at Google ScholarTitle data
Massa, Werner ; Agarwal, Seema ; Grabe, Norman ; Dehnicke, Kurt:
The Reaction of mer-[ScCl₃(H₂O)₃] with Pyridine : Crystal Structure of
[Sc₂Cl₄(μ-OH)₂(Py)₄]·4Py.
In: Zeitschrift für anorganische und allgemeine Chemie.
Vol. 635
(2009)
Issue 12
.
- pp. 1910-1914.
ISSN 1521-3749
DOI: https://doi.org/10.1002/zaac.200900332
Abstract in another language
mer-ScCl3(H2O)3 (1) was prepared from aqueous solutions of scandium trichloride by evaporation and subsequent treatment with thionyl chloride at room temperature. The IR spectrum of 1 is in accordance with the meridional arrangement of the chlorido and aqua ligands. Its reaction with excess pyridine yields Sc2Cl4(μ-OH)2(py)4·4py (2·4py), which is characterized by X-ray diffraction: Space group I2/a, Z = 8, lattice dimensions at 193(2) K: a = 2051.3(2), b = 1056.3(7), c = 4389.4(5) pm, β = 102.967(12)°, R1 = 0.0584. The molecular structure of 2 consists of distorted octahedrally coordinated scandium atoms, which are connected by μ-OH groups to form planar Sc2O2 four-membered rings. The coordination of the scandium atoms is completed by two chlorine ligands and by the nitrogen atoms of the pyridine molecules, the latter being in trans-positions to one another., Experiments to use 2 as possible catalyst for ring-opening polymerization of ϵ-caprolactone (ROP) without co-catalysts were not successful.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | Scandium; X-ray diffraction; IR spectroscopy; Heterocycles; Coordination modes |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 540 Chemistry |
| Date Deposited: | 08 Apr 2015 08:59 |
| Last Modified: | 05 Apr 2023 13:42 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/9890 |