7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione

Bibliographic Details
Main Author: Pereira Silva, P. S.
Publication Date: 2010
Other Authors: Parveen, Mehtab, Ali, Akhtar, Malla, Ali Mohammed, Silva, M. Ramos
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10316/109983
https://doi.org/10.1107/S160053681005244X
Summary: The title compound, C(20)H(16)O(6), which contains one chiral centre, crystallizes as a racemate. The mean planes of the two coumarin units make a dihedral angle of 88.07 (2)°. The pyrone ring containing the chiral centre adopts a sofa conformation. In the crystal, four mol-ecules are linked by O-H⋯O hydrogen bonds, forming a tetrameric ring with graph-set motif R(4) (4)(32). These tetramers are further linked by O-H⋯O hydrogen bonds into a three-dimensional network.
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network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
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spelling 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dionesingle-crystal X-ray studyT = 293 K; mean (C–C) = 0.002 A°R factor = 0.040wR factor = 0.109data-to-parameter ratio = 18.6The title compound, C(20)H(16)O(6), which contains one chiral centre, crystallizes as a racemate. The mean planes of the two coumarin units make a dihedral angle of 88.07 (2)°. The pyrone ring containing the chiral centre adopts a sofa conformation. In the crystal, four mol-ecules are linked by O-H⋯O hydrogen bonds, forming a tetrameric ring with graph-set motif R(4) (4)(32). These tetramers are further linked by O-H⋯O hydrogen bonds into a three-dimensional network.International Union of Crystallography2010-12-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/109983http://hdl.handle.net/10316/109983https://doi.org/10.1107/S160053681005244Xeng1600-5368Pereira Silva, P. S.Parveen, MehtabAli, AkhtarMalla, Ali MohammedSilva, M. Ramosinfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2023-11-10T09:19:44Zoai:estudogeral.uc.pt:10316/109983Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T06:01:39.106706Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
title 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
spellingShingle 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
Pereira Silva, P. S.
single-crystal X-ray study
T = 293 K; mean (C–C) = 0.002 A°
R factor = 0.040
wR factor = 0.109
data-to-parameter ratio = 18.6
title_short 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
title_full 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
title_fullStr 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
title_full_unstemmed 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
title_sort 7,7'-Dihy-droxy-4,4'-dimethyl-3,4-dihydro-2H,2'H-4,6'-bichromene-2,2'-dione
author Pereira Silva, P. S.
author_facet Pereira Silva, P. S.
Parveen, Mehtab
Ali, Akhtar
Malla, Ali Mohammed
Silva, M. Ramos
author_role author
author2 Parveen, Mehtab
Ali, Akhtar
Malla, Ali Mohammed
Silva, M. Ramos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Pereira Silva, P. S.
Parveen, Mehtab
Ali, Akhtar
Malla, Ali Mohammed
Silva, M. Ramos
dc.subject.por.fl_str_mv single-crystal X-ray study
T = 293 K; mean (C–C) = 0.002 A°
R factor = 0.040
wR factor = 0.109
data-to-parameter ratio = 18.6
topic single-crystal X-ray study
T = 293 K; mean (C–C) = 0.002 A°
R factor = 0.040
wR factor = 0.109
data-to-parameter ratio = 18.6
description The title compound, C(20)H(16)O(6), which contains one chiral centre, crystallizes as a racemate. The mean planes of the two coumarin units make a dihedral angle of 88.07 (2)°. The pyrone ring containing the chiral centre adopts a sofa conformation. In the crystal, four mol-ecules are linked by O-H⋯O hydrogen bonds, forming a tetrameric ring with graph-set motif R(4) (4)(32). These tetramers are further linked by O-H⋯O hydrogen bonds into a three-dimensional network.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-18
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/109983
http://hdl.handle.net/10316/109983
https://doi.org/10.1107/S160053681005244X
url http://hdl.handle.net/10316/109983
https://doi.org/10.1107/S160053681005244X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1600-5368
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv International Union of Crystallography
publisher.none.fl_str_mv International Union of Crystallography
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833602552713707520

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