Bildung von Nitridokomplexen durch Ammonolyse von Metallhalogeniden mit NH4
+. Synthese und Struktur von (NH4)3Nb2NBr10, (NH4)3Ta2NI10 und (NH4)3W2NBr10 / Formation of Nitrido Complexes by Ammonolysis of Metal Halides with NH4
+. Synthesis and Structure of (NH4)3Nb2NBr10, (NH4)3Ta2NI10 and (NH4)3W2NBr10
Author:
Hörner Manfredo1,
Frank Klaus-Peter1,
Strähle Joachim1
Affiliation:
1. Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen 1
Abstract
The reaction of WCl6 or ReCl5 with NH4Cl in a sealed glas ampoule between 350 and 400 °C yields the hexachlorometallates(IV ) (NH4)2MCl6. MoCl5 forms (NH4)2MoC16 at 275 °C, whereas at 420 °C (NH4)3Mo2C19 is obtained. The salts (NH4)2MC16 crystallize in the K2PtCl6 type structure. NbBr5, WBr6 and Tal5 undergo ammonolysis reactions with NH4
+ forming the nitrido complexes M2NX10
3- with a symmetrical nitrido bridge M = N = M . The com plexes have the point symmetry D4h. (NH4)3Nb2NBr10 crystallizes in the tetragonal space group P4/mnc with a = 727.8, c = 1932.9 pm and Z = 2. For (NH4)3Ta2NI10 a partially disordered structure in the tetragonal space group I4/mmm was observed. The lattice constants are a - 162.5, c - 1990.2 pm, Z = 2. (NH4)3W2NBr10 was obtained in the form of an am orphous powder. The vibrational spectra of the nitrido com plexes are assigned and discussed
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Cited by
16 articles.
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1. (NH4)3Ta2NBr10 ordered;Landolt-Börnstein - Group III Condensed Matter;2012
2. (NH4)3Ta2NI10 rt;Structure Types. Part 10: Space Groups (140) I4/mcm – (136) P42/mnm;2011
3. By Ammonolysis;Inorganic Reactions and Methods;2007-05-29
4. Zwei Nitridchloride des Wolframs: W2NCl8 und W2NCl9;Zeitschrift für anorganische und allgemeine Chemie;2007-05
5. Synthese und Struktur von (PPh4)3[Re2NCl10];Zeitschrift f�r anorganische und allgemeine Chemie;2004-12