Pyridinium-Chlorometallate von Lanthanoid-Elementen. Die Kristallstrukturen von [HPy]2[LnCl5(Py)] mit Ln = Eu, Er, Yb und von [H(Py)2][YbCl4(Py)2] · Py

✍ Scribed by Jin-Shan Li; Bernhard Neumüller; Kurt Dehnicke

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: German
• Weight: 101 KB
• Volume: 628
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/1521-3749(200212)628:12<2785::aid-zaac2785>3.0.co;2-x

✦ Synopsis

Inhaltsübersicht. Die Pyridinium-Chlorometallate [HPy] 2 [Ln-Cl 5 (Py)] mit Ln ϭ Eu, Er und Yb, sowie [H(Py) 2 ][YbCl 4 (Py) 2 ]•Py bilden sich durch Einwirkung von Diacetonalkohol auf die Lösungen der entsprechenden Lanthanoidtrichloride in Pyridin bei 100 °C. Nach den Kristallstrukturanalysen sind in den Komplexen des Typs [HPy] 2 [LnCl 5 (Py)] die [LnCl 5 (Py)] 2Ϫ -Anionen über die H-Pyridinium Chlorometallates of Lanthanoid Elements. Crystal Structures of [HPy] 2 [LnCl 5 (Py)] with Ln ‫؍‬ Eu, Er, Yb and of [H(Py) 2 ][YbCl 4 (Py) 2 ] • Py Abstract. The pyridinium chlorometallates [HPy] 2 [LnCl 5 (Py)] with Ln ϭ Eu, Er and Yb, as well as [H(Py) 2 ][YbCl 4 (Py) 2 ]•Py have been obtained by the reaction of diacetone alcohol with solutions of the corresponding metal trichlorides in pyridine at 100 °C. According to the crystal structure determinations the anions [LnCl 5 (Py)] 2Ϫ are linked by bifurcated Cl•••H•••Cl bridges with the protons of the [HPy] ϩ cations forming chains along [001]. The anions of [H(Py) 2 ][YbCl 4 (Py) 2 ]•Py form discrete octahedrons with trans-positions of the pyridine ligands. [HPy] 2 [EuCl 5 (Py)] (1a): Space group Pnma, Z ϭ 4, lattice dimensions at Ϫ80 °C: a ϭ 1874.4(2), b ϭ 1490.2(2), c ϭ 741.5(1) pm, R 1 ϭ 0.0466.

1 Einleitung

In vorangegangenen Publikationen haben wir über die Reaktion von Diacetonalkohol (4-Hydroxy-4-Methyl-2