...Zhi LIN; João ROCHA Abstract The small-pore framework stannosilicate Na 2 SnSi 4 O 11 .2H 2 O (Sn-AM-3), exhibiting the structure-type of the rare mineral penkvilksite-2 O , has been synthesized via a seeded hydrothermal process. The estimated cell dimensions are: a = 16.52, b = 8.80, c = 7.48 Å...

...Figure 5. (a,b) Polyhedral representation of the structure of stannosilicate AV-10; (c) the helix chains of SiO 4 tetrahedra in AV-10. Dark SnO 6 octahedra, light grey SiO 4 tetrahedra. Cations and water molecules are omitted for clarity. ...

... of stannosilicates . Microporous and Mesoporous Materials , 117 , 423 – 430 . Kim , M.H. , Ko , Y. , Kim , S.J. , and Uh , Y.S. ( 2001 ) Vapor phase Beckmann rearrangement of cyclohexanone oxime over metal pillared ilerite . Applied Catalysis, A: General , 210 , 345 – 353 . Kim...

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... of the synthetic titanosilicate ETS–10; Zhao et al . 2003 ). Although substantial research efforts have been devoted to mixed (tetrahedral–octahedral) framework titanosilicates (as well as the similarly behaving zircono- and stannosilicates), mixed-framework silicates with M 3+ O 6 octahedra only have been...

... . Liao C.H. Chang P.C. Kao H.M. Lii K.H. ( 2005 ) Synthesis, crystal structure, and solid-state NMR spectroscopy of a salt-inclusion stannosilicate: [Na 3 F][SnSi 3 O 9 ] . Inorganic Chemistry 44 , 9335 – 9339 . Mandarino J.A. ( 1981 ) The Gladstone-Dale relationship. IV...

... . The Journal of Physical Chemistry , B , 111 , 3576 – 3582 . Lo , F.-R. and Lii , K.-H. ( 2005 ) High-temperature, high-pressure hydrothermal synthesis and characterization of a new framework stannosilicate: Cs 2 SnSi 3 O 9 . Journal of Solid State Chemistry , 178 , 1017 – 1022...

... of microporous framework zirconium silicates . Journal of Physical Chemistry , B103 , 957 – 963 . Lin , Z. , Rocha , J. and Valente , A. ( 1999b ) Synthesis and characterisation of a framework microporous stannosilicate . Chemical Communications , 1999 , 2489 – 2490 . Maksimov...

... , Lopes M , Fernandez C ( 2001b ) Ab initio structure determination of a small-pore framework sodium stannosilicate . Inorg Chem 40 : 3330 – 3335 Ferreira A , Lin Z , Soares MR , Rocha J ( 2004 ) Synthesis and ab initio structure determination from powder...

...–Ca> = 104°; Kossiakoff & Leavens 1976 ), again in agreement with Pauling’s third rule (as alkalis, by contrast, are predicted to share edges because of their lower charge and high ionic radii). The same topology was observed in all naturally occurring stannosilicates, including malayaite...