Synthesis and Crystal Structure of Unprecedented Oxo/Hydroxo-Bridged Polynuclear Gallium(III) Aqua Complexes
| Autor: | Maxim N. Sokolov, Natalia V. Kuratieva, E. A. Mainicheva, Olga A. Gerasko, Dmitry Yu. Naumov, Vladimir P. Fedin |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Stereochemistry
Supramolecular chemistry Nucleation chemistry.chemical_element Cavitand General Medicine Crystal structure Inorganic Chemistry Metal chemistry.chemical_compound Crystallography Octahedron chemistry visual_art Pyridine visual_art.visual_art_medium Physical and Theoretical Chemistry Gallium |
| Zdroj: | Inorganic Chemistry. 44:4133-4135 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/ic0502271 |
| Popis: | Two new polynuclear oxo/hydroxo-bridged polynuclear gallium(III) aqua complexes are obtained upon treatment of Ga(3+)(aq) with pyridine: the supramolecular compound of macrocyclic cavitand cucurbit[6]uril with gallium complex containing 32 metal atoms [Ga(32)(mu(4)-O)(12)(mu(3)-O)(8)(mu(2)-O)(7)(mu(2)-OH)(39)(H(2)O)(20)](PyH subsetC(36)H(36)N(24)O(12))(3)(NO(3))(6).53H(2)O (1) and the tridecanuclear complex [Ga(13)(mu(3)-OH)(6)(mu(2)-OH)(18)(H(2)O)(24)](NO(3))(15).12H(2)O (2). It follows that two modes of nucleation exist when Ga(3+)(aq) is hydrolyzed: one around the tetrahedral GaO(4) units (complex 1) and the other around the octahedral GaO(6) units (complex 2). This is the first time that polynuclear oxo/hydroxo-bridged aqua complexes of Ga(III) have been isolated without the use of other ligands to control or block olygomerization. |
| Databáze: | OpenAIRE |
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