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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.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 .
dc.identifier.otherPURE: 260559609
dc.identifier.otherPURE UUID: 1b256ebf-eb57-4d22-88a2-94dcfc31dc8f
dc.identifier.otherBibtex: urn:1aecfbf4b82b3b7e975a9c39cb838c4c
dc.identifier.otherScopus: 85071452199
dc.identifier.otherWOS: 000480512800033
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.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.subjectCrystal structureen
dc.subjectIsomorphism problemen
dc.subjectHydrogen bondingen
dc.subjectSupramolecular assemblyen
dc.subjectQD Chemistryen
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.description.statusPeer revieweden

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