ChemInform Abstract: Redetermination of the Crystal Structures of the Hexahydroxometallates...

1
2000 structure structure (solids and liquids) D 2000 48 - 004 Redetermination of the Crystal Structures of the Hexahydroxometal- lates Na 2 Sn(OH) 6 ,K 2 Sn(OH) 6 , and K 2 Pb(OH) 6 . The structure of the isotypic title compounds is solved including the hydrogen positions (single crystal XRD). The compounds crystallize in the rhombohedral space group R 3 with Z = 3. In all three compounds Sn, respectively Pb is octahedrally coordinated to OH - ions. Na 2 Sn(OH) 6 possess a CdI 2 like superstructure with Na and Sn in octahedral interstices. The O atoms are hexagonal close packed. In solid K 2 Sn(OH) 6 and K 2 Pb(OH) 6 the potassium ions have nine nearest O neighbors. As revealed by Raman spectroscopy hydrogen bonds are important in the potassium compounds. — (JACOBS, HERBERT; STAHL, RAINER; Z. Anorg. Allg. Chem. 626 (2000) 9, 1863-1866; Lehrstuhl Anorg. Chem., Univ. Dortmund, D-44221 Dortmund, Germany; DE) 1

Transcript of ChemInform Abstract: Redetermination of the Crystal Structures of the Hexahydroxometallates...

Page 1: ChemInform Abstract: Redetermination of the Crystal Structures of the Hexahydroxometallates Na2Sn(OH)6, K2Sn(OH)6, and K2Pb(OH)6.

2000 structure

structure (solids and liquids)D 2000

48 - 004Redetermination of the Crystal Structures of the Hexahydroxometal-lates Na2Sn(OH)6, K2Sn(OH)6, and K2Pb(OH)6. — The structure ofthe isotypic title compounds is solved including the hydrogen positions (singlecrystal XRD). The compounds crystallize in the rhombohedral space groupR3 with Z = 3. In all three compounds Sn, respectively Pb is octahedrallycoordinated to OH− ions. Na2Sn(OH)6 possess a CdI2 like superstructure withNa and Sn in octahedral interstices. The O atoms are hexagonal close packed.In solid K2Sn(OH)6 and K2Pb(OH)6 the potassium ions have nine nearest Oneighbors. As revealed by Raman spectroscopy hydrogen bonds are importantin the potassium compounds. — (JACOBS, HERBERT; STAHL, RAINER; Z.Anorg. Allg. Chem. 626 (2000) 9, 1863-1866; Lehrstuhl Anorg. Chem., Univ.Dortmund, D-44221 Dortmund, Germany; DE)

1