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(1E,4E)-1,5-Bis(2,4,5-trimethoxy-phen-yl)penta-1,4-dien-3-one.

ABSTRACT: There are three mol-ecules in the asymmetric unit of the title compound, C(23)H(26)O(7), in which the dihedral angles between two benzene rings are 4.34?(9), 18.11?(8) and 8.54?(8)°. The central penta-1,4-dien-3-one fragment makes dihedral angles of 3.95?(9) and 3.32?(16)° with the two adjacent benzene rings in one mol-ecule, whereas the corresponding pairs of angles in the other two mol-ecules are 10.34?(9)/17.46?(8)° and 7.87?(8)/13.33?(8)°. In the crystal, mol-ecules are linked by inter-molecular C-H?O and C-H?? weak inter-actions into a three-dimensional network. Finally, ?-? inter-actions [centroid?centroid distances = 3.5984?(10) and 3.5545?(10)?Å] are observed.

SUBMITTER: Fun HK 

PROVIDER: S-EPMC2979664 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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(1E,4E)-1,5-Bis(2,4,5-trimethoxy-phen-yl)penta-1,4-dien-3-one.

Fun Hoong-Kun HK   Ruanwas Pumsak P   Chantrapromma Suchada S  

Acta crystallographica. Section E, Structure reports online 20100109 Pt 2

There are three mol-ecules in the asymmetric unit of the title compound, C(23)H(26)O(7), in which the dihedral angles between two benzene rings are 4.34 (9), 18.11 (8) and 8.54 (8)°. The central penta-1,4-dien-3-one fragment makes dihedral angles of 3.95 (9) and 3.32 (16)° with the two adjacent benzene rings in one mol-ecule, whereas the corresponding pairs of angles in the other two mol-ecules are 10.34 (9)/17.46 (8)° and 7.87 (8)/13.33 (8)°. In the crystal, mol-ecules are linked by inter-molec  ...[more]

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