Synthesis, crystal structure, spectroscopic and thermal properties of [Et4N][Ta6Br12(H2O)6]Br4×4H2O (Et=ethyl)-A new compound with the paramagnetic [Ta6Br12]3+ cluster core
- Autor(en)
- Gerald Giester, Berislav Peric, Nevenka Brnicevic, Pavica Planinic, Drazan Jozic
- Abstrakt
A new hexanuclear cluster compd., [Et 4N][Ta6Br12(H2O)6]Br44H2O (Et=ethyl) (1), with the paramagnetic [Ta6Br12]3+ cluster entity, was synthesized and characterized by elemental and TG/DTA analyses, IR and UV/Vis spectroscopy and by a single-crystal X-ray diffraction study. The presence of the paramagnetic [Ta6Br12]3+ unit was confirmed also by the room-temp. magnetic and EPR measurements. The compd. crystallizes in the tetragonal I41/a space group, with a=14.299(5), c=21.241(5) .ANG., Z=4, R 1(F)/wR 2(F 2)=0.0296/0.0811. The structure contains discrete [Ta6Br12(H2O)6]3+ cations with an octahedron of metal atoms edge-bridged by bromine atoms and with water mols. occupying all six terminal positions. The cluster units are positioned in the vertices of the three-dimensional (pseudo)diamond lattice. The structure shows similarities with literature reported structures of cluster compds. crystg. in the diamond ( Fd 3 m ) space group.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- Rudjer Boskovic Institute
- Journal
- Journal of Solid State Chemistry
- Band
- 182
- Seiten
- 2443-2450
- Anzahl der Seiten
- 8
- ISSN
- 0022-4596
- Publikationsdatum
- 2009
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105113 Kristallographie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/1753af9d-d674-4e40-8f7a-3c8a428887ce