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Synthesis, Structure, and Magnetism of CN3H6·VO(H2O)(HPO4)(H2PO4)·H2O, a New Guanidinium Vanadium(IV) Phosphate

✍ Scribed by Zsolt Bircsak; Annegret K. Hall; William T.A. Harrison

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
178 KB
Volume
142
Category
Article
ISSN
0022-4596

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✦ Synopsis

The solution-phase synthesis, single crystal structure, and some physical properties of CN 3 H 6 • VO(H 2 O)(HPO 4 ) (H 2 PO 4 ) • H 2 O, a new guanidinium vanadium (IV) hydrogen phosphate hydrate, are reported. This phase is built up from one-dimensional chains of VO 5 (H 2 O) octahedra and (H 2 /H)PO 4 tetrahedra and fused together via V-O-P linkages. These chains are arranged in ''crisscross'' configuration from layer to layer. Guanidinium cations and water molecules are arrayed in the interchain regions and link the chains together through a hydrogen bonding network. Magnetic susceptibility data for this phase are also reported. Crystal data: CN 3 H 6 • VO(H 2 O)(HPO 4 ) (H 2 PO 4 ) • H 2 O, M r ‫؍‬ 356.02, monoclinic, space group C2/c (No. 15), a ‫؍‬ 13.956(2) A s , b ‫؍‬ 11.717(2) A s , c ‫؍‬ 13.961(2) A s , ‫؍‬ 94.47(1)°, V ‫؍‬ 2276.1(5) A s 3 , Z ‫؍‬ 8, R ‫؍‬ 2.95%, R w ‫؍‬ 3.27% [170 parameters, 2537 observed reflections with I > 3 (I)].

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