The modulated structure of 4-hydroxyphenyl 6-O-[(3R)-3,4-dihydroxy-2-methylenebutanoyl]-β-D-glucopyranoside, C17H22O10
Abstract
The crystal structure of 4-hydroxyphenyl 6-O[(3-R)-3,4-dihydroxy-2-methylenebutanoyl]-β-D-glucopyranoside, C17H22O10, P21, a = 12.121(2) Å, b = 5.090(1) Å, c = 31.316(4) Å, β = 90.61(1)°, Z = 4, is a modulation of an idealised parent structure of orthorhombic P212121 symmetry and can be described as two pseudo symmetry related substructures of exact P1211 symmetry. Each substructure contains hydrogen-bonded layers perpendicular to c* and layers from separate substructures alternate along c. To a first approximation the layers of separate substructures are essentially geometrically identical, the modulation being dominantly a distortion of the unit cell and not the layers. A final value of R(F) = 0.062 was obtained for the 2397 independent reflections used in refinement, I(h) > 3σ(I(h)).
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Artikel in diesem Heft
- Al13Os4-type monoclinic phase and its orthorhombic variant in the Al–Co alloy system
- Connecting icosahedral and dodecagonal order
- A warning in indexing triclinic powder diffraction data
- A lithium molybdenum(V) monophosphate, Li3(MoO)2(PO4)3 structurally related to Li2Na(MoO)2(PO4)3
- Crystal structure of a cubic Al70Pd23Mn6Si; a 2/1 rational approximant of an icosahedral phase
- The crystal chemistry of doyleite, Al(OH)3
- Single crystal Mössbauer and neutron powder diffraction measurements on the synthetic clinopyroxene Li-acmite LiFeSi2O6
- New phases RCu5Sn (R=La, Ce, Pr, Nd, Sm, Gd) and Ce2Cu9Sn2.65
- The crystal structure of 2,3-dihydro-2,2,4-trimethyl-1H-1,5-benzodiazepinium perchlorate
- Structure of (E)-6,7,8,9-tetradeoxy-1,2:3,4-di-O-isopropylidene-7-nitro-α-D-galacto-non-6-eno-1,5-pyranose
- Crystal structure of guanidinium squarate dihydrate: C4O4 · 2C(NH2)3 · 2H2O
- Single crystal structure determination of cetylpyridiniumammonium bromide and Rietveld structure determination of cetylquinuclidinium bromide
- The modulated structure of 4-hydroxyphenyl 6-O-[(3R)-3,4-dihydroxy-2-methylenebutanoyl]-β-D-glucopyranoside, C17H22O10
