Cation-Directed Synthesis of Tungstosilicates. 1. Syntheses and Structures of K10A-α-[SiW9O34]·24H2O, of the Sandwich-Type Complex K10.75[Co(H2O)6]0.5[Co(H2O)4Cl]0.25A-α-[K2{Co(H2O)2}3(SiW9O34)2]·32H2O and of Cs15[K(SiW11O39)2]·39H2O

Autor:	Jérôme Marrot, Gilbert Herve, Nathalie Laronze
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Potassium chemistry.chemical_element Salt (chemistry) Crystal structure Tungsten Alkali metal Potassium Cation Inorganic Chemistry Crystallography Sandwich type chemistry Physical and Theoretical Chemistry Cobalt
Zdroj:	Inorganic Chemistry. 42:5857-5862
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic0342752
Popis:	The influence of the nature of alkali metal cations on the structure of the species obtained from the trivacant precursor A-alpha-[SiW(9)O(34)](10-) has been studied. Starting from the potassium salt 1, K(10)A-alpha-[SiW(9)O(34)].24H(2)O, the sandwich-type complex 2, K(10.75)[Co(H(2)O)(6)](0.5)[Co(H(2)O)(4)Cl](0.25)A-alpha-[K(2)(Co(H(2)O)(2))(3)(SiW(9)O(34) )(2)].32H(2)O, has been obtained. The crystal structures of these two compounds consist of two A-alpha-[SiW(9)O(34)](10-) anions linked by a set of potassium (1) or cobalt plus potassium cations (2), and the relative orientation of the two half-anions is the same. Attempts to link two A-alpha-[SiW(9)O(34)](10-) anions by tungsten atoms instead of cobalt failed whatever the alkali metal cation. Moreover, the nondisordered structure of Cs(15)[K(SiW(11)O(39))(2)].39H(2)O is described. Two [SiW(11)O(39)](8-) anions are linked through a potassium cation with a "trans-oid" conformation, and the potassium occupies a cubic coordination site.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0a38908546aa97dc65233b5d7abd65e0 https://doi.org/10.1021/ic0342752 Zobrazit plný text záznamu