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Also reported herein are the Hirshfeld surface calculations for these compounds as well as those of (<jats:italic>E<\/jats:italic>)-2-(X-benzylidene)-1-tetralone (<jats:bold>1<\/jats:bold>: X=H; 4: X=4-MeO), whose structures were previously reported. The molecules are not planar as shown by the dihedral angles of 45.66(5)\u201369.78(5)\u00b0 between the phenyl groups and by the puckered cyclohexenyl rings. A common feature of the molecular conformations is the C\u2013H\u00b7\u00b7\u00b7O1(carbonyl) intramolecular hydrogen bond. The carbonyl oxygen atom plays significant roles in the interactions in all compounds baring compound <jats:bold>8<\/jats:bold>. However, there is no consistent set of intermolecular interaction in this group of compounds. Intermolecular interactions present in each compound are some of the O\u2013H\u00b7\u00b7\u00b7O, C\u2013H\u00b7\u00b7\u00b7A (A=O, N or \u03c0), A\u2013O\u00b7\u00b7\u00b7\u03c0 (A=C or N) and \u03c0\u00b7\u00b7\u00b7\u03c0 interactions. The only compound exhibiting a classical O\u2013H\u00b7\u00b7\u00b7O hydrogen bond is compound <jats:bold>5<\/jats:bold>. C\u2013H\u00b7\u00b7\u00b7\u03c0 interactions are found in all compounds, and while \u03c0\u00b7\u00b7\u00b7\u03c0 interactions are present in compounds <jats:bold>2<\/jats:bold>, <jats:bold>3<\/jats:bold>, <jats:bold>7<\/jats:bold> and <jats:bold>9<\/jats:bold>, no consistent type of stacking arrangement is shown. The Hirshfeld surface calculations, while generally concurring with the intermolecular interactions indicated by PLATON analyses, also reveal short interactions, which fall below the PLATON cut-off parameters.<\/jats:p>","DOI":"10.1515\/zkri-2017-2048","type":"journal-article","created":{"date-parts":[[2017,5,5]],"date-time":"2017-05-05T10:09:59Z","timestamp":1493978999000},"page":"697-718","source":"Crossref","is-referenced-by-count":2,"title":["Structural studies of (<i>E<\/i>)-2-(benzylidene)-1-tetralone derivatives: crystal structures and Hirshfeld surface analysis"],"prefix":"10.1515","volume":"232","author":[{"given":"Thomas C.","family":"Baddeley","sequence":"first","affiliation":[{"name":"Department of Chemistry , University of Aberdeen, Meston Walk , Old Aberdeen, AB24 3UE , UK"}]},{"given":"Ligia R.","family":"Gomes","sequence":"additional","affiliation":[{"name":"FP-ENAS-Faculdade de Ci\u00eancias de Sa\u00fade, Escola Superior de Sa\u00fade da UFP , Universidade Fernando Pessoa, Rua Carlos da Maia, 296 , P-4200-150 Porto , Portugal"},{"name":"REQUIMTE, Departamento de Qu\u00edmica e Bioqu\u00edmica , Faculdade de Ci\u00eancias da Universidade do Porto , Rua do Campo Alegre, 687, P-4169-007 , Porto , Portugal"}]},{"given":"John N.","family":"Low","sequence":"additional","affiliation":[{"name":"Department of Chemistry , University of Aberdeen, Meston Walk , Old Aberdeen, AB24 3UE , UK"}]},{"given":"Alan B.","family":"Turner","sequence":"additional","affiliation":[{"name":"Department of Chemistry , University of Aberdeen, Meston Walk , Old Aberdeen, AB24 3UE , UK"}]},{"given":"James L.","family":"Wardell","sequence":"additional","affiliation":[{"name":"Department of Chemistry , University of Aberdeen, Meston Walk , Old Aberdeen, AB24 3UE , UK"},{"name":"Instituto de Tecnologia em F\u00e1rmacos e Farmanguinhos, Funda\u00e7\u00e3o Oswaldo Cruz , 21041-250 Rio de Janeiro, RJ , Brazil"}]},{"given":"Graeme J. 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