The crystal structure of K<sub>2</sub>{Cu[TeO<sub>4</sub>(OH)<sub>2</sub>]} · H<sub>2</sub>O

Zeitschrift fur Kristallographie - Crystalline Materials - Tập 205 Số 1 - Trang 41-53 - 1993
Effenberger, Tillmanns

Tóm tắt

Abstract K2{Cu[TeO4(OH)2]} · H2O was synthesized under moderate hydrothermal conditions. The structure was solved from single crystal X-ray data; a = 9.589(2), b = 6.235(1), c = 12.014(3) Å, β = 90.44(2)°, space group Cc, wR(F) = 0.038 for 2875 observed reflections with sin([unk]/λ < 0.90 Å−1. CuO4 squares and TeO4(OH)2 octahedra alternatingly share O–O edges to form chains in [110]. This part of the structure is pseudocentrosymmetric and shows in addition an approximate Cccm symmetry. The higher symmetry is violated by hydrogen bonds; refinements in C2/c or Cccm resulted in large anisotropic displacement parameters or split positions for K and Ow atoms. The {Cu[TeO4(OH)2]} chains are connected by potassium atoms and by hydrogen bonds of hydroxil groups (Oh…O = 2.643 and 2.650 Å) and water molecules (Ow…O = 2.782 and 2.955 Å), respectively.

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Tài liệu tham khảo

Amarilla, 1989, References Synthesis and characterization of the new mixed oxides GeTe Inorg Crystal structure of a new telluric acid adduct : OH Crystal structure of a new telluric acid adduct : OH CH NHCH Crystal chemistry of cyclo - hexaphosphates XVI, Chem Kristallogr Kristallogr, 2, 1701

Raman, 1964, The crystal structure of OH Crystal structure of KTeO OH Die Kristallstrukturen Cu - haltiger oxidischer Elpasolithe Neutronenbeugungsuntersuchungen an den Kristallpulvern Anorg Allg, Chem Chem, 04, 634

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Zeitschrift fur Kristallographie - Crystalline Materials

Tập 205 Số 1

41-53

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