{"@context":"http://iiif.io/api/presentation/2/context.json","@type":"sc:Manifest","@id":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/manifest","label":"Structures of (±) trans-4-(3-Nitrophenyl)- (I) and (+)--","metadata":[{"label":"Title","value":"Structures of (±)-trans-4-(3-Nitrophenyl)- (I) and (+)-trans-4-(4-Fluorophenyl)-2-hydroxy-2-methyl-3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran-5-one (II)"},{"label":"Collection","value":["Chemistry Faculty Publications"]},{"label":"Relation","value":"chm"},{"label":"Author","value":"Van Henry Savell, 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-(3-nitrophenyl), C19H15NO6, Mr = 353·33, triclinic, PĪ, a = 12·468 (1), b = 14·531 (3), c = 9·218 (2) Å, α = 99·00 (2), β = 98·03 (1), γ = 84·35 (1)°, V = 1628·3 (7) Å3, Z = 4, Dx= 1·441 g cm-3, λ (Cu Kα) = 1·54184 Å, μ = 8·679 cm-1, F(000) = 736, T = 294 K, final R = 0·042 for 4981 observations [I ≥ 3δ(I)]. The asymmetric unit contains two enantiomeric molecules [(2R,4R) and (2S,4S)] unrelated by crystallographic symmetry, and differing slightly in conformation. Hydrogen bonding occurs between a donor hydroxyl on one enantiomer (A) and a receptor carbonyl oxygen on another (B), O···O = 2·752 (2) Å, and between a donor hydroxyl (B) and a receptor hydroxyl (A), O···O = 2·923 (2) Å. Dihydropyran rings adopt half-chair conformations distorted toward the d,e-diplanar conformation. (II) Resolved (2R,4R)-( + )-trans-2-hydroxy-4-(4-fluorophenyl), C19H15FO4, Mr = 326·32, orthorhombic, P212121, a = 9·838 (4), b = 10·817(3), c = 14·777 (6) Å, V = 1572·6 (17) Å3, Z = 4, Dx = 1·374 g cm-3, λ (Cu Kα) = 1·54184 Å, μ = 8·351 cm-1, F(000) = 680, T = 294 K, final R = 0·040 for all 1583 observations. Hydroxyls are hydrogen bonded intermolecularly to carhonyl groups, O···O = 2·745 (3) Å. The embedded dihydropyran ring adopts a half-chair conformation."},{"label":"DOI","value":"10.1107/S0108270189003859"},{"label":"Volume","value":"45"},{"label":"Issue","value":"12"},{"label":"Publication Date","value":"D:00 M:12 Y:1989"},{"label":"Publication Information","value":"Copyright 1989 International Union of Crystallography. The original published version of this article may be found at http://dx.doi.org/10.1107/S0108270189003859."}],"description":"Structures of (±)-trans-4-(3-Nitrophenyl)- (I) and (+)-trans-4-(4-Fluorophenyl)-2-hydroxy-2-methyl-3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran-5-one (II)","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_1","@type":"sc:Canvas","label":"Structures of (±) trans-4-(3-Nitrophenyl)- (I) and (+)---2","height":1479,"width":1077,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/e7c15626-c450-4751-8066-1c775798cec8/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/e7c15626-c450-4751-8066-1c775798cec8","profile":"http://iiif.io/api/image/2/level2.json","tiles":[{"width":512,"scaleFactors":[1,2,4]}]},"height":1479,"width":1077},"on":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_1","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/e7c15626-c450-4751-8066-1c775798cec8/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_2","@type":"sc:Canvas","label":"Structures of (±) trans-4-(3-Nitrophenyl)- (I) and (+)---3","height":1453,"width":1066,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/0c90453d-f7e8-437d-9b65-745e2e7b304d/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/0c90453d-f7e8-437d-9b65-745e2e7b304d","profile":"http://iiif.io/api/image/2/level2.json"},"height":1453,"width":1066},"on":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_2","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/0c90453d-f7e8-437d-9b65-745e2e7b304d/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_3","@type":"sc:Canvas","label":"Structures of (±) trans-4-(3-Nitrophenyl)- (I) and (+)---4","height":1472,"width":1073,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/00cc43e9-a97e-4a8a-a12d-ab4025c72b77/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/00cc43e9-a97e-4a8a-a12d-ab4025c72b77","profile":"http://iiif.io/api/image/2/level2.json"},"height":1472,"width":1073},"on":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_3","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/00cc43e9-a97e-4a8a-a12d-ab4025c72b77/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}},{"@id":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_4","@type":"sc:Canvas","label":"Structures of (±) trans-4-(3-Nitrophenyl)- (I) and (+)---5","height":1467,"width":1048,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://iiif.quartexcollections.com/portland/iiif/4e04127d-bdef-4f44-b146-ddaf54e63005/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/4e04127d-bdef-4f44-b146-ddaf54e63005","profile":"http://iiif.io/api/image/2/level2.json"},"height":1467,"width":1048},"on":"https://iiif.quartexcollections.com/portland/iiif/873579ce-364a-4e40-b747-2a578121b618/canvas/_4","metadata":[]}],"thumbnail":{"@id":"https://iiif.quartexcollections.com/portland/iiif/4e04127d-bdef-4f44-b146-ddaf54e63005/full/500,500/0/default.jpg","@type":"dctypes:Image","height":500,"width":500}}]}],"thumbnail":"https://iiif.quartexcollections.com/portland/iiif/e7c15626-c450-4751-8066-1c775798cec8/full/300,300/0/default.jpg","logo":"https://iiif.quartexcollections.com/portland/iiif/logo"}