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1.
René Guardiola Romero Angel Dago Morales Julio Duque Rodríguez José Fernández Bertrán 《Transition Metal Chemistry》1992,17(6):573-574
The structure of K3(Me4N)3[Co(CN)6]2·3H2O has been determined from three-dimensional X-ray diffraction data. The unit cell is formed by parallel layers of cobalt
octahedra [CoC6] and potassium octahedra, [K(1)N5O(1)], separated byc/2. In each layer both types of octahedra are located alternatively. The [MeN4]+ tetrahedra are located in the cavities between the two layers of octahedra. The crystal structure of this compound is the
first example of its type.
TMC 2483 相似文献
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Karl Eberhard Bessler Lincoln Lucílio Romualdo Victor Marcelo Deflon Adelheid Hagenbach 《无机化学与普通化学杂志》2000,626(9):1942-1945
Preparation and Crystal Structures of Ag[N(CN)2](PPh3)2, Cu[N(CN)2](PPh3)2, and Ag[N(CN)2](PPh3)3 The coordination compounds Ag[N(CN)2](PPh3)2 ( 1 ), Cu[N(CN)2](PPh3)2 ( 2 ), and Ag[N(CN)2](PPh3)3 ( 3 ) are obtained by the reaction of AgN(CN)2 or CuN(CN)2 with triphenylphosphane in CH2Cl2. X‐ray structure determinations were performed on single crystals of 1 , 2 , and 3 · C6H5Cl. The three compounds crystallize monoclinic in the space group P21/n with the following unit cell parameters. 1 : a = 1216.07(9), b = 1299.5(2), c = 2148.4(3) pm, β = 99.689(13)°, Z = 4; 2 : a = 1369.22(10), b = 1257.29(5), c = 1888.04(15) pm, β = 94.395(7)°, Z = 4; 3 · C6H5Cl: a = 1276.6(4), b = 1971.7(3), c = 2141.3(5) pm, β = 98.50(3)°, Z = 4. In all structures the metal atoms have a distorted tetrahedral coordination. The crystal structure of 3 · C6H5Cl shows monomeric molecular units with terminal coordinated dicyanamide. The crystal structure of 1 is built up by dinuclear units, which are bridged by dicyanamide ligands. However, the crystal structure of 2 corresponds to a onedimensional coordination polymer, bridged by dicyanamide anions. 相似文献
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Studies of Polyhalides. 22. On Dimethyldiphenylammoniumpolyiodides (Me2Ph2N)In with n = 3, 13/3, 6, and 8: Preparation and Crystal Structures of a Triiodide (Me2Ph2N)I3, Tridecaiodide (Me2Ph2N)3I13, Dodecaiodide (Me2Ph2N)2I12, and Hexadecaiodide (Me2Ph2N)2I16 The new compounds [(CH3)2(C6H5)2N]I3, [(CH3)2(C6H5)2N]3I13, [(CH3)2(C6H5)2N]2I12 and [(CH3)2(C6H5)2N]2I16 have been prepared by the reaction of dimethyldiphenylammonium iodide [(CH3)2(C6H5)2N]I with iodine I2 in ethanol. Their crystal structures have been determined by single crystal X-ray diffraction methods. The structure of the triiodide may be described as a layerlike packing of pairs of nearly linear symmetric anions and tetraedral cations. The tridecaiodide forms zig-zag chains of iodide ions and iodine molecules with the iodide ion also weakly coordinated by two pentaiodide groups. The dodecaiodide is built from two pentaiodide-groups, which are bridged by an iodine molecule and connected with secondary bonds forming double chains. The hexadecaiodide ion forms layers built up from two heptaiodide groups and one iodine molecule. Thus the dimethyldiphenylammonium cation stabilizes a unique series of polyiodides of extraordinary composition and structure. 相似文献
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Marchant S Tang CY Downs AJ Greene TM Himmel HJ Parsons S 《Dalton transactions (Cambridge, England : 2003)》2005,(20):3281-3290
Primary amine-gallane adducts, RH(2)N.GaH(3)[R = Me (1) and (t)Bu (2)], have been isolated for the first time from the reaction of [RNH(3)]Cl with LiGaH(4) in Et(2)O solution at ca. 273 K and characterised by their vibrational and (1)H NMR spectra. The structures of single crystals, grown at low temperatures and determined by X-ray diffraction, reveal pseudo-polymeric arrays of RH(2)N.GaH(3) molecules with Ga-N distances of 2.0424(18) and 2.058(5)A for 1 and 2, respectively. The adducts decompose at or near ambient temperatures with the elimination of H(2) and formation of the corresponding monoalkylamido derivative [RHNGaH(2)](n). The crystal structures of these at 150 K consist of either [MeHNGaH(2)](3) molecules with a "skew-boat" conformation for the cyclic Ga(3)N(3) skeleton (3) or [(t)BuHNGaH(2)](2) molecules with a four-membered Ga(2)N(2) core (4), with Ga-N distances averaging 1.986(8) and 1.991(3)A for 3 and 4, respectively. The crystalline solids 1, 3 and 4 feature intermolecular N-H...H-Ga interactions with H...H distances estimated to fall in the range 2.1-2.3 A. The significance of these is discussed. 相似文献
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Complexes [Ir(Cp*)Cl(n)(NH2Me)(3-n)]X(m) (n = 2, m = 0 (1), n = 1, m = 1, X = Cl (2a), n = 0, m = 2, X = OTf (3)) are obtained by reacting [Ir(Cp*)Cl(mu-Cl)]2 with MeNH2 (1:2 or 1:8) or with [Ag(NH2Me)2]OTf (1:4), respectively. Complex 2b (n = 1, m = 1, X = ClO 4) is obtained from 2a and NaClO4 x H2O. The reaction of 3 with MeC(O)Ph at 80 degrees C gives [Ir(Cp*){C,N-C6H4{C(Me)=N(Me)}-2}(NH2Me)]OTf (4), which in turn reacts with RNC to give [Ir(Cp*){C,N-C6H4{C(Me)=N(Me)}-2}(CNR)]OTf (R = (t)Bu (5), Xy (6)). [Ir(mu-Cl)(COD)]2 reacts with [Ag{N(R)=CMe2}2]X (1:2) to give [Ir{N(R)=CMe2}2(COD)]X (R = H, X = ClO4 (7); R = Me, X = OTf (8)). Complexes [Ir(CO)2(NH=CMe2)2]ClO4 (9) and [IrCl{N(R)=CMe2}(COD)] (R = H (10), Me (11)) are obtained from the appropriate [Ir{N(R)=CMe2}2(COD)]X and CO or Me4NCl, respectively. [Ir(Cp*)Cl(mu-Cl)]2 reacts with [Au(NH=CMe2)(PPh3)]ClO4 (1:2) to give [Ir(Cp*)(mu-Cl)(NH=CMe2)]2(ClO4)2 (12) which in turn reacts with PPh 3 or Me4NCl (1:2) to give [Ir(Cp*)Cl(NH=CMe2)(PPh3)]ClO4 (13) or [Ir(Cp*)Cl2(NH=CMe2)] (14), respectively. Complex 14 hydrolyzes in a CH2Cl2/Et2O solution to give [Ir(Cp*)Cl2(NH3)] (15). The reaction of [Ir(Cp*)Cl(mu-Cl)]2 with [Ag(NH=CMe2)2]ClO4 (1:4) gives [Ir(Cp*)(NH=CMe2)3](ClO4)2 (16a), which reacts with PPNCl (PPN = Ph3=P=N=PPh3) under different reaction conditions to give [Ir(Cp*)(NH=CMe2)3]XY (X = Cl, Y = ClO4 (16b); X = Y = Cl (16c)). Equimolar amounts of 14 and 16a react to give [Ir(Cp*)Cl(NH=CMe2)2]ClO4 (17), which in turn reacts with PPNCl to give [Ir(Cp*)Cl(H-imam)]Cl (R-imam = N,N'-N(R)=C(Me)CH2C(Me)2NHR (18a)]. Complexes [Ir(Cp*)Cl(R-imam)]ClO4 (R = H (18b), Me (19)) are obtained from 18a and AgClO4 or by refluxing 2b in acetone for 7 h, respectively. They react with AgClO4 and the appropriate neutral ligand or with [Ag(NH=CMe2)2]ClO4 to give [Ir(Cp*)(R-imam)L](ClO4)2 (R = H, L = (t)BuNC (20), XyNC (21); R = Me, L = MeCN (22)) or [Ir(Cp*)(H-imam)(NH=CMe2)](ClO4)2 (23a), respectively. The later reacts with PPNCl to give [Ir(Cp*)(H-imam)(NH=CMe2)]Cl(ClO4) (23b). The reaction of 22 with XyNC gives [Ir(Cp*)(Me-imam)(CNXy)](ClO4)2 (24). The structures of complexes 15, 16c and 18b have been solved by X-ray diffraction methods. 相似文献
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John A. Schlueter Urs Geiser Kylee A. Funk 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(2):i9-i11
The title compound, poly[potassium [diaquapenta‐μ2‐dicyanamido‐dicadmium(II)] dihydrate], {K[Cd2(C2N3)5(H2O)2]·2H2O}n, contains two‐dimensional anionic sheets of {[Cd2{N(CN)2}(H2O)2]−}n with a modified (6,3)‐net (layer group , No. 35). Two sets of equivalent sheets interpenetrate orthogonally to form a tetragonal enmeshed grid. 相似文献
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William Clegg Simon J. Coles Elaine K. Cope Francis S. Mair 《Angewandte Chemie (International ed. in English)》1998,37(6):796-798
Three different bonding modes in one molecule! The diazapentadienyl ligands in the title compound 1 adopt η1,η1-N,N-chelating plus η5-terminal, η1η1-N,N chelating plus η5-bridging, and novel η1-N plus η3-1-aza-allyl bonding modes. R=cyclohexyl. 相似文献
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The room-temperature syntheses and single-crystal structures of C(4)N(2)H(12).NH(4)Cl(3).H(2)O and C(6)N(2)H(14).NH(4)Cl(3) are reported. These novel molecular perovskites contain vertex-sharing octahedral (NH(4))Cl(6) arrays which replicate the octahedral packing in the cubic (SrTiO(3)) and 2-H hexagonal (BaNiO(3)) perovskite structures, respectively. The structures are completed by doubly protonated organic cations and, for the cubic phase, water molecules. Crystal data: C(4)N(2)H(12).NH(4)Cl(3).H(2)O, M(r) = 230.56, orthorhombic, Pbcm (No. 57), a = 6.5279(13) A, b = 12.935(3) A, c = 12.849(3) A, V = 1085.0(4) A(3), Z = 4; C(6)N(2)H(14).NH(4)Cl(3), M(r) = 238.59, trigonal, Pthremacr;c1 (No. 165), a = 16.1616(2) A, c = 22.3496(4) A, V = 5055.5(2) A(3), Z = 18. 相似文献
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1 INTRODUCTION The chemistry of organotin(IV) complexes was extensively studied due to their biological activity and coordination chemistry[1~7]. More recently, phar- maceutical properties of alkyltin(IV) complexes with dithiocarbamate ligands have bee… 相似文献
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Neutral Thiolates and a Iodothiolate of Antimony(III). Crystal Structures of Sb(SC6H5)3, Sb(SC6H2Me3-2,4,6)3, and SbI(SC6H2Me3-2,4,6)2 The crystal structures of Sb(SC6H5)3 ( 1 ), Sb(SC6 · H2Me3-2,4,6)3 ( 2 ), and the novel compound SbI(SC6H2Me3-2,4,6)2 ( 3 ) have been determined by X-ray crystallography. In addition to the expected trigonal pyramidal coordination of antimony intermolecular interactions are observed for 1 (Sb … O: 363.3 pm) and 3 (Sb … S: 2 × 369.4 pm) but not for 2 . The reasons for these differences are discussed. 相似文献
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L. B. Serezhkina E. V. Peresypkina S. A. Novikov A. V. Virovets V. N. Serezhkin 《Russian Journal of Inorganic Chemistry》2013,58(1):19-25
(CN3H6)2[UO2CrO4(C5H3N(COO)2)] crystals (where CN3H6 is the guanidinium cation and C5H3N(COO)2 is the pyridine-2,6-dicarboxylate anion) have been synthesized and studied by X-ray diffraction and IR spectroscopy. The compound crystallizes in triclinic system with the unit cell parameters a = 7.4115(3) Å, b = 10.0365(7) Å, c = 12.1822(10) Å, α = 93.992(6)°, β = 97.749(7)°, γ = 96.907(6)°; space group $P\bar 1$ , Z = 2, R = 0.0721. The structure consists of [UO2CrO4(C5H3N(COO)2)] 2 4? , centrosymmetric dimers linked with the outer-sphere guanidinium ions by means of electrostatic interactions and hydrogen bonds. [UO2CrO4(C5H3N(COO)2)] 2 4? dimers belong to the AT001B2 crystallochemical group (A = UO 2 2+ , T001 = C5H3N(COO) 2 2? B2 = CrO 4 2? ) of uranyl complexes. Using molecular Voronoi-Dirichlet polyhedra, we have established that, in addition to hydrogen bonds, the π-π stacking interaction also produces some effect on the packing of uranyl-containing complexes in the studied structure. 相似文献
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Crystal Structure of N,N′-Bis(trimethylsilyl)-imidazoliumiodide [(Me3Si)2(C3H3N2)]+I? Me3SiI forms with N-Trimethylsiylimidazole (NTMSI) a 1:1 compound which is stable at room temperature. Single crystals can be isolated from a solution of chloroform. The X-ray crystal structure investigation proves an ionic structure. 相似文献
16.
In the reaction of TAS-fluoride, (Me2N)3S+Me3SiF2-, with carbonyl sulfur difluoride imides RC(O)NSF2 (R = F, CF3), C-N bond, cleavage is observed, and TAS+RC(O)F2- and NSF are the final products. From TASF and RC(O)NS(CF3)F, the salts TAS+RC(O)NS(CF3)F2- (R = F (14), CF3 (15)), with psi-pentacoordinate sulfur centers in the anions, are formed. An X-ray structure investigation of 14 shows that the fluorine atoms occupy axial positions and CF3, NC(O)F, and the sulfur lone pair occupy equatorial positions of the trigonal bipyramid. The -C(O)F group lies in the equatorial plane with the CO bond synperiplanar to the SN bond. According to B3LYP calculations, this structure corresponds to a global minimum and the expected axial orientation of the -C(O)F group represents a transition state. Calculations for the unstable FC(O)NSF3- anion show a different geometry. The -C(O)F group deviates 40 degrees from axial orientation, and the equatorially bonded fluorine is, in contrast to the -CF3 group in 14, syn positioned. 相似文献
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Bhatt AI May I Volkovich VA Collison D Helliwell M Polovov IB Lewin RG 《Inorganic chemistry》2005,44(14):4934-4940
The reduction of selected lanthanide cations to the zerovalent state in the room-temperature ionic liquid [Me3N(n)Bu][TFSI] is reported (where TFSI = bistriflimide, [N(SO2CF3)2]-). The lanthanide cations were introduced to the melt as the TFSI hydrate complexes [Ln(TFSI)3(H2O)3] (where Ln = La(III), Sm(III) or Eu(III)). The lanthanum compound [La(TFSI)3(H2O)3] has been crystallographically characterized, revealing the first structurally characterized f-element TFSI complex. The lanthanide in all three complexes was shown to be reducible to the metallic state in [Me3N(n)Bu][TFSI]. For both the Eu and Sm complexes, reduction to the metallic state was achieved via divalent species, and there was an additional observation of the electrodeposition of Eu metal. 相似文献