Acta Cryst. (2002). E58, o1031-o1033  [ doi:10.1107/S1600536802015040 ]

Tautomeric 6-oxoisocytidine (methanol solvate)

D. C. Swenson, S. Bera and V. Nair

Abstract: Ambiguity concerning the base structure of 6-oxoisocytidine methanol solvate {systematic name: 4-(R)-[4-amino-2,6-dioxopyrimidine-1-yl]-3(S)-hydroxy-2(R)-furanmethanol methanol solvate}, C₁₈H₁₈N₁₈O₁₈·CH₃OH, is resolved by the crystal structure reported here. The 3-imine N site is protonated and forms a hydrogen bond with the 6-oxo carbonyl group of an adjacent molecule. The solid-state packing leads to the formation of sheets of molecules with the intervening space occupied by disordered methanol solvent molecules.

Online 31 August 2002

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