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  • 1
    Electronic Resource
    Electronic Resource
    4,4′-Bipyridylium di-μ-chlorotetrachlorodicuprate(II): a redetermination (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. m78-m79 
    Details
    ISSN: 1600-5368
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The structure of the title compound, (C10H10N2)[Cu2Cl6], previously determined by Bukowska-Strzyzewska & Tosik [Pol. J. Chem. (1979), 53, 2423–2428], has been reinvestigated. Our structure determination is of a significantly higher precision and, in contrast to the previous investigation, H atoms could be clearly found. Thus, it can be shown that the chains of alternating bipyridylium cations and Cu2Cl62− anions are stabilized by bifurcated hydrogen bonds. The cation and anion both lie on inversion centres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S1600536801001283
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  • 2
    Electronic Resource
    Electronic Resource
    Tris{bis[N-(2-aminoethyl)-1,2-ethanediamine-κ3N]nickel(II)} bis(tetrathioantimonate) (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 26-27 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Yellow crystals of [Ni(deta)2]3[SbS4]2 (deta is diethylenetriamine, C4H13N3) were synthesized under solvothermal conditions by reacting elemental Ni, Sb and S in a solution of diethylenetriamine. The structure is composed of tetrahedral [SbS4]3− anions in general positions and octahedral [Ni(deta)2]2+ cations located at centres of inversion. In the crystal structure, the anions and cations are stacked in the direction of the a axis in a pseudo-hexagonal arrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100014359
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  • 3
    Electronic Resource
    Electronic Resource
    catena-Poly[[(acetonitrile-N)dichlorocopper(II)]-μ-2,5-dimethylpyrazine-κ2N:N′] (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1388-1390 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the structure of the title compound, [CuCl2(C2H3N)(C6H8N2)], each Cu2+ cation is surrounded by two 2,5-dimethylpyrazine ligands, one acetonitrile ligand and two Cl− anions within a distorted tetragonal pyramid. The acetonitrile ligand, which forms the apex of the pyramid, the Cu2+ cation and the Cl− anions are all located in general positions, whereas each of the 2,5-dimethylpyrazine ligands is located about a centre of inversion. The 2,5-dimethylpyrazine ligands connect the Cu2+ cations via μ-N:N′ coordination to form chains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101015384
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  • 4
    Electronic Resource
    Electronic Resource
    Poly[copper(II)-μ-pyrazine-μ3-squarato] (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 260-261 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the structure of the title compound, [Cu(C4O4)(C4H4N2)]n, each copper cation is surrounded by three squarate (3,4-dihydroxy-3-cyclobutene-1,2-dioate) anions and two pyrazine ligands, all of which are located in special positions. The copper cation and all atoms of the squarate anion are located on a mirror plane, whereas the pyrazine ligand is located around a mirror plane which is perpendicular to the ring plane. The cations are connected via the squarate anions and the pyrazine ligands, forming sheets parallel to (001).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100018722
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  • 5
    Electronic Resource
    Electronic Resource
    4,4′-Bipyridine dihydrate at 130 K (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 111-112 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The 4,4′-bipyridine molecules in the title compound, C10H8N2·2H2O, are stacked in the direction of the crystallographic b axis. These stacks are connected via O—H...N and O—H...O hydrogen bonds to form sheets which lie parallel to (100). Chains of O—H...O hydrogen-bonded water molecules are located between the bipyridine stacks. Altogether, four crystallographically independent water molecules and two crystallographically independent bipyridine molecules are involved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100014888
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  • 6
    Electronic Resource
    Electronic Resource
    RbCu2VS4 (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 333-334 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The reaction of Cu and V in a Rb2S5 melt yields black crystals of rubidium dicopper vanadium tetrasulfide, RbCu2VS4. The structure is comprised of [Cu2VS4]− layers within the (010) plane which are separated by Rb+ cations. The layers consist of a network of edge- and corner-sharing [VS4] and [CuS4] tetrahedra parallel to (010). The optical band gap was determined as 1.45 eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100019442
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  • 7
    Electronic Resource
    Electronic Resource
    Poly[[aquacopper(I)-μ-bromo]-μ-(5-methylpyrazine-2-carboxylato)-κ3N4:O,N1-[diaquacopper(II)]-μ-(5-methylpyrazine-2-carboxylato)-κ3O,N1:N4-[aquacopper(I)-μ-bromo]] (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1395-1397 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the structure of the title compound, [Cu3Br2(C6H5N2O2)2(H2O)4], both copper(I) and copper(II) cations are present. The copper(II) cations are located on centres of inversion and are coordinated by two N atoms and two carboxylate O atoms from two symmetry-related 5-methylpyrazine-2-carboxylate anions, with two water molecules completing a distorted octahedron. The copper(I) cations are coordinated by the second N atom of the 5-methylpyrazine-2-carboxylate anion, one water molecule and two bromide anions within a distorted tetrahedron. Each of the bromide anions connects two symmetry-equivalent copper(I) cations to form zigzag-like CuBr chains. These chains are connected by the [diaquabis(5-methylpyrazine-2-carboxylato)]copper(II) complexes, forming corrugated sheets parallel to (100). The CuBr chains and the sheets are connected via O—H...O and O—H...Br hydrogen bonding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101016250
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  • 8
    Electronic Resource
    Electronic Resource
    Cs6Ta4S22 (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e368-e369 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The reaction of Cs2S3, Ta and S yields single crystals of the new caesium tantalum chalcogenide hexacaesium tetratantalum docosasulfide, Cs6Ta4S22, which is isotypic with Rb6Ta4S22 and the niobium compounds A6Nb4S22 (A = Rb, Cs). The structure consists of discrete [Ta4S22]6− anions and Cs+ cations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100010829
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  • 9
    Electronic Resource
    Electronic Resource
    Poly[copper(I)-μ-bromo-μ-2,3-dimethylpyrazine-N:N′] (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 377-378 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the structure of the title compound, [CuBr(C6H8N2)]n, each Cu2+ cation is surrounded by two 2,3-dimethylpyrazine ligands and two Br− anions in a distorted tetrahedral arrangement. The Cu2+ cations and Br− anions form (Cu2Br2)2 rhomboid dimers located around a centre of inversion. The 2,3-dimethylpyrazine ligands connect the Cu2+ cations in the dimers into sheets parallel to (010).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101000051
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  • 10
    Electronic Resource
    Electronic Resource
    Solvothermal Synthesis, Crystal Structure Determination, and Properties of the Thioantimonate [Ph4P]2[Sb6S10] (2000)
    Springer
    Monatshefte für Chemie 131 (2000), S. 721-726 
    Details
    ISSN: 1434-4475
    Keywords: Keywords. Thioantimonates(III); Solvothermal synthesis; Single crystal structure ; Physical properties.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary.  The reaction of elemental antimony with elemental sulfur and [Ph4P]Br in an aqueous solution of neopentanediamine under solvothermal conditions yields yellow needles of the new thioantimonate(III) [Ph4P]2[Sb6S10]. The structure consists of [Ph4P]+ cations and infinite one-dimensional anionic (Sb6S10 2−)n chains running along the crystallographic a axis. The chains are composed of 10-membered Sb5S5 rings with alternating Sb and S atoms and separated by the tetraphenylphosphonium cations. Upon heating the compound decomposes in two distinct steps, starting at about 100°C. The final product was identified by X-ray powder diffractometry as Sb2S3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007060070072
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