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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8502
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dc.contributor.authorSubashini, A-
dc.contributor.authorRamamurthi, K-
dc.contributor.authorBabu, R R-
dc.contributor.authorPhilip, Reji-
dc.contributor.authorStoeckli-Evns, Helen-
dc.date.accessioned2025-08-28T04:39:07Z-
dc.date.available2025-08-28T04:39:07Z-
dc.date.issued2023-03-
dc.identifier.citationActa Crystallographica E, 2023, Vol.79, p146-150en_US
dc.identifier.issn2056-9890-
dc.identifier.urihttp://hdl.handle.net/2289/8502-
dc.descriptionRestricted Access.en_US
dc.description.abstractThe crystal structure of the title compound, C13H9Br2N [systematic name: (E)-N,1-bis­(4-bromo­phen­yl)methanimine], is a second polymorph (Form II) crystallizing in the ortho­rhom­bic space group Pccn. The first polymorph (Form I) crystallizes in the monoclinic space group P21/c [Bernstein & Izak (1975). J. Cryst. Mol. Struct.5, 257–266; Marin et al. (2013). J. Mol. Struct.1049, 377–385]. The mol­ecule is disordered about an inversion center situated in the middle of the C=N bond, similar to the situation in the monoclinic polymorph: the C=N bond length is 1.243 (7) Å. In the crystal, mol­ecules stack along the b-axis direction and are linked by C—H⋯π inter­actions. The inter­atomic contacts in the crystal for both polymorphs were studied by Hirshfeld surface analysis and have notable differences. The solid-state fluorescence spectrum of Form II shows an emission peak at ca 469 nm. The two-photon absorption coefficient measured from the open aperture Z-scan technique is 1.3 × 10 −11 m W−1, hence, Form II shows optical limiting behaviour.en_US
dc.language.isoenen_US
dc.publisherActa Crystallographica Een_US
dc.relation.urihttp://arxiv.org/abs/en_US
dc.relation.urihttps://doi.org/10.1107/S2056989023001111en_US
dc.rights2023 Subashini et al. Published with license by International Union of Crystallographyen_US
dc.subjectcrystal structureen_US
dc.subjectN-benzyl­ideneanilineen_US
dc.subjectpolymorphismen_US
dc.subjectHirshfeld surfaceen_US
dc.subjectfluorescenceen_US
dc.subjecttwo-photon absorptionen_US
dc.titleSynthesis, Crystal structure and Hirshfeld surface analysis of the orthorhombic polymorph of 4-bromo-N-(4-bromobenzylidene)anilineen_US
dc.typeArticleen_US
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