{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:43:43Z","timestamp":1785422623259,"version":"3.56.0"},"reference-count":28,"publisher":"International Union of Crystallography (IUCr)","issue":"5","license":[{"start":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T00:00:00Z","timestamp":1775779200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T00:00:00Z","timestamp":1775779200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr E Cryst Commun","Acta Cryst E","Acta Cryst Sect E","Acta Crystallogr E","Acta Crystallogr Sect E","Acta Cryst E Cryst Commun","Acta Cryst Sect E Cryst Commun"],"accepted":{"date-parts":[[2026,3,31]]},"published-print":{"date-parts":[[2026,5,1]]},"abstract":"<jats:p>\n                    The title salt, C\n                    <jats:sub>7<\/jats:sub>\n                    H\n                    <jats:sub>10<\/jats:sub>\n                    N\n                    <jats:sup>+<\/jats:sup>\n                    \u00b7C\n                    <jats:sub>10<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    O\n                    <jats:sup>\u2212<\/jats:sup>\n                    , formed between 2-oxo-2\n                    <jats:italic>H<\/jats:italic>\n                    -chromene-3-carboxylic acid and benzylamine crystallizes in the triclinic space group\n                    <jats:italic>P<\/jats:italic>\n                    <jats:overline>1<\/jats:overline>\n                    . Proton transfer from 2-oxo-2\n                    <jats:italic>H<\/jats:italic>\n                    -chromene-3-carboxylic acid to the NH\n                    <jats:sub>2<\/jats:sub>\n                    group of benzylamine results in a N\u2014H...(O,O) hydrogen bond between cation and the carboxylate group of the anion. The 2-oxo-2\n                    <jats:italic>H<\/jats:italic>\n                    -chromene moiety is almost planar with a dihedral angle between the two fused rings of 1.48\u2005(11)\u00b0. The dihedral angle between the rings of the anion and cation is 29.49\u2005(10)\u00b0. In the crystal, N\u2014H...O hydrogen-bonding interactions generate an\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sub>4<\/jats:sub>\n                    <jats:sup>4<\/jats:sup>\n                    (12) synthon parallel to the\n                    <jats:italic>ac<\/jats:italic>\n                    plane. The molecules are linked by further C\u2014H...\u03c0 interactions, which consolidate the packing. In addition, \u03c0\u2013\u03c0 stacking interactions are observed with centroid-to-centroid distances of 3.5832\u2005(14) and 3.8167\u2005(15)\u2005\u00c5. The two-dimensional fingerprint plots indicates that the most important contributions to the crystal packing are from H...H (39.7%), H...O\/O...H (30.6%) and H...C\/C...H (20.9%) contacts. The antibacterial activity, with MIC values of 30\u2005\u00b5g ml\n                    <jats:sup>\u22121<\/jats:sup>\n                    against\n                    <jats:italic>S. aureus<\/jats:italic>\n                    and 25\u2005\u00b5g ml\n                    <jats:sup>\u22121<\/jats:sup>\n                    against\n                    <jats:italic>E. coli<\/jats:italic>\n                    . The lower MIC against\n                    <jats:italic>E. coli<\/jats:italic>\n                    suggests that the compound is more effective against Gram-negative bacteria than Gram-positive bacteria.\n                  <\/jats:p>","DOI":"10.1107\/s2056989026003403","type":"journal-article","created":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T08:05:25Z","timestamp":1775808325000},"page":"432-436","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis, crystal structure and Hirshfeld surface analysis of phenylmethanaminium 2-oxo-2\n                    <i>H<\/i>\n                    -chromene-3-carboxylate"],"prefix":"10.1107","volume":"82","author":[{"given":"M.","family":"Sunithakumari","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/012bxv356","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.U.","family":"Gagan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03tjsyq23","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.","family":"Dwarakanath","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03tjsyq23","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.T.","family":"Srinivasa","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01qdav448","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H. 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