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Synthesis and characterization of organotitanium substituted heteropolytungstosilicates and their biological activity
Author(s) -
Wang XiaoHong,
Sun ZhenGang,
Liu JingFu
Publication year - 1999
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19990170514
Subject(s) - chemistry , stoichiometry , characterization (materials science) , polarography , nmr spectra database , elemental analysis , proton nmr , nuclear chemistry , stereochemistry , spectral line , inorganic chemistry , organic chemistry , nanotechnology , materials science , physics , astronomy
Tris, di‐( organotitanium) substituted tungstosilicates α,β ‐ (CpTi)3(SiW 9 037) 17– and γ‐[(CpTi)2(SiW 10 O 38 )] 6– were prepared by the reaction of C 2 TiC1 2 (Cp= η‐C 5 H 5 ) with a,β‐SiW 9 O9/34(noted α,β Siv 9 ,), γ‐SiWO8/36 (noted γ‐SiW 10 ) The products were characterized by means of elemental analysis, IR, 1 H NMR, 183 W NMR and polarography. 183 W NMR spectra of the complexes support the stoichiometry of the new heteropolyanions and the probable retention of the A‐XW 9 or γ‐SiWl O units. And the organotitanium substituted compounds showed promising in vitro antitumor activity in two of human tumor cell lines.