Synthese und Kristallstruktur von Bromotriphenylphosphoniumtribromid, [(C 6 H 5 ) 3 PBr]Br 3 / Synthesis and Crystal Structure of Bromotriphenylphosphonium Tribromide, [(C 6 H 5 ) 3 PBr]Br3
Bromotriphenylphosphonium tribromide, [(C 6 H 5 ) 3 PBr]Br 3 , has been prepared by the reaction of triphenylphosphine with bromine in dichloromethane. Light-brown crystals are obtained by recrystallization from the same solvent. The crystal and molecular structure of the title compound has been det...
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Veröffentlicht in: | Zeitschrift für Naturforschung. B, A journal of chemical sciences A journal of chemical sciences, 1993-03, Vol.48 (3), p.258-262 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Bromotriphenylphosphonium tribromide, [(C
6
H
5
)
3
PBr]Br
3
, has been prepared by the reaction of triphenylphosphine with bromine in dichloromethane. Light-brown crystals are obtained by recrystallization from the same solvent.
The crystal and molecular structure of the title compound has been determined. The crystals are monoclinic, space group P2
1
/c, Z = 8; a = 1917.1(8), b = 1182.2(9), c = 1823.5(4) pm, β = 108.34(2)°. R = 0.056 (R
w
= 0.063) for 1813 reflections with I ≥ 3σ(I). In the solid state the title compound exists as discrete monomeric (C
6
H
5
)
3
PBr+ and Br
3
⁻ ions with two crystallographically independent ions of each sort. The cations have a slightly irregular tetrahedral geometry around the P atom. The tribromide anions are nearly symmetrical and slightly bent. |
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ISSN: | 0932-0776 1865-7117 |
DOI: | 10.1515/znb-1993-0302 |