Bridging Nonaselenium Ring in [Se9(IrBr3)2], and Three Modifications of the Mononuclear Complex [IrBr3(SeBr2)3]
Stolze K, Ruck M (2015)
Publication Type: Journal article
Publication year: 2015
Journal
Book Volume: 641
Pages Range: 2005-2008
Journal Issue: 11
DOI: 10.1002/zaac.201500588
Abstract
The reaction of iridium powder with an excess of selenium and SeBr4 yielded lustrous, vermillion crystals of the mononuclear iridium complex [IrBr3(SeBr2)3]. The transition metal is coordinated octahedrally by three SeBr2 and three bromide ligands with facial or meridional configuration. Three different modifications were obtained under similar conditions: a-fac-IrBr3(SeBr2)3, space group P\bar{1}, with a = 789.4(1) pm, b = 830.4(1) pm, c = 1334.4(1) pm, α = 81.634(5)°, β = 84.948(5)°, γ = 67.616(4)°; m-fac-IrBr3(SeBr2)3, space group P21/n, with a = 1205.3(1) pm, b = 962.4(1) pm, c = 1383.9(1) pm, β = 91.114(3)°; mer-IrBr3(SeBr2)3, space group P21/n with a = 859.7(1) pm, b = 1284.3(1) pm, c = 1437.5(1) pm, β = 94.427(3)°. A lower bromine content in the starting composition resulted in shiny, deep-red crystals of [Se9(IrBr3)2]. X-ray diffraction on a single-crystal revealed a tetragonal lattice (space group I41/a) with a = 1245.4(1) pm and c = 2486.8(1) pm at 296(1) K. In the [Se9(IrBr3)2] complex, a crown-shaped uncharged Se9 ring coordinates two iridium(III) cations as a bridging bis-tridentate ligand. Three terminal bromide ions complete the distorted octahedral coordination of each transition metal atom.
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How to cite
APA:
Stolze, K., & Ruck, M. (2015). Bridging Nonaselenium Ring in [Se9(IrBr3)2], and Three Modifications of the Mononuclear Complex [IrBr3(SeBr2)3]. Zeitschrift für Anorganische und Allgemeine Chemie, 641(11), 2005-2008. https://doi.org/10.1002/zaac.201500588
MLA:
Stolze, Karoline, and Michael Ruck. "Bridging Nonaselenium Ring in [Se9(IrBr3)2], and Three Modifications of the Mononuclear Complex [IrBr3(SeBr2)3]." Zeitschrift für Anorganische und Allgemeine Chemie 641.11 (2015): 2005-2008.
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