Crystal structure of the La3+ sandwich complex based on 8-membered macrocyclic siloxanolate ligands |
| |
| Authors: | V. A. Igonin S. V. Lindeman Yu. T. Struchkov O. I. Shchegolikhina Yu. A. Molodtsova Yu. A. Pozdnyakova A. A. Zhdanov |
| |
| Affiliation: | (1) A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 117813 Moscow, Russian Federation |
| |
| Abstract: | The product of the reaction between anhydrous lanthanum trichloride and potassium vinylsiloxanolate, K5[VinSiO2]8La4( 4-OH)[O2SiVin]8 · 5n-BuOH·2H2O has been studied by X-ray diffraction. The compound is a «sandwich»-type complex where macrocyclic vinyloctasiloxanolate ligands with regularcis-configuration have co-axial and antiparallel orientation. These ligands coordinate a planar «cationic layer» formed by four La3+ ions and stabilized by an additional 4-OH– bridge ligand. A three-dimensional cage structure of complex lanthansiloxanolate pentaanions linked through the coordinated K+ counter-ions is formed in the crystal studied.Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 184–189, January, 1993. |
| |
| Keywords: | metal siloxanolates macrocyclic complexes organosilicon compounds complexes of rare-earth elements |
| 本文献已被 SpringerLink 等数据库收录！ |
