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  • Title: Crystal structure of sodium isosaccharate, NaC6H11O6 x H2O.
    Author: Bontchev RP, Moore RC.
    Journal: Carbohydr Res; 2004 Mar 15; 339(4):801-5. PubMed ID: 14980822.
    Abstract:
    Sodium isosaccharate, NaC(6)H(11)O(6).H(2)O (Na-ISA), has been synthesized, and its crystal structure solved by single-crystal X-ray diffraction methods. Na-ISA crystallizes in the monoclinic space group P2(1) (#4) with cell parameters a = 9.2267(11) A, b = 5.0765(6) A, c = 9.7435(11) A, beta = 103.304(2) degrees, V = 444.13(9) A(3), Z = 2. The structure was refined by full-matrix least-squares on F2 yielding final R-values (all data) R1 = 0.0361 and Rw2 = 0.0935. The structure of Na-ISA consists of (C(6)H(11)O(6))(-) anions arranged in layers parallel to the bc plane. An extended network of O-H...O hydrogen bonds links the (ISA)(-) anions and the crystal water molecules. Each sodium atom is coordinated by four oxygen atoms belonging to four different (ISA)(-) anions and by one water molecule. The resulting NaO(5) polyhedra are linked by sharing common corners in zig-zag chains running parallel to the b-axis.
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