Well‐Ordered Crystals of TaI 5 . The Formation of the Ternary Iodide CsTaI 6 | Zendy

Habermehl Katja | Zendy; Pantenburg Ingo | Zendy; Held Peter | Zendy; Meyer Gerd | Zendy

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Well‐Ordered Crystals of TaI 5 . The Formation of the Ternary Iodide CsTaI 6

Author(s) -

Habermehl Katja,

Pantenburg Ingo,

Held Peter,

Meyer Gerd

Publication year - 2008

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.200700530

Subject(s) - orthorhombic crystal system , monoclinic crystal system , crystallography , octahedron , ternary operation , iodide , crystal structure , tantalum , materials science , chemistry , inorganic chemistry , metallurgy , computer science , programming language

Well ordered single crystals of TaI 5 (orthorhombic, Pnma (no. 62), a = 1396.2(2), b = 2009.5(4), c = 660.7(1) pm, Z = 8, R 1 for 967 reflections with I 0 >2σ(I 0 ): 0.0381) were obtained from a reaction of the elements. The structure determination confirms Müller's prediction of 1978. Single crystals of CsTaI 6 (monoclinic, C 2/ c (no. 15), a = 1362.3(2), b = 709.9(1), c = 1736.2(3) pm, β = 128.77(1)°, Z = 4, R 1 for 1140 reflections with I 0 >2σ(I 0 ): 0.0378) were obtained by the oxidation of tantalum with CsI 3 . Both crystal structures contain [TaI 6 ] octahedra which are edge‐connected to Ta 2 I 10 dimers in TaI 5 and isolated as [TaI 6 ] − anions in the salt Cs[TaI 6 ] (CsWCl 6 type of structure).

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