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dc.contributor.authorKiran Kumar, Haruvegowda
dc.contributor.authorYathirajan, Hemmige S.
dc.contributor.authorSagar, Belakavadi K.
dc.contributor.authorForo, Sabine
dc.contributor.authorGlidewell, Christopher
dc.date.accessioned2019-08-13T14:30:08Z
dc.date.available2019-08-13T14:30:08Z
dc.date.issued2019-08
dc.identifier.citationKiran Kumar , H , Yathirajan , H S , Sagar , B K , Foro , S & Glidewell , C 2019 , ' Six 1-aroyl-4-(4-methoxyphenyl)piperazines : similar molecular structures but different patterns of supramolecular assembly ' Acta Crystallographica Section E , vol. 75 , no. 8 , pp. 1253-1260 . https://doi.org/10.1107/S2056989019010491en
dc.identifier.issn2056-9890
dc.identifier.otherPURE: 260559609
dc.identifier.otherPURE UUID: 1b256ebf-eb57-4d22-88a2-94dcfc31dc8f
dc.identifier.otherBibtex: urn:1aecfbf4b82b3b7e975a9c39cb838c4c
dc.identifier.urihttp://hdl.handle.net/10023/18308
dc.descriptionHSY thanks the University Grants Commission, New Delhi, for the award of a BSR Faculty Fellowship for three years.en
dc.description.abstractSix new 1-aroyl-4-(4-meth­oxy­phen­yl)piperazines have been prepared, using coupling reactions between benzoic acids and N-(4-meth­oxy­phen­yl)piperazine. There are no significant hydrogen bonds in the structure of 1-benzoyl-4-(4-meth­oxy­phen­yl)piperazine, C18H20N2O2, (I). The mol­ecules of 1-(2-fluoro­benzo­yl)-4-(4-meth­oxy­phen­yl)piperazine, C18H19FN2O2, (II), are linked by two C—H⋯O hydrogen bonds to form chains of rings, which are linked into sheets by an aromatic π–π stacking inter­action. 1-(2-Chloro­benzo­yl)-4-(4-meth­oxy­phen­yl)piperazine, C18H19ClN2O2, (III), 1-(2-bromo­benzo­yl)-4-(4-meth­oxy­phen­yl)piperazine, C18H19BrN2O2, (IV), and 1-(2-iodo­benzo­yl)-4-(4-meth­oxyphen­yl)piperazine, C18H19IN2O2, (V), are isomorphous, but in (III) the aroyl ring is disordered over two sets of atomic sites having occupancies of 0.942 (2) and 0.058 (2). In each of (III)–(V), a combination of two C—H⋯π(arene) hydrogen bonds links the mol­ecules into sheets. A single O—H⋯O hydrogen bond links the mol­ecules of 1-(2-hy­droxy­benzo­yl)-4-(4-meth­oxy­phen­yl)piperazine, C18H20N2O3, (VI), into simple chains. Comparisons are made with the structures of some related compounds.
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofActa Crystallographica Section Een
dc.rightsCopyright © 2019 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.en
dc.subjectPiperazinesen
dc.subjectCrystal structureen
dc.subjectIsomorphism problemen
dc.subjectDisorderen
dc.subjectHydrogen bondingen
dc.subjectSupramolecular assemblyen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleSix 1-aroyl-4-(4-methoxyphenyl)piperazines : similar molecular structures but different patterns of supramolecular assemblyen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.identifier.doihttps://doi.org/10.1107/S2056989019010491
dc.description.statusPeer revieweden


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