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.     

CRYSTAL AND MOLECULAR STRUCTURE OF BIS(O,O'-DICYCLOHEXYLDITHIOPHOSPHATO)-NICKEL(Ⅱ)

<正> Ni[(C6H11O)2PS2]2, Mr=627.39, Monoclinic, P21/n, a=11.802(7), b= 9.336(2), c=14.177(5) A,B=96.72(4)°,V=1551.3A3, Z=2, Dc=1.343g·cm-3, MoKα radiation λ=0.71073A, F(000)=648e, R=0.068 for 2642 reflections. Ni(Ⅱ) atom is surrounded by four sulfur atoms, forming a square.     

CRYSTAL AND MOLECULAR STRUCTURE OF (CYANOETHYLOXY-FERROCENYL)-p-FLUOROPHENYL METHANE

<正> The crystal structure of (Cyanoethyloxy-ferrocenyl)-p-fluoro-phenyl methane (Fc-C(H)OCH2CH2CN, Mr=363.23) belongs to the monoclinic spacegroup P21/c with unit cell parameters: a =9.751(3), b =18.448(4), c =9.891(4)A,β= 105.71(3)°,V= 1712.7A3,Z=4,Dc=1.409g/cm3,μ=8.930cm-1,λ=0.71073A (MoKα),R=0.05. The structure and reactivities of the title compound are compared with those of its isomer.     

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.     

CRYSTAL AND MOLECULAR STRUCTURE OF TETRACHLORO-BIS[BIS(2-ETHYLHEXYL)-SULFIDE]-PLATINUM(IV)

<正> C32H68Cl4S2Pt, Pt[(BEHS)2Cl4], Mr=853.9, space group P21/a, a =10.445(3), b=15.012(4), c = 13.506(5) A,β=101.43(3)°,V=2076(1) A3, Z=2, DC=1.37 g·cm-3, MoKa radiation, u= 39.3 cm-1, F(OOO) = 876 e, R = 0.053 for 1790 reflections. Pt(IV) is coordinated by four chloro atoms and two S atoms of BEHS, forming a somewhat distorted octahedron with Pt-S of 2.366 and Pt-Cl of 2.309A. The packing pattern of the long BEHS chain may allow the existence of conformational disorder.     

MOLECULAR STRUCTURE OF (BENZOPHENONE)BIS(TRICARBONYLCHROMIUM)

<正> The title crystal belongs to monoclinic system, space group P21/c, with 3=14.794(2), b=7.360(1), c=16.029(2) A, β=94.95(2)0, Z=4, V=1738.9(6)A3, Dx=1.735 g/cm3. The final R=0.047, Rw=0.052.     

STRUCTURE AND CATALYTIC PROPERTIES OF PALLADIUM(II) (ACETYLACETONATO- κ2O,O′)BIS(TRIS(DIETHYLAMINO)PHOSPHINE) TETRAFLUOROBORATE

Journal of Structural Chemistry - The structure of complex [Pd(acac){P(NEt2)3}2]BF4 (I) is determined by XRD. In the crystal structure of I, the coordination sphere of palladium is characterized by...     

PREPARATION AND PROPERTIES OF TETRA (p-VINYLPHENOXY) METALLOPHTHALOCYANINES

This paper describes the preparation and Langmuir-Blodgett (LB) monomolecular film formation of H_2, Cu, Ni, Co, and Zn phthaloeyanine compounds with p-vinyiphenoxy peripheral substituent on each benzo ring at either 2- or 3- position [i.e., tetra (p-vinylphenoxy) substituted isomer mixture]. These phthalocyanine derivatives form stable LB films at the film pressures greater than 10 dynes/cm. The surface pressure-area isotherms indicate that the phthalocyanine units are densely packed with a eofacial orientation. Schottky cells of [Indium-Tin Oxide/LB film/Al] were prepared and their electronic properties were examined. Much better rectifying properties, diode parameter, break-down potential and mechanical strength were notified by the post-polymerization of LB-layers. On exposing the polymerized films to tetrahydrofuran vapor, the absorption maxima of Q-band shift bathochromically by about 100 nm, being sensitive to diode laser light.     

STRUCTURE AND CATALYTIC PROPERTIES OF (ACETYLACETONATO-κ2O,O′)BIS(TRI(2-FURYL)PHOSPHINE) PALLADIUM(II) TETRAFLUOROBORATE

Journal of Structural Chemistry - Reaction of Pd(acac)2 with BF3·OEt2 in the presence of tri(2-furyl)phosphine in toluene yields complex [Pd(acac)(TFP)2]BF4 (I) (TFP is tri(2-furyl)phosphine)...     

THE CRYSTAL STRUCTURE OF BIS(N-METHYLIMIDAZOL)- PALLADIUM OXALATE MONOHYDRATE

<正> INTRODUCTION. In recent years, Zhang Liangfu et al. were successful in using complexes composed of chelate ligand of diphosphine, dinitrogen and transition metal elements of lower valence multi-electrons to activate C-H bond. Recently, we synthesized complexes of bis(N-methylimidazol) ligand with palladium(Ⅱ) or platinum(Ⅱ) oxalate. These compounds activate also     

THE STRUCTURE OF TETRABUTYLAMMONIUM BIS(1,3-DITHIO-2-THION-CYCLOPENTENE-4, 5-DITHIOLATE)PALLADIUM(Ⅱ)

<正> Mr=984.05 monoclinic P21/c a=8.474(1),b=14.768(3), c=19.494(3) A,6=96.42(1)0, V=2424.5(7)A3, Z=2, (Mokα)=8.Hem-1, F(000)=1039.91, room temperature. The final R=0.0357 for 2696 independant reflections. The Pd(C3S5)22-ion is nearly planar and the Palladium(Ⅱ)-sulfur coordination polyhedron is square planar with Pd-S distances of 2.315A and 2.311A.     

CRYSTAL AND MOLECULAR STRUCTURE OF TETRAPHENYLDIARSINE

<正> The title compound, C24H20As2(Mr=458.24), crystallizes in mono-clinic with space group P21/n and a=6.268(2), b=7.494(2), c=21.340(7)A, β= 91.027(3)°, V=1002.6 A3, Z=2, D.x=1.518gcm-3. The final value of R is 0.059 for 1619 observed reflections. The four phenyls arrange in a staggered trans-conformation around the As-As' bond.     

CRYSTAL AND MOLECULAR STRUCTURE OF THE ADDUCT OF BIS [4,4,4-TRIFLUOR-1-(2-THIENYL) Butandion-1,3] COPPER (Ⅱ) WITH DIMETHYLFORMAMIDE, [Cu(TTA)_2(DMF)]

<正> [Cu(C8H4F3O2S)2(C3H7NO)], Mr = 579. 0, monoclinic, P21/c, a = 9. 4851(6), b = 26. 6574(6), c=9.2619(6) A ,β=96.08(3)°, V = 2328.7A3, Z=4, Dc=1. 65gcm-3, μ(MoKa) = 7. 2cm-1, F (000) = 1172, MoKa radiation, final R = 0. 074 and Rw = 0. 068 for 1841 reflections with I≥3σ(Ⅰ). The Cu(Ⅱ) atom is coordinated by five oxygen atoms, one of which from DMF is in the axial position, to form a square pyramidal geometry. That the thenoyl groups in the ligands take the cis-form around the Cu(Ⅱ) atom is explained by the hydrogen bonding effect.     

CRYSTAL AND MOLECULAR STRUCTURE OF N, N-PLATINUM-DIETHYL-DICHLORIDEDI-L-ASPARTATE

This paper reports the crystal and molecular structure of title compound. 3978 three-dimensional independent reflections were collected by Syntex R3 four circle diffractometer. The crystal is monoclinic with space group P2_1, a=8.074(1), b=11.309(4), c=27.793(9), β=106.84°(2), Z=4. The molecular formula is Pt(C_8 H_(15)O_4N)_a Cl_2. The crystal structure was solved by Patterson method and refined by block matrix least squares refinement techniques. The final R factor is 0.039.The result of crystal structure analysis shows that Pt(Ⅱ) has a dsp~2 hybrid orbital and square coordination. Two C1 atoms are located oppositely to two diethyi-dichloride-di-L-aspartare. N atoms have sp~3 tetrahedral hybrid configurations and form the coordinate bonds with Pt(Ⅱ) atom using their lone pair electrons. By reason of molecular packing and due to the formation of inner hydrogen bonds in the complex molecule, the configuration of L-aspartic acid in the title complex is more twisted than that of L-and DL-aspartic acid     

CRYSTAL AND MOLECULAR STRUCTURE OF RABDOSERRIN-B

<正> INTRODUCTION. Four compounds of diterpenoids that have in vitro cytotoxity against cultured Hala cells have been obtained by means of extraction from Rabdosia serra(Maxim) Hara, a chinese medical herb. They are Rabdoserrin A (Rab A), Rabdoserrin B (Rab B), Excisanin A and Kamebakaurin (Kam). Among them, Rab A and Rab B are new compounds. Crystal structures of Rab A and Kam have been solved. The chemical structure of Rab B has been     

MOLECULAR STRUCTURE AND SPECTRAL STUDIES OF Ni(ENAC)

<正> C12H20N2O2Ni,Mr = 283. 02, orthorhombic, Pbn21 ,a = 10. 269 (2), b = 12. 182(2),c= 10. 348(1) A,V=1294.5 A3,Z = 4,DC = 1. 452 g/cm3,MoKa radia-tion(λ= 0.71073 A ) ,μ= 14. 96 cm-1, F (000) = 600, R = 0. 058 for 1131 reflections. The Ni (Ⅱ ) ion in This molecule has a square planar configuration. The three chelate rings formed by Ni atom and ENAC2- are coplanar with the plane of NiO2N2. Ultra violet-visible and IR spectra are in agreement with the crystal structure data.