Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph

The title mol­ecule, C(21)H(18)O(8), crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314–o315]. The mol­ecules of both polymorphs differ by the conformation of the oxomethyl­acetate groups. The title mol­ecules are rather planar co...

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Autores principales: Nallasivam, Angannan, Nethaji, Munirathinam, Vembu, Nagarajan, Jaswant, Buckle, Sulochana, Nagarajan
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2968396/
https://www.ncbi.nlm.nih.gov/pubmed/21581920
http://dx.doi.org/10.1107/S1600536809001020
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author Nallasivam, Angannan
Nethaji, Munirathinam
Vembu, Nagarajan
Jaswant, Buckle
Sulochana, Nagarajan
author_facet Nallasivam, Angannan
Nethaji, Munirathinam
Vembu, Nagarajan
Jaswant, Buckle
Sulochana, Nagarajan
author_sort Nallasivam, Angannan
collection PubMed
description The title mol­ecule, C(21)H(18)O(8), crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314–o315]. The mol­ecules of both polymorphs differ by the conformation of the oxomethyl­acetate groups. The title mol­ecules are rather planar compared to the mol­ecules of the other polymorph. In the title mol­ecule, one of the oxomethyl­acetate groups is disordered (occupancies of 0.6058/0.3942). The structures of both polymorphs are stabilized by C—H⋯O and C—H⋯π inter­actions. Due to the planarity of the title mol­ecules and similar inter­molecular inter­actions, the title mol­ecules are more densely packed than those of the other polymorph.
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spelling pubmed-29683962010-12-30 Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph Nallasivam, Angannan Nethaji, Munirathinam Vembu, Nagarajan Jaswant, Buckle Sulochana, Nagarajan Acta Crystallogr Sect E Struct Rep Online Organic Papers The title mol­ecule, C(21)H(18)O(8), crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314–o315]. The mol­ecules of both polymorphs differ by the conformation of the oxomethyl­acetate groups. The title mol­ecules are rather planar compared to the mol­ecules of the other polymorph. In the title mol­ecule, one of the oxomethyl­acetate groups is disordered (occupancies of 0.6058/0.3942). The structures of both polymorphs are stabilized by C—H⋯O and C—H⋯π inter­actions. Due to the planarity of the title mol­ecules and similar inter­molecular inter­actions, the title mol­ecules are more densely packed than those of the other polymorph. International Union of Crystallography 2009-01-14 /pmc/articles/PMC2968396/ /pubmed/21581920 http://dx.doi.org/10.1107/S1600536809001020 Text en © Nallasivam et al. 2009 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Organic Papers
Nallasivam, Angannan
Nethaji, Munirathinam
Vembu, Nagarajan
Jaswant, Buckle
Sulochana, Nagarajan
Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title_full Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title_fullStr Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title_full_unstemmed Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title_short Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
title_sort dimethyl 2,2′-[(4-oxo-2-phenyl-4h-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2968396/
https://www.ncbi.nlm.nih.gov/pubmed/21581920
http://dx.doi.org/10.1107/S1600536809001020
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AT vembunagarajan dimethyl224oxo2phenyl4hchromene57diyldioxydiacetateamoredenselypackedpolymorph
AT jaswantbuckle dimethyl224oxo2phenyl4hchromene57diyldioxydiacetateamoredenselypackedpolymorph
AT sulochananagarajan dimethyl224oxo2phenyl4hchromene57diyldioxydiacetateamoredenselypackedpolymorph

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