Received 17 June 2008
In the title compound, Na3(C6H15N5O)2[Al(OH)6Mo6O18]2Cl·20H2O, the [Al(OH)6Mo6O18]3- polyoxoanion has a B-type Anderson structure exhibiting approximate D3d symmetry. There are two types of sodium cations: the Na+ cations of type I have a distorted octahedral coordination geometry formed by six O atoms and are statistically distributed over two positions with equal occupancies, while the coordination polyhedra of the two Na+ cations of type II share one Cl anion located on an inversion center. The latter fragment, containing a Cl anion and two sodium cations, links two polyoxoanions into centrosymmetric blocks. The diprotonated 1-[imino(morpholino)methyl]guanidinium cations and uncordinated water molecules contribute to extensive N-HO and O-HO hydrogen bonding, resulting in the formation a three-dimensional supramolecular structure.
For related literature, see: Cao et al. (2007); Cheng et al. (2007); Lee et al. (1991); Li et al. (2005); Pope (1983); Shivaiah et al. (2003); Wang et al. (2007). For general background, see: Brown & Altermatt (1985).
Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CV2425 ).
This work was supported by the National Science Foundation of China (grant No. 20571014), the Program for New Century Excellent Talents in Universities (NCET-07-0169), and the Analysis and Testing Foundation of Northeast Normal University.
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