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ISSN: 2414-3146

January 2022 issue

Highlighted illustration

Cover illustration: In β-D-galacto­pyranosyl-(1→4)–2-amino-2-de­oxy-α-D-gluco­pyran­ose hydro­chloride monohydrate (lactosamine), the amino­disaccharide adopts a conformation close to that of the parent α-lactose and is immersed in an extensive hydrogen-bonding network. See: Mossine, Kelley & Mawhinney [IUCrData (2021). 6, x220061].

inorganic compounds


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The Al61.49Mn11.35Ni4 phase was synthesized by high-temperature sinter­ing and its crystal structure has been re-determined.

metal-organic compounds


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A three-dimensional supermolecule based on 4-(1,2,4-triazol-1-yl)benzoic acid was prepared under solvothermal conditions. In the crystal, inter­molecular N—H⋯N hydrogen bonds between the amine function and the central N atom of the triazole ring lead to the formation of ribbons parallel to [1[\overline{1}]1].

organic compounds


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The title compound crystallizes as the mesomeric isomer, which helped establish that the 1,3 elimination of bromine by tri­phenyl­phosphine occurs with inversion of configuration at each chiral carbon atom.

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The amino­disaccharide adopts a conformation close to that of the parent α-lactose and is immersed in an extensive hydrogen-bonding network.

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The title compound features a polarized π-system due to resonance between the N—C(H)=C(H)—B and ionic N+=C(H)—C(H)=B canonical forms.
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