{"@context":"http://iiif.io/api/presentation/2/context.json","@type":"sc:Manifest","@id":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/manifest","label":"A Structure Containing Diastereomers (2S4R) tr","metadata":[{"label":"Title","value":"A Structure Containing Diastereomers, (2S,4R)-trans- and (2R,4R)-cis-2-hydroxy-2, 4-dimethyl-3, 4-dihydro-2H, 5H-pyrano[3,2-c][1]benzopyran-5-one, C14 H14 O4"},{"label":"Collection","value":["Chemistry Faculty Publications"]},{"label":"Relation","value":"chm"},{"label":"Author","value":"Edward J. Valente, Verner Schomaker"},{"label":"Journal Title","value":"Acta Crystallographica Section C"},{"label":"Abstract","value":"Mr = 246·3, monoclinic, P21, a = 7·804 (3), b = 18·248 (8), c = 8·752 (5) Å, β = 99·59°, V = 1233 Å3, Z = 4 (2 molecules/asymmetric unit), Dx = 1·33 g cm-3, λ(Mo Kα) = 0·71067 Å, μ = 0·91 cm,-1, F(000) = 520, T = 293 K. Final R = 0·066 for 1123 observed independent intensities. The structure consists of diastereomers approximately inversionrelated through a pseudocenter of symmetry at x = 0·241 (4), z = 0·281 (3) except the 4-methyl groups. The dihydropyran rings are half chairs distorted towards the eƒ-diplanar conformation. Like molecules are hydrogen-bonded between hydroxyl and carbonyl groups along a, O···O distances being 2·781 (7) (trans) and 2· 780 (7) Å (cis)."},{"label":"DOI","value":"10.1107/S0108270184006818"},{"label":"Volume","value":"40"},{"label":"Issue","value":"6"},{"label":"Publication Date","value":"D:00 M:06 Y:1984"},{"label":"Publication Information","value":"Copyright 1984 International Union of Crystallography. The original published version of this article may be found at http://dx.doi.org/10.1107/S0108270184006818."}],"description":"A Structure Containing Diastereomers, (2S,4R)-trans- and (2R,4R)-cis-2-hydroxy-2, 4-dimethyl-3, 4-dihydro-2H, 5H-pyrano[3,2-c][1]benzopyran-5-one, C14 H14 O4","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_1","@type":"sc:Canvas","label":"A Structure Containing Diastereomers (2S4R) tr-2","height":1655,"width":1282,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/35e33248-af98-48a7-a1b8-5277b386c6b2/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/35e33248-af98-48a7-a1b8-5277b386c6b2","profile":"http://iiif.io/api/image/2/level2.json","tiles":[{"width":512,"scaleFactors":[1,2,4]}]},"height":1655,"width":1282},"on":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_1","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/35e33248-af98-48a7-a1b8-5277b386c6b2/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_2","@type":"sc:Canvas","label":"A Structure Containing Diastereomers (2S4R) tr-3","height":1655,"width":1282,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/c38e8c96-3bc4-44bd-a1a8-071dbbf0aa87/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/c38e8c96-3bc4-44bd-a1a8-071dbbf0aa87","profile":"http://iiif.io/api/image/2/level2.json"},"height":1655,"width":1282},"on":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_2","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/c38e8c96-3bc4-44bd-a1a8-071dbbf0aa87/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_3","@type":"sc:Canvas","label":"A Structure Containing Diastereomers (2S4R) tr-4","height":1651,"width":1275,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/eb3a074c-e435-4bde-9729-969aff9ce12d/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/eb3a074c-e435-4bde-9729-969aff9ce12d","profile":"http://iiif.io/api/image/2/level2.json"},"height":1651,"width":1275},"on":"https://iiif.quartexcollections.com/portland/iiif/a03146bd-2594-4f1e-b129-057b070a8884/canvas/_3","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/eb3a074c-e435-4bde-9729-969aff9ce12d/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}}]}],"thumbnail":"https://iiif.quartexcollections.com/portland/iiif/35e33248-af98-48a7-a1b8-5277b386c6b2/full/300,300/0/default.jpg","logo":"https://iiif.quartexcollections.com/portland/iiif/logo"}