caa a22 4500 378883968 CHVBK 20180305123438.0 cr unu---uuuuu 161128e20041001xx s 000 0 eng 10.1524/zkri.219.10.637.50822 doi (NATIONALLICENCE)gruyter-10.1524/zkri.219.10.637.50822 Similarities between the clathrasils DOH, DDR, MEP and MTN [Elektronische Daten] [Henk van Koningsveld, Hermann Gies] Clathrasils are porous framework silicates with cage-like voids. Structural similarities between the clathrasils DOH, MTN, MEP, DD3H and DDR have been analyzed in the context of host/guest interaction and crystallization mechanism. A building unit consisting of 30 T atoms is used as common structural feature to give an alternative description of the well-known layers of [512]-cages. The [512]-layers, or Periodic Building Units (PerBU's), are constructed from two 12-rings connected through a common 6-ring to form two half cages or a 12-ring double cup. These ‘half-cages' are essentially the bottom of the large ‘inter-layer' cages in the clathrasils. The rigorous derivation of all possible framework types and their cages based on these principles shows the richness of the concept and makes possible new strategies for the synthesis. The ‘half-cages' are also possible candidates for precursors which might exist in solution in close contact with templating guest species initiating the nucleation of the crystals. © 2004 Oldenbourg Wissenschaftsverlag GmbH Crystallography nationallicence Inorganic chemistry nationallicence Organic chemistry nationallicence van Koningsveld Henk aut Gies Hermann aut Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 219/10(2004-10-01), 637-643 2194-4946 219:10<637 2004 219 zkri https://doi.org/10.1524/zkri.219.10.637.50822 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zkri.219.10.637.50822 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- van Koningsveld Henk aut NATIONALLICENCE 700 1- Gies Hermann aut NATIONALLICENCE 773 0- Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 219/10(2004-10-01), 637-643 2194-4946 219:10<637 2004 219 zkri CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter