Affiliation:
1. Department für Chemie, Universität zu Köln, Greinstraße 6, 50939 Köln, Germany
Abstract
A facile route to single crystals of Nb3Br8 by the reaction of NbBr5 with the wall of the niobium reaction vessel at 800 °C is reported. The crystal structure (a = 707.87(5), c = 3895.7(6) pm, R3̄m, Z = 6) was determined from diffractometer data; the crystal data are compared with those obtained from film data in 1966 which were of already high precision. Triangular {Nb3} clusters with Nb-Nb distances of 288.6(2) pm are surrounded by 13 bromide ligands which bridge them to double layers, {Nb3}(μ3-Br4)i
1/1(μ2- Br1)i
(3/2)・2(μ1-Br2)a-a
6/2(μ1-Br3)a-a-a
3/3 that are stacked to a 12R structure.
Cited by
7 articles.
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