3-Methylbenzo[1,2-c:5,4-c′]dichromen-6(8H)-one
2014 ◽
Vol 70
(8)
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pp. o838-o838
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The title compound, C21H14O3, crystallizes with eight independent molecules (A–H) in the asymmetric unit which are arranged in four groups of two molecules each (AB,CD,EFandGH). In each molecule, the pyran-2-one ring is planar (r.m.s. deviations vary from 0.001 to 0.017 Å), while the pyran ring has a screw-boat conformation. In the crystal, molecules stack in two columns, along the [10-1] direction, composed of moleculesC,B,EandG, andD,A,FandH. MoleculesAandFare linkedviaC—H...O hydrogen bonds. In addition, there are a number of C—H...π contacts present involving all of the molecules. These interactions result in the formation of a three-dimensional network.
2014 ◽
Vol 70
(3)
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pp. o279-o280
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2015 ◽
Vol 71
(1)
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pp. o43-o44
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Keyword(s):
2017 ◽
Vol 73
(9)
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pp. 1312-1315
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2014 ◽
Vol 70
(7)
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pp. o818-o818
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2014 ◽
Vol 70
(9)
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pp. o993-o994
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Keyword(s):
2012 ◽
Vol 68
(6)
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pp. o1651-o1652
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Keyword(s):
2012 ◽
Vol 68
(8)
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pp. o2546-o2546
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2014 ◽
Vol 70
(3)
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pp. o258-o258
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2007 ◽
Vol 63
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pp. o4439-o4439