Bridging Nonaselenium Ring in [Se9(IrBr3)2], and Three Modifications of the 
Mononuclear Complex [IrBr3(SeBr2)3]

Stolze, Karoline; Ruck, Michael

doi:10.1002/zaac.201500588

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Bridging Nonaselenium Ring in [Se₉(IrBr₃)₂], and Three Modifications of the Mononuclear Complex [IrBr₃(SeBr₂)₃]

MPS-Authors

/persons/resource/persons126823

Ruck, Michael
Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

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. doi:10.1002/zaac.201500588.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-F0CB-0

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 (1) over bar, with a = 789.4(1) pm, b = 830.4(1) pm, c = 1334.4(1) pm, alpha = 81.634(5)degrees, beta = 84.948(5)degrees, gamma = 67.616(4)degrees; m-fac-IrBr3(SeBr2)(3), space group P2(1)/n, with a = 1205.3(1) pm, b = 962.4(1) pm, c = 1383.9(1) pm, beta = 91.114(3)degrees; mer-IrBr3(SeBr2)(3), space group P2(1)/n with a = 859.7(1) pm, b = 1284.3(1) pm, c = 1437.5(1) pm, beta = 94.427(3)degrees. A lower bromine content in the starting composition resulted in shiny, deep-red crystals of [Se-9(IrBr3)(2)]. X-ray diffraction on a single-crystal revealed a tetragonal lattice (space group I4(1)/a) with a = 1245.4(1) pm and c = 2486.8(1) pm at 296(1) K. In the [Se-9(IrBr3)(2)] complex, a crown-shaped uncharged Se-9 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.