| | 1 | Author
| Jacek Zaleski | Requires cookie* | | | Title
| Crystal Structure and Phase Transitions of [C(NH2)3]3Sb2C l9 * 0.9 H 20 A dam Pietraszko  | | | | Abstract
| The room temperature structure of [C(NH2)3]3Sb2C l9 ■ 0.9 H 20 (GNCA) was solved. It crystal lizes in the monoclinic C2/c space group with a = 15.275, b = 8.794, c = 17.904 (in Ä), ß = 96.40°, V = 2390 Ä 3, Z = 4. Refinement of the atomic parameters by a least squares methods gave R = 0.042, wR = 0.039 for 1958 reflections with F>4ct(F). The structure consists of polyanionic (Sb2Cl|_)n layers built of deformed corner connected SbX^-octahedra. Two crystallographically inequivalent guanidinium cations are present, one situated between polyanionic layers, the other one together with a disordered water molecule inside cavities formed by polyanions. Temperature X-ray scattering experiments together with DSC studies were carried out above room temperature. Temperature dependence of the lattice parameters between 300 K and 380 K was determined and a phase transition of mixed order at 364 K was revealed. | | | |
Reference
| Z. Naturforsch. 49a, 895—901 (1994); received June 7 1994 | | | |
Published
| 1994 | | | |
Keywords
| Guanidinium, Chloroantimonate, Crystal structure, Phase transition, DSC | | | |
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| default:Reihe_A/49/ZNA-1994-49a-0895.pdf | | | | Identifier
| ZNA-1994-49a-0895 | | | | Volume
| 49 | |
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