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  • 2000-2004  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Rb4Zr3Te16, a one-dimensional zirconium telluride synthesized from molten salt (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 2-4 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new ternary metal telluride, tetrarubidium trizirconium hexadecatelluride, Rb4Zr3Te16, has been synthesized through reactions at 698 K using elemental Zr and an Rb2Te/Te melt as a reactive flux, and characterized by single-crystal X-ray diffraction. Although the structure of this compound is very similar to its Cs4Zr3Te16 analogue, the compounds crystallize in different space groups, the former in C2h6 –C2/c and the latter in C2h5 –P21/n. Both compounds consist of infinite one-dimensional chains of [Zr3Te16]n4n− separated from each other by Rb+ or Cs+ cations. Within the chain, each Zr atom is surrounded by eight Te atoms to give a distorted bicapped trigonal prism polyhedron. There are two unambiguous Te—Te single bonds of 2.758 (2) and 2.765 (2) Å, and four longer Te...Te interatomic distances in the range of 2.9277 (14)–3.0445 (18) Å that indicate weak interactions between the adjacent Te atoms. Because of the wide range of Te...Te interactions, simple formalisms cannot be used to describe the bonding within the chain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270199011956
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular building blocks for solid-state chalcogenides: solvothermal synthesis of [Mn(en)3]Te4 and [Fe(en)3]2(Sb2Se5) (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1100-1103 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Two new molecular metal chalcogenides, tris(ethylenediamine-N,N′)manganese(II) tetratelluride, [Mn(C2H8N2)3]Te4, (I), and bis[tris(ethylenediamine-N,N′)iron(II)] pentaselenodiantimonate(III), [Fe(C2H8N2)3]2(Sb2Se5), (II), containing the isolated molecular building blocks Te42− and Sb2Se54−, have been synthesized by solvothermal reactions in an ethylenediamine solution at 433 K. The anion Te42− in (I) is a zigzag oligometric chain with Te—Te bond lengths in the range 2.709–2.751 Å. There is a very short contact [3.329 (1) Å] between a pair of neighboring Te42− anions. In (II), each Sb atom is surrounded by three Se atoms to give a tripodal coordination. One of the three independent Se atoms is a μ2-bridging ligand between two Sb atoms; the other two are terminal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100006879
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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