CRYSTAL-STRUCTURE OF THE LA3-MEMBERED MACROCYCLIC SILOXANOLATE LIGANDS( SANDWICH COMPLEX BASED ON 8)

Authors
IGONIN VA LINDEMAN SV STRUCHKOV YT SHCHEGOLIKHINA OI MOLODTSOVA YA POZDNYAKOVA YA ZHDANOV AA
Citation
Va. Igonin et al., CRYSTAL-STRUCTURE OF THE LA3-MEMBERED MACROCYCLIC SILOXANOLATE LIGANDS( SANDWICH COMPLEX BASED ON 8), Russian chemical bulletin, 42(1), 1993, pp. 168-173
Citations number
6
Categorie Soggetti
Chemistry
Journal title
Russian chemical bulletin → ACNP
ISSN journal
10665285
Volume
42
Issue
1
Year of publication
1993
Pages
168 - 173
Database
ISI
SICI code
1066-5285(1993)42:1<168:COTLMS>2.0.ZU;2-V
Abstract
The product of the reaction between anhydrous lanthanum trichloride an d potassium vinylsiloxanolate, K5{[VinSiO2]8La4(mu4-OH)[O2SiVin]8}.5n- BuOH.2H2O has been studied by X-ray diffraction. The compound is a <<s andwich>>-type complex where, macrocyclic vinyloctasiloxanolate ligand s with regular cis-configuration have co-axial and antiparallel orient ation. These ligands coordinate a planar <<cationic layer>> formed by four La3+ ions and stabilized by an additional mu4-OH- bridge ligand. A three-dimensional cage structure of complex lanthansiloxanolate pent aanions linked through the coordinated K+ counter-ions is formed in th e crystal studied.