{"@context":"http://iiif.io/api/presentation/2/context.json","@type":"sc:Manifest","@id":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/manifest","label":"Structures of ( ± ) trans 4-(23-Dimethoxyphenyl)- (I) a","metadata":[{"label":"Title","value":"Structures of ( ± )-trans-4-(2,3-Dimethoxyphenyl)- (I) and ( + )-trans-4-(4-Methylphenyl)-2-hydroxy-2-methyl-3,4-dihydro-2H,5H-pyrano(3,2-c]-[l]benzopyran-5-one (II)"},{"label":"Collection","value":["Chemistry Faculty Publications"]},{"label":"Relation","value":"chm"},{"label":"Author","value":"Gerard Ruggiero, Oliver Platt, Edward J. Valente, Drake S. Egglestone"},{"label":"Journal Title","value":"Acta Crystallographica Section C"},{"label":"Abstract","value":"Derivatives of 2-methyl-3,4-dihydro-2H-5H-pyrano[3,2-c][1]benzopyran-5-one. (I) Racemic trans-2-hydroxy-4-(2,3-dimethoxyphenyl), C21H20O6, Mr = 368·40, monoclinic, C2/c, a = 19·403 (7), b = 10·636 (8), c = 21·456 (13) Å, β = 123·94 (5)°, V = 3673·8 (85) Å3, Z = 8, Dx = 1·33 g cm-3, λ(Mo Kɑ) = 0·71078 Å, μ = 0·913 cm-1, F(000) = 1552, T = 295 K, final R = 0·056 for 2463 observations [I ≥ 2δ(I)]. Molecules are hydrogen bonded between hydroxyls and coumarin carbonyls, O···O 2·812 (3) Å. The dihydropyran ring is in the d,e-diplanar conformation. (II) Resolved (2R,4R)-( + )-trans-2-hydroxy-4-(4-methylphenyl), C20H18O4, Mr = 322·36, orthorhombic, P212121, a = 10·578 (4), b = 10·450 (5), c = 14·803 (7) Å, V = 1636·4 (22) Å3, Z = 4, Dx= 1·31 g cm-3, λ(Mo Kα) = 0·71078 Å, μ = 0·540 cm-1, F(000) = 680, T = 294 K, final R = 0·044 for 1580 observations [I ≥ 3 δ(I)]. Molecules are hydrogen bonded along a screw axis between hydroxyls and coumarin carbonyls, O···O 2·746 (3) Å. The dihydropyran ring is a nearly undistorted half-chair."},{"label":"Volume","value":"45"},{"label":"Issue","value":"11"},{"label":"Publication Date","value":"D:00 M:11 Y:1989"},{"label":"Publication Information","value":"Copyright 1989 International Union of Crystallography. The original published version of this article may be found here."}],"description":"Structures of ( ± )-trans-4-(2,3-Dimethoxyphenyl)- (I) and ( + )-trans-4-(4-Methylphenyl)-2-hydroxy-2-methyl-3,4-dihydro-2H,5H-pyrano(3,2-c]-[l]benzopyran-5-one (II)","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_1","@type":"sc:Canvas","label":"Structures of ( ± ) trans 4-(23-Dimethoxyphenyl)- (I) a-2","height":1490,"width":1102,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/c9f61fb6-cdaa-4e43-a827-a8f554713c23/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://iiif.quartexcollections.com/portland/iiif/c9f61fb6-cdaa-4e43-a827-a8f554713c23","profile":"http://iiif.io/api/image/2/level2.json","tiles":[{"width":512,"scaleFactors":[1,2,4]}]},"height":1490,"width":1102},"on":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_1","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/c9f61fb6-cdaa-4e43-a827-a8f554713c23/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_2","@type":"sc:Canvas","label":"Structures of ( ± ) trans 4-(23-Dimethoxyphenyl)- (I) a-3","height":1490,"width":1081,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/41c2648b-b7f2-4317-83be-c5f9cb0f82bd/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://iiif.quartexcollections.com/portland/iiif/41c2648b-b7f2-4317-83be-c5f9cb0f82bd","profile":"http://iiif.io/api/image/2/level2.json"},"height":1490,"width":1081},"on":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_2","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/41c2648b-b7f2-4317-83be-c5f9cb0f82bd/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_3","@type":"sc:Canvas","label":"Structures of ( ± ) trans 4-(23-Dimethoxyphenyl)- (I) a-4","height":1478,"width":1116,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/8badf5e1-c4fb-4707-abd1-69468026da7b/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://iiif.quartexcollections.com/portland/iiif/8badf5e1-c4fb-4707-abd1-69468026da7b","profile":"http://iiif.io/api/image/2/level2.json"},"height":1478,"width":1116},"on":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_3","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/8badf5e1-c4fb-4707-abd1-69468026da7b/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_4","@type":"sc:Canvas","label":"Structures of ( ± ) trans 4-(23-Dimethoxyphenyl)- (I) a-5","height":1455,"width":1052,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/8f3df872-5147-48c2-a62a-2a8e5b9a4ed7/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://iiif.quartexcollections.com/portland/iiif/8f3df872-5147-48c2-a62a-2a8e5b9a4ed7","profile":"http://iiif.io/api/image/2/level2.json"},"height":1455,"width":1052},"on":"https://iiif.quartexcollections.com/portland/iiif/9f38cf87-33d6-4a62-8233-2d7838097f42/canvas/_4","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/8f3df872-5147-48c2-a62a-2a8e5b9a4ed7/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}}]}],"thumbnail":"https://iiif.quartexcollections.com/portland/iiif/c9f61fb6-cdaa-4e43-a827-a8f554713c23/full/300,300/0/default.jpg","logo":"https://iiif.quartexcollections.com/portland/iiif/logo"}