1887

n Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie - Poli- en isomorfisme in halogeengesubstitueerde 4-(fenielamino)pent-3-en-2-oon verbindings - oorspronklike navorsing

Volume 38 Number 1
  • ISSN : 0254-3486
  • E-ISSN: 2222-4173

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 P1 kristalliseer.

Poli- and isomorphism in halogen-substituted 4-(phenylamino)pent-3-en-2-one compounds: A range of halogen-substituted phenyl β-enaminoketonato compounds (N,Odonor atoms) as ligand models is presented. The influence of halogen substitution on the phenyl ring on solid state parameters was investigated by X-ray structures of 4-(4-fluorophenylamino)pent-3-en-2-one (4-F-PhonyH), 4-(4-chlorophenylamino)pent-3- en-2-one (4-Cl-PhonyH), and 4-(4-bromophenyl-amino)pent-3-en-2-one (4-Br-PhonyH), which are reported. Although structurally very similar, 4-F-PhonyH and its chloro- and bromo-substituted counterparts differ significantly with regard to dihedral angles and intermolecular interactions. All three compounds show polymorphism in two different crystal systems, with 4-F-PhonyH crystallising in P21/c, both 4-Cl-PhonyH and 4-Br-PhonyH crystallising in Cc, and all three crystallising in P1.


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/content/journal/10520/EJC-1c95dda879
2020-04-22
2020-07-05

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