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Crystal structure of bis-(3-bromo-mesit-yl)(quino-lin-1-ium-8-yl)boron(III) tribromide.

Son J, Tamang SR, Hoefelmeyer JD - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The mol-ecule was prepared on combination of 3:1 Br2 and dimesit-yl(quinolin-8-yl)borane in hexa-nes.The refinement of the structure indicated a degree of 'over-bromination' (beyond two bromine atoms) for the cation.There are two tribromide ions in the asymmetric unit, both completed by crystallographic inversion symmetry.

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Affiliation: Department of Chemistry, University of South Dakota, 414 E. Clark St, Vermillion, SD 57069, USA.

ABSTRACT
The title compound, C27H26.82BBr2.18N(+)·Br3 (-), is a cationic tri-aryl-borane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromo-mesityl groups. The mol-ecule was prepared on combination of 3:1 Br2 and dimesit-yl(quinolin-8-yl)borane in hexa-nes. The refinement of the structure indicated a degree of 'over-bromination' (beyond two bromine atoms) for the cation. There are two tribromide ions in the asymmetric unit, both completed by crystallographic inversion symmetry.

No MeSH data available.


Packing diagram of bis­(3-bromo­mesit­yl)(quinolin-1-ium-8-yl)boron(III) tribromide in the crystal (C: gray, H: white, B: green, N: blue, Br: brown)
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fig2: Packing diagram of bis­(3-bromo­mesit­yl)(quinolin-1-ium-8-yl)boron(III) tribromide in the crystal (C: gray, H: white, B: green, N: blue, Br: brown)

Mentions: The cations are arranged in rows that propagate along the a-axis direction wherein each cation is in the same orientation due to translation along the row. Inversion centers are located on the dimesitylboryl side of the row, just beyond the brominated mesityl groups, and the packing of the cations in the crystal results in inter­digitated parallel quinolinium rings; these symmetrically sandwich a tribromide anion, such that the central atom of the anion is located at an inversion center. A packing diagram is shown in Fig. 2 ▸.


Crystal structure of bis-(3-bromo-mesit-yl)(quino-lin-1-ium-8-yl)boron(III) tribromide.

Son J, Tamang SR, Hoefelmeyer JD - Acta Crystallogr E Crystallogr Commun (2015)

Packing diagram of bis­(3-bromo­mesit­yl)(quinolin-1-ium-8-yl)boron(III) tribromide in the crystal (C: gray, H: white, B: green, N: blue, Br: brown)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555423&req=5

fig2: Packing diagram of bis­(3-bromo­mesit­yl)(quinolin-1-ium-8-yl)boron(III) tribromide in the crystal (C: gray, H: white, B: green, N: blue, Br: brown)
Mentions: The cations are arranged in rows that propagate along the a-axis direction wherein each cation is in the same orientation due to translation along the row. Inversion centers are located on the dimesitylboryl side of the row, just beyond the brominated mesityl groups, and the packing of the cations in the crystal results in inter­digitated parallel quinolinium rings; these symmetrically sandwich a tribromide anion, such that the central atom of the anion is located at an inversion center. A packing diagram is shown in Fig. 2 ▸.

Bottom Line: The mol-ecule was prepared on combination of 3:1 Br2 and dimesit-yl(quinolin-8-yl)borane in hexa-nes.The refinement of the structure indicated a degree of 'over-bromination' (beyond two bromine atoms) for the cation.There are two tribromide ions in the asymmetric unit, both completed by crystallographic inversion symmetry.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, University of South Dakota, 414 E. Clark St, Vermillion, SD 57069, USA.

ABSTRACT
The title compound, C27H26.82BBr2.18N(+)·Br3 (-), is a cationic tri-aryl-borane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromo-mesityl groups. The mol-ecule was prepared on combination of 3:1 Br2 and dimesit-yl(quinolin-8-yl)borane in hexa-nes. The refinement of the structure indicated a degree of 'over-bromination' (beyond two bromine atoms) for the cation. There are two tribromide ions in the asymmetric unit, both completed by crystallographic inversion symmetry.

No MeSH data available.