caa a22 4500 463184378 CHVBK 20180406164848.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10870-007-9259-9 doi (NATIONALLICENCE)springer-10.1007/s10870-007-9259-9 Co-crystallised α- and β-Anomers of 2,3,4,6-Tetra-acetyl- d -glucopyranose, in which the α- and β-Anomers are Randomly Distributed in the Hydrogen-bonded Chains of Molecules [Elektronische Daten] [Thomas Baddeley, William Harrison, R. Howie, Janet Skakle, James Wardell] A co-crystallised sample of α- and β-2,3,4,6-tetra-O-acetyl-d-glucopyranose [α:β=1:2.86(8)], (α,β-1), has been isolated from a solution of 2,3,4,6-tetra-O-acetyl-d-glucopyranose in moist ethyl acetate/diethyl ether. In contrast, pure β-2,3,4,6-tetra-O-acetyl-d-glucopyranose, (β-1) was isolated on crystallisation from diethyl ethyl/petroleum ether. Species (α,β-1) is a solid solution in which approximately one in four of the molecules in the β-form is randomly substituted by a molecule of the α-anomer. The hydrogen bonded zig-zag chain connectivity of the pure β-anomer is maintained in the solid solution along the b direction. Since the parent d-glucopyranose compounds differ in their molecular packing and, therefore in structure, the solid solution phenonmenon in the case of their tetraacetyl derivatives is unexpected. Compound (β-1) and the (α,β-1) solid solution crystallize in the orthorhombic space group P212121: a=7.8612(4)Å, b=10.2045(5)Å, c=20.7362(11)Å, and Z=4 for (β-1) at 120(2)K; and a=7.9674(5)Å, b=10.2547(4)Å, c=21.1565(10)Å, and Z=4 for (α,β-1) at 291(2)K. Index Abstract: Co-crystallised α- and β-Anomers of 2,3,4,6-Tetra-acetyl-d-glucopyranose, in which the α- and β-Anomers are Randomly Distributed in the Hydrogen-bonded Chains of Molecules Thomas C. Baddeley, William T. A. Harrison, R. Alan Howie, Janet M. S. Skakle and James L. Wardell α- and β-2,3,4,6-Tetra-O-acetyl-d-glucopyranose can form a crystalline solid solution in which a molecule of the β-form is randomly substituted by a molecule of the α-anomer Co-crystallised α- and β-Anomers of 2,3,4,6-Tetra-acetyl-d-glucopyranose, in which the α- and β-anomers are Randomly Distributed in the Hydrogen-bonded Chains of Molecules Thomas C. Baddeley, (1) William T. A Harrison, (1) R. Alan Howie, (1) Janet M. S. Skakle (1) and James L. Wardell (1,2)* (1) Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen, AB24 3UE, Scotland. Springer Science+Business Media, LLC, 2007 Co-crystallised anomers nationallicence Solid solution nationallicence Glucopyranose derivatives nationallicence Baddeley Thomas Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut Harrison William Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut Howie R. Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut Skakle Janet Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut Wardell James Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut Journal of Chemical Crystallography Springer US; http://www.springer-ny.com 37/12(2007-12-01), 853-858 1074-1542 37:12<853 2007 37 10870 https://doi.org/10.1007/s10870-007-9259-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10870-007-9259-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baddeley Thomas Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut NATIONALLICENCE 700 1- Harrison William Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut NATIONALLICENCE 700 1- Howie R. Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut NATIONALLICENCE 700 1- Skakle Janet Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut NATIONALLICENCE 700 1- Wardell James Department of Chemistry, University of Aberdeen, Meston Walk, AB24 3UE, Old Aberdeen, Scotland aut NATIONALLICENCE 773 0- Journal of Chemical Crystallography Springer US; http://www.springer-ny.com 37/12(2007-12-01), 853-858 1074-1542 37:12<853 2007 37 10870 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer