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Die Kristallstruktur von Trikobalt(II)-dihydroxidsulfat-dihydrat, Co3(OH)2(SO4)2 · 2 H2O

✍ Scribed by E. Dubler; H. R. Oswald

Publisher
John Wiley and Sons
Year
1971
Tongue
German
Weight
591 KB
Volume
54
Category
Article
ISSN
0018-019X

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✦ Synopsis

  1. Die Kristallstruktur von Trikobalt( 11)-dihydroxidsulfat-dihydrat, Co,(OH)z(SO'l), . 2 H2O von E. Dublerl) und H. R. Oswald Anorganisch-chemisches Institut, Universitat Zurich (25. VI. 71) Summary. Tricobalt(II)-dihydroxidesulfate-dihydrate,Co3(OH),( SO,), .2 H,O,is orthorhombic:

a = 7.21, b = 9.77, c = 12.86 A, V = 905.9 A3, space group Dii-Pbcm with four formula units per cell. The atomic positions have been determined by threedimensional Patterson and Fouriev synthesis and full-matrix least-squares refinement of single crystal X-ray diffraction data. Thc structure shows infinite chains [OOl] of Co-0 octahedra sharing one edge with each other. These chains arc linked together by alternating SO, tetrahedra and additional Co-0 octahedra, thus giving rise t o a three-dimensional network of polyhedra. There is no similarity t o the well known layer structures of most hydroxide salts of divalent metals. The SO, tetrahedra are regular while the Co-0 octahedra show considerable distortion. The water molecule is coordinated t o one Co atom and boncled t o sulfate oxygen by two wcak hydrogen bridges.

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Infrarotspektroskopische und thermoanaly
Infrarotspektroskopische und thermoanalytische Untersuchung von Trikobalt(II)-dihydroxidsulfat-dihydrat, Co3(OH)2(SO4)2 · 2H2O
✍ E. Dubler; H. R. Oswald 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 German ⚖ 699 KB

The infrared spectra between 600 and 4000 cm-1 of Co,(OH),(SO,),~ 2H,O, Co,(OH),(SO,),, and Co,(OD),(S04),.2D,0 are reported and discussed. The spectra are mainly examined in relation to the binding state of the water molecules. The results are in good agreement with the previously described crystal