting research area. Thus, several dinuclear and trinuclear molybdenum complexes have been synthesized The dinuclear oxo-dridged molybdenum compound was obtained by this reaction in acetonmethanol mixed solvent. The molecular configuration has been characterized     

SYNTHESIS AND CRYSTAL STRUCTURE OF S-BENZYL-N-(FERRO-CENYL) METHYLIDENEDITHIOCARBAZATE

<正> C_19H_18N_2S_2Fe, Mt = 394. 33, monoclinic, P2_1/c,a = 7. 726 ( 7) , b = 11. 098(1 ),c= 21. 300(6) A ,β=100. 40(7)°,V= 1796. 2 A3,Z = 4,DC = 1. 458g·cm-3;MoKa,(λ=0. 71073A),μ=10. 635cm-1,F(000) = 816,room temperature,final R=0. 098,Rw=0. 121 for 3250 unique reflections,2306 reflections with I>3σ(I). The title compound is a new Schiff base which is made by condensation of formoylferrocene, FC-CHO and S-benzyldithiocarbazate. The mean Fe-C distance is 2. 04 A. The mean C-C distances in the cyclopentadienyl rings with and without side chain are 1. 43 and 1. 38 A,respectively. Electron migration from cyclopentadienyl ring to side chain is evident. A substantial Kekule-type distortion of the phenyl ring on the side chain is indicated.     

SYNTHESIS AND CRYSTAL STRUCTURE OF (β-PHENYL) CAR-BOXYLETHYLTRICHLOROGERMANIUM

<正> The crystal and molecular structure of the title compound was determined by single crystal X-ray diffraction. The complex crystallizes in the triclinic space group P1,a=8. 450(4),b=11. 730(3),c=14. 718(6)A ,α=104. 50(3),β=103. 71 (4),γ=69. 20(3)°,Z=4,V=1302. 4(9) A3,Dc,= 1.67g/cm3, λ(MoKa) = 0. 71069 A ,μ=30. 7/cm,F(000) = 646,Mr = 327. 6,final R=0. 037 for 2198 reflections with I<3σ(I). There are two molecules of different conformation in an asymmetric unit. Atom Ge is coordinated by three chlorine atoms and one carbon atom to form an irregular tetrahedron.     

THE SYNTHESIS AND X-RAY CRYSTAL STRUCTURE STUDIES OF (DI-3-INDOL YL )M ETH YLFERROCENE

<正> A novel anhydrous zinc chloride catalyzed condensation reaction of ferrocenealdehyde with indole in solid state gave the title compound (Di-3-indolyl) methylferrocene ((C8H6N)2CHC5H4FeC5H5) selectively, and its crystal structure has been determined by X-ray diffraction analysis. The crystal belongs to triclinic system, space group P1, with cell parameters a = 9. 624(2), b = 9. 957(2), c=11. 295 (4)A,α=92. 17(2), β=92. 23(2), γ=111. 30(1)°, V=985. 4A3, Mr = 430. 33, Z = 2, Dx = 1. 44g/cm3,μ= 7. 8cm-1, F(000) = 444. The final R = 0. 056 for 3027 observed reflections.     

SYNTHESIS AND CRYSTAL STRUCTURE OF A HETERODINUCLEAR COMPLEX OF PALLADIUM SILVER WITH BRIDGING BIS-( DIPHENYLPHOSPHINO ) METHANE [ 1 ]

<正> A heterodinuclear complex, trans- dicyano- palladium (Ⅱ)- bis [β- bis (diphenylphosphino)methane]-nitritosilver(Ⅰ),has been prepared by treatment of trans-(NC)2Pd(dppm)2 with AgNO2 and characterized by elementary analysis, ir, nmr, and X-ray crystal structure determination. AgPdC52H44N3O2P4,Mr= 1081. 12,monoclinic,space group P21/c,a=14. 745(7),b= 19. 208(7),c= 17. 486(6) A ,β=94. 99°(2) ,and Z = 4. The final R=0. 032 for 8673 unique reflections. In the molecule,the Pd -Ag distance is 3. 205 A. The palladium moiety has an approximately square planar geometry, and the silver moiety has a severely distorted tetrahedral geometry.     

THE CRYSTAL STRUCTURE OF DI-μ-CHLORO-HEXACHLORO-BIS (ETHYL-CYANOFORMATE-N) DITITANIUM (IV)

Abstract

Crystals of the adduct titanium tetrachloride-ethylcyanoformate (1–1) are monoclinic a =9.06 Å, b =18.36 Å, c =13.83 Å, β =113°.2, space group C2/c, Z =8. The structure was solved by application of X-Ray diffraction techniques at room temperature. Atomic positions were refined by a full-matrix least-squares method to a final R of 0.049 using 829 non-zero independent reflections. This compound is dimeric with a double chlorine bridge between titanium atoms. Titanium is octahedrally coordinated to five chlorine atoms and to the nitrogen atom of the nitrile group and not to the oxygen atom of the carbonyl group. Thus in this complex the nitrogen atom is a better donor than the carbonyl oxygen.     

PHENYL-2-BENZOTHIAZOLE-BASED α-AMINOPHOSPHINES: SYNTHESIS,CRYSTAL STRUCTURE,AND PHOTOPHYSICAL PROPERTIES

Journal of Structural Chemistry - Condensation reactions of diphenylphosphine, 2-(benzo[d]thiazol-2-yl)aniline (NH2-pbt) and a series of aldehydes RC(O)H (R&nbsp;=&nbsp;phenyl, 2-furanyl...     

SYNTHESIS AND CRYSTAL STRUCTURE OF BaGa_4

<正> BaGa4,tetragonal space group I4/mmm with lattice parameters a=b=4.5650(8), c=10.786(2)A, V=224.77(7)A3,Dc=6.15 gcm-3,and Z=2,λ(MoKα)=0.71069A,μ=335.93cm-1,F(OOO) =360. The final R = 0.045, Rw=0.069.The distribution of valence electrons in crystal Ba6a4 is described and a suggestion that two different types of gallium atoms form covalent bonds by utilizing sp3 and dsp3 hybrid orbitals respectively is proposed.     

SYNTHESIS AND CRYSTAL STRUCTURE FOR PALLADIUM(Ⅱ) DITHIOCARBIMATO COMPLEX

ＳＹＮＴＨＥＳＩＳＡＮＤＣＲＹＳＴＡＬＳＴＲＵＣＴＵＲＥＦＯＲＰＡＬＬＡＤＩＵＭ（Ⅱ）ＤＩＴＨＩＯＣＡＲＢＩＭＡＴＯＣＯＭＰＬＥＸＪｉｅＹｉｎｇＷＵ；ａｎｄＹｕＰａｎｇＴＩＡＮ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＦｕｙａｎｇＮｏｒｍａｌＣｏ...     

SYNTHESIS AND CRYSTAL STRUCTURE OF Ta_3(Te_2)_6

<正> Ta3(Te2)6, Mr = 2074. 04, tetragonal, P4/ncc, a = 9. 204(1) A , c=20,401(8) A, V=1728. 3 A 3, Z = 4, Dc = 7. 97g/cm3, λ(MoKa) = 0. 71073 A . μ= 386, 3cm-1,F(000) = 3372, T= 296K , R= 0. 027, Rw = 0, 029 for 493 observed unique reflections. The structure is composed of infinite [TaTe4] chains along the e axis. In these chains, the Ta sequences distort in such a way that linear Ta, clusters are formed.     

SYNTHESIS AND CRYSTAL STRUCTURE OF Mo_2OS(μ-S)_2[S_2CNC_4H_8]_2

Mo_2OS(μ-S)_2[S_2CNC_4H_8]_2, Mr=612.61, triclinic, PI, a=8.666(2)(?), b=17.366(6)(?), c=6.708(1)(?), α=98.29(2)°, β=97.27(2)°, γ=79.36(2)°, V=976.5(5)(?)~3, Z=2, Dc=2.03g/cm~3, MoKα(λ=0.71069(?)), μ=19.75cm~(-1), F(000)=588, Final R=0.064, Rw=0.073 for 1517 unique intensity data (I>3σ(I)). The binuclear unit of [Mo_2OS_3] has a new asymmetrically terminal coordinated configuration with Mo-Mo distance of 2.807(3)(?).     

SYNTHESIS AND CRYSTAL STRUCTURE OF (DIETHYLENETRIA-MINE) (ACETATE) ZINC PERCHLORATE

<正> The preparation and molecular structure of the novel five-coordinate zinc compound CZn(C4H13N3) (C2H3O2)]ClO4(Mr= 327. 04) are described. The crystal belongs to orthorhombic space group Pn21a with a=8. 352(2) ,6=8. 642(2) ,c=17. 758 (4)A,V=1282A3,Z=4,0c=1.69gcm-3,Dm=1.70gcm-3,F(000) = 672,u(MoKa)= 22.01cm-1.The complex cation has a distorted trigonal bipyramidal geometry wifr each acetat anion C2H3O2- bridging two zinc atoms so that a chain structure along a axis is formed by the complex cations [Zn(C4H13N3)(C2H3O2)]+.     

SYNTHESIS AND CRYSTAL STRUCTURE OF A BINUCLEAR COPPER (II) COMPLEX BRIDGED BY OXAMIDATO,Cu2(μ-CIS-OXPN)(PHEN)(NO3)2

Abstract

The complex [Cu₂(μ-cis-oxpn)(phen)(NO₃)₂], where oxpn = N,N′ -bis(3-aminopropyl) oxamidato and phen = 1,10-phenanthroline, has been synthesized and its crystal structure determined by X-ray methods. The structure consists of binuclear copper (II) molecules in which the Cu(II) atoms are bridged by oxamidato group in the cis conformation, the Cu—Cu distance being 5.205(10) Å. The coordination geometry around Cu (II) atoms is square pyramidal; the apex is occupied by a more weakly bonded O atom from a nitrate group. Electron delocalization is observed in the bridging oxamide moiety. The co-planarity of bridge ligand and basal plane around Cu (II) atoms may benefit spin super-exchange between two Cu (II) atoms. IR spectra of the binuclear complex are discussed.     

SYNTHESIS,CRYSTAL STRUCTURE AND PROPERTIES OF TETRAETHYLAMMONIUM BIS[BIS(2-OXYPHENYL)DISULFIDE-O,O'''',S]MANGANESE

The synthesis,crystal structure and properties of the firstMn(III)-disulfide complex(Et_4N)[Mn(mp-mp)_2]were reported with the Mn(III)ion in a S_2O_4 octahedron distorted due to Jahn-Teller effect.Spectroscopicdata revealed its paramagnetic properties.     

SYNTHESIS AND CRYSTAL STRUCTURE OF POLYMERIC STRUCTURE CONFLEX [Ag_2(C6H5CS_2)_2]_n

<正> Structural units Ag2(C6H5CS2)2,in which the distance between the unbridged silver atoms is only 2.890A, are connected by Ag...S interactions of neighbouring units along a and b axes to form a nonmolecular poly-meric structure [Ag2(C6H5CS2)2]n.     

SYNTHESIS AND CRYSTAL STRUCTURE OF PENTANUCLEAR HETEROMETALLIC Pd(II)–La(III) ACETATE COMPLEX

Journal of Structural Chemistry - The structure of a novel pentanuclear heterometallic complex [Pd3La2(OOCMe)12(MeCOOH)4] with an unusual ratio of metals 3Pd:2La is studied by XRD. The complex is...     

SYNTHESIS AND CRYSTAL STRUCTURE OF A ONE-DIMENSIONAL POLYMERIC CLUSTER[Mo(μ-S)_2Ag(μ-S)_2·α-MePyH]_n

Reaction of (NH_4)_2MoS_4 with AgI in α-MePy gives the title com-pound,an X-ray analysis of which shows that the molecule forms aone-dimensional polymeric chain with continuous metal-metal bonds.