6,7-Bis(bromo-meth-yl)-2,11,18,21,24,27-hexa-oxatetra-cyclo-[26.4.0.0.0]dotriaconta-1(28),4,6,8,12(17),13,15,29,31-nona-ene dichloro-methane monosolvate.

Hyun Jin Beack,Jai Young Lee,Jae Eun Kim,Seung Mee Yoo,Wonbo Sim

doi:10.1107/s160053681200565x

Hyun Jin Beack, Jai Young Lee + Show 3 more

Open Access

https://doi.org/10.1107/s160053681200565x

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Abstract

The title 20-crown-6 unit, C28H30Br2O6·CH2Cl2, consisting of three benzo groups and triethylene glycol was prepared from the reaction of 1,2,4,5-tetrakis(bromomethyl)benzene and bisphenol in the presence of sodium hydride. In the crystal, one O atom of the central ethylene glycol in the triethylene glycol unit exhibits an exo conformation as a result of intramolecular C—H⋯O hydrogen bonds. The crown unit and the solvent molecule are linked by weak C—H⋯O hydrogen bonds.

Highlights

The title 20-crown-6 unit, C28H30Br2O6ÁCH2Cl2, consisting of three benzo groups and triethylene glycol was prepared from the reaction of 1,2,4,5-tetrakis(bromomethyl)benzene and bisphenol in the presence of sodium hydride
The crown unit and the solvent molecule are linked by weak C—HÁ Á ÁO hydrogen bonds
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)

Summary

Structure Reports Online

Key indicators: single-crystal X-ray study; T = 200 K; mean (C–C) = 0.011 A; R factor = 0.079; wR factor = 0.243; data-to-parameter ratio = 20.8. The title 20-crown-6 unit, C28H30Br2O6ÁCH2Cl2, consisting of three benzo groups and triethylene glycol was prepared from the reaction of 1,2,4,5-tetrakis(bromomethyl)benzene and bisphenol in the presence of sodium hydride. One O atom of the central ethylene glycol in the triethylene glycol unit exhibits an exo conformation as a result of intramolecular C—HÁ Á ÁO hydrogen bonds. The crown unit and the solvent molecule are linked by weak C—HÁ Á ÁO hydrogen bonds

Data collection

DÁ Á ÁA

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