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The Reaction of mer­[ScCl3(H2O)3] with Pyridine. Crystal Structure of [Sc2Cl4(μ­OH)2(Py)4]·4Py

Title data

Massa, Werner ; Agarwal, Seema ; Grabe, Norman ; Dehnicke, Kurt:
The Reaction of mer­[ScCl3(H2O)3] with Pyridine. Crystal Structure of [Sc2Cl4(μ­OH)2(Py)4]·4Py.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 635 (2009) Issue 12 . - pp. 1910-1914.
ISSN 0044-2313
DOI: https://doi.org/10.1002/zaac.200900332

Official URL: Volltext

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: 08 Apr 2015 08:59
URI: https://eref.uni-bayreuth.de/id/eprint/9890