Affiliation:
1. Universiteit van die Vrystaat
Abstract
’n Reeks halogeengesubstitueerde feniel-β-enaminoketonaat verbindings (N,Oskenkeratome) word voorgelê. Die invloed van halogeensubstitusie aan die fenielring op vastetoestand parameters is ondersoek. X-straal strukture van 4-(4-fluorofenielamino) pent-3-en-2-oon (4-F-PhonyH), 4-(4-chlorofenielamino)pent-3-en-2-oon (4-Cl-PhonyH), en 4-(4-bromofeniel-amino)pent-3-en-2-oon (4-Br-PhonyH) is gerapporteer. Alhoewel 4-F-PhonyH en die chloro- en bromo-eweknieë struktureel soortgelyk is, is daar daadwerklike verskille in terme van dihedriese hoeke en intermolekulêre interaksies. Al drie verbindinge vertoon polimorfisme in twee verskillende kristalstelsels, met 4-F-PhonyH wat in P21/c, beide 4-Cl-PhonyH en 4-Br-PhonyH in Cc, en al drie in P1̅ kristalliseer.
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