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(1E,4E)-1-(2-Nitro-phen-yl)-5-(2,6,6-trimethyl-cyclo-hex-1-en-1-yl)penta-1,4-dien-3-one. 2012

Peng Zou, and Yi-Jun Jin, and Liu-Fang Xiang, and Dong-Ping Sun, and Shu-Lin Yang
Institute of Biotechnology, Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, People's Republic of China.

In the title curcumin-ionone derivative, C(20)H(23)NO(3), the dihedral angle between the cyclo-hexene and benzene rings is 21.03 (8)°, with both double bonds in the inter-linking olefinic chain adopting E conformations. Two of the methyl-ene groups of the β-ionone ring are disordered over two sets of sites with occupancy ratios of 0.50:0.50 and 0.60:0.40. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds into zigzag chains extending along the b axis.

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