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Open AccessArticle10.1107/s160053680901109x

(1<i>R</i>,2<i>R</i>)-<i>N</i>,<i>N</i>′-Diisobutyl-<i>N</i>,<i>N</i>′-dimethylcyclohexane-1,2-diamine

P.K. Eckert,Viktoria H. Gessner,Carsten Strohmann-2009-04-02-Acta Crystallographica Section E Structure Reports Online

TL;DRAbstract

The title compound, C(16)H(34)N(2), is a chiral diamine with fixed R configuration at both stereogenic carbon centres of the cyclo-hexane backbone. Due to their different substituents, the two N atoms also become stereogenic. In the crystal structure, the configuration at one of the two nitro-gen centres is fixed, with the free electron pair pointing inward and the isobutyl group in a trans position towards the cyclo-hexane backbone resulting in an R configuration. The isobutyl group at the second N atom, however, is disordered with 75% S configuration and 25% R configuration. In both cases, the isobutyl group is arranged in a trans position towards the cyclo-hexane backbone.

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The title compound, C(16)H(34)N(2), is a chiral diamine with fixed R configuration at both stereogenic carbon centres of the cyclo-hexane backbone. Due to their different substituents, the two N atoms also become stereogenic. In the crystal structure, the configuration at one of the two nitro-gen centres is fixed, with the free electron pair pointing inward and the isobutyl group in a trans position towards the cyclo-hexane backbone resulting in an R configuration. The isobutyl group at the second N atom, however, is disordered with 75% S configuration and 25% R configuration. In both cases, the isobutyl group is arranged in a trans position towards the cyclo-hexane backbone.

Keywords

StereocenterChemistryHexaneDiamineNitroStereochemistryCarbon atomAbsolute configuration

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