Home Physical Sciences Hydratisierte Cyanoelpasolithe: Die Kristallstrukturen von (NMe4)2Li(H2O)2[Cr(CN)6] und (NMe4)2Na(H2O)[M(CN)6] (M = Cr, Co) / Hydrated Cyano Elpasolites: The Crystal Structures of (NMe4)2Li(H2O)2[Cr(CN)6] and (NMe4)2Na(H2O)[M(CN)6] (M = Cr, Co)
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Hydratisierte Cyanoelpasolithe: Die Kristallstrukturen von (NMe4)2Li(H2O)2[Cr(CN)6] und (NMe4)2Na(H2O)[M(CN)6] (M = Cr, Co) / Hydrated Cyano Elpasolites: The Crystal Structures of (NMe4)2Li(H2O)2[Cr(CN)6] and (NMe4)2Na(H2O)[M(CN)6] (M = Cr, Co)

  • Martin Schwarten , Michael Witzei and Dietrich Babel
Published/Copyright: June 2, 2014
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The results of single crystal X-ray structure determinations are reported for monoclinic (NMe4)2Li(H2O)2[Cr(CN)6] (a = 1736.7(2), = 888.0(1), c = 1659.3(1) p m ,β = 119.33(1)°; C2/c, Z = 4) and orthorhombic (NMe4),Na(H2O)[Cr(CN)6] (a = 960.0(2), b = 885.0(2), c = 1269.8(3) pm; Pnmm, Z = 2) and (NMe4)2Na(H2O)[Co(CN)6] (a = 1854.5(4), b = 853.5(1), c = 1328.7(3) pm; Pnma, Z = 4), the latter exhibiting a superstructure of the NaCr compound. The average distances within the hexacyano groups are Cr-C: 207.8 resp. 208.3 pm and Co-C: 189.5 pm. The alkali ions are incorporated into the elpasolite-like arrangement of the bigger ions as di- or monohydrated species [Li(H2O)2]+ and [Na(H2O)]+ resp., becoming tetrahedrally coordinated [LiO2N2] and [NaON3] within the lattice and fixed by hydrogen bridges O-H...N as well. Some structural details and relations are discussed.



Received: 2000-3-22
Published Online: 2014-6-2
Published in Print: 2000-6-1

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