0000000000382833

AUTHOR

Roberto Centore

showing 2 related works from this author

Crystal structure of a new spiro-polytetrahydrofuran compound with translational pseudosymmetry: rac-(2S,2′S,5′R)-2-methyl-5′-[(1R,2R,5S,5′R)-1,4,4,5…

2017

The title compound, C22H34O6, is a product of oxidation of squalene with the catalytic system RuO4(cat.)/NaIO4. The asymmetric unit contains two crystallographically independent molecules of very similar geometry approximately related by the non-crystallographic translation vector c/2. As a consequence, the average diffracted intensity in the hkl layers with odd l is systematically lower than in the layers with even l. In one molecule, the lactone ring and part of the adjacent tetrahydrofuran ring are disordered over two orientations with refined occupancy ratio of 0.831 (10):0.169 (10). The crystal structure is mainly governed by van der Waals forces.

lcsh:Chemistrycrystal structurelcsh:QD1-999pseudosymmetrypoly-THF compoundsspiro-compoundspseudotranslationActa Crystallographica Section E: Crystallographic Communications
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Crystal structure of an epoxysterol: 9α,11α-epoxy-5α-cholest-7-ene-3β,5,6α-triol 3,6-diacetate

2017

The title compound is a polyoxygenated ep­oxy steroid that crystallizes in the P212121 space group.

chemistry.chemical_classificationcrystal structurehydrogen bondCrystallography010405 organic chemistryHydrogen bondGeneral ChemistryCrystal structure010402 general chemistryCondensed Matter PhysicsRing (chemistry)01 natural sciencesResearch Communications0104 chemical sciencesCrystalCrystallographychemistry.chemical_compoundchemistryQD901-999MoleculeGeneral Materials ScienceTriolEne reactionAlkylsteroidsActa Crystallographica Section E Crystallographic Communications
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