7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin

In the crystal structure, the title compound, C(24)H(22)O(8), lies on a twofold rotation axis and the asymmetric unit comprises one half-mol­ecule. The dihedral angle formed by the coumarin unit with the symmetry-related part is 74.78 (14)°. One of the meth­oxy groups attached to the coumarin unit i...

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Autores principales: Fun, Hoong-Kun, Jebas, Samuel Robinson, Parveen, Mehtab, Khanam, Zakia, Ghalib, Raza Murad
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969639/
https://www.ncbi.nlm.nih.gov/pubmed/21583154
http://dx.doi.org/10.1107/S1600536809017334
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author Fun, Hoong-Kun
Jebas, Samuel Robinson
Parveen, Mehtab
Khanam, Zakia
Ghalib, Raza Murad
author_facet Fun, Hoong-Kun
Jebas, Samuel Robinson
Parveen, Mehtab
Khanam, Zakia
Ghalib, Raza Murad
author_sort Fun, Hoong-Kun
collection PubMed
description In the crystal structure, the title compound, C(24)H(22)O(8), lies on a twofold rotation axis and the asymmetric unit comprises one half-mol­ecule. The dihedral angle formed by the coumarin unit with the symmetry-related part is 74.78 (14)°. One of the meth­oxy groups attached to the coumarin unit is considerably twisted, making an angle of 87.17 (17)° with respect to the coumarin unit; the other is twisted by 0.66 (19)°. No classical hydrogen bonds are found in the sturcture; only a weak C—H⋯π inter­action and short intra­molecular O⋯O contacts [2.683 (2)–2.701 (2) Å] are observed.
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spelling pubmed-29696392010-12-30 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin Fun, Hoong-Kun Jebas, Samuel Robinson Parveen, Mehtab Khanam, Zakia Ghalib, Raza Murad Acta Crystallogr Sect E Struct Rep Online Organic Papers In the crystal structure, the title compound, C(24)H(22)O(8), lies on a twofold rotation axis and the asymmetric unit comprises one half-mol­ecule. The dihedral angle formed by the coumarin unit with the symmetry-related part is 74.78 (14)°. One of the meth­oxy groups attached to the coumarin unit is considerably twisted, making an angle of 87.17 (17)° with respect to the coumarin unit; the other is twisted by 0.66 (19)°. No classical hydrogen bonds are found in the sturcture; only a weak C—H⋯π inter­action and short intra­molecular O⋯O contacts [2.683 (2)–2.701 (2) Å] are observed. International Union of Crystallography 2009-05-14 /pmc/articles/PMC2969639/ /pubmed/21583154 http://dx.doi.org/10.1107/S1600536809017334 Text en © Fun 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
Fun, Hoong-Kun
Jebas, Samuel Robinson
Parveen, Mehtab
Khanam, Zakia
Ghalib, Raza Murad
7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title_full 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title_fullStr 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title_full_unstemmed 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title_short 7,7′,8,8′-Tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
title_sort 7,7′,8,8′-tetra­meth­oxy-4,4′-dimethyl-3,3′-bicoumarin
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969639/
https://www.ncbi.nlm.nih.gov/pubmed/21583154
http://dx.doi.org/10.1107/S1600536809017334
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