| Autor: |
A. Mousdis, G., Gionis, V., C. Papavassiliou, G., P. Raptopoulou, C., Terzis, A. |
| Zdroj: |
Journal of Materials Chemistry; October 1998, Vol. 8 Issue: 10 p2259-2262, 4p |
| Abstrakt: |
The preparation, crystal structures and optical absorption spectra of [CH3SC(&z.dbd;NH2)NH2 ]3PbI51, [CH3SC(&z.dbd;NH2)NH2 ]4Pb2Br82 and [CH3SC(&z.dbd;NH2)NH2 ]3PbCl5·CH3SC(&z.dbd;NH2)NH2Cl 3 are reported. Compounds 1 and 3 consist of deformed PbX6 octahedra, which share opposite corners to form quasi-zero-dimensional or one-dimensional infinite chains along the a-axis. Compound 2 consists of Pb2Br9 units which are connected with two neighbouring units by non-opposite Br atoms; in this way, infinite zigzag chains are formed. A blue shift of the excitonic absorption bands, in comparison to those of systems with higher dimensionality, is observed. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
