Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Synthesis and crystal structure of the first thallium hydrous nesosilicate Tl4SiO4·0.5H2O. / Britvin, Sergey N.; Siidra, Oleg I.; Krivovichev, Sergey V.; Depmeier, Wulf.
в: Zeitschrift fur Anorganische und Allgemeine Chemie, Том 635, № 3, 03.2009, стр. 518-522.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Synthesis and crystal structure of the first thallium hydrous nesosilicate Tl4SiO4·0.5H2O
AU - Britvin, Sergey N.
AU - Siidra, Oleg I.
AU - Krivovichev, Sergey V.
AU - Depmeier, Wulf
PY - 2009/3
Y1 - 2009/3
N2 - Orange prismatic crystals of the first thallium hydrous nesosilicate Tl4SiO4·0.5H2O have been obtained by evaporation from aqueous solution. There are three symmetrically independent Tl+ cations and five symmetrically independent oxygen atoms in the structure of Tl4SiO4·0.5H2O. The O(4) and O(5) atoms belong to water molecules. Coordination polyhedra of the Tl + cations are strongly distorted because of the stereoactive behavior of lone electron pairs. The structure of Tl4SiO4.0. 5H2O contains sheets of SiO4 tetrahedra and Tl coordination polyhedra. The sheets have the composition [Tl3SiO 4]- and are parallel to [100]. Within the sheets, SiO 4 tetrahedra link to thallium polyhedra though common corners. The sheets are linked by dimers of face-sharing Tl(3)O5 polyhedra, thus providing interconnection of the sheets into a framework. The framework has large elliptical channels occupied by water molecules (OW2) and electron pairs of Tl+ cations. The comparison with some other M+ (M = K, Ag, Tl) silicates is given.
AB - Orange prismatic crystals of the first thallium hydrous nesosilicate Tl4SiO4·0.5H2O have been obtained by evaporation from aqueous solution. There are three symmetrically independent Tl+ cations and five symmetrically independent oxygen atoms in the structure of Tl4SiO4·0.5H2O. The O(4) and O(5) atoms belong to water molecules. Coordination polyhedra of the Tl + cations are strongly distorted because of the stereoactive behavior of lone electron pairs. The structure of Tl4SiO4.0. 5H2O contains sheets of SiO4 tetrahedra and Tl coordination polyhedra. The sheets have the composition [Tl3SiO 4]- and are parallel to [100]. Within the sheets, SiO 4 tetrahedra link to thallium polyhedra though common corners. The sheets are linked by dimers of face-sharing Tl(3)O5 polyhedra, thus providing interconnection of the sheets into a framework. The framework has large elliptical channels occupied by water molecules (OW2) and electron pairs of Tl+ cations. The comparison with some other M+ (M = K, Ag, Tl) silicates is given.
KW - Crystal engineering
KW - Lone pair
KW - Silicates
KW - Thallium
UR - http://www.scopus.com/inward/record.url?scp=62349101492&partnerID=8YFLogxK
U2 - 10.1002/zaac.200801311
DO - 10.1002/zaac.200801311
M3 - Article
AN - SCOPUS:62349101492
VL - 635
SP - 518
EP - 522
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 3
ER -
ID: 9145661