کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1325924 | 977411 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of molybdenocene(IV) and tungstenocene(IV) tropolonato complexes: Its derivative containing calix[4]arene moiety Synthesis of molybdenocene(IV) and tungstenocene(IV) tropolonato complexes: Its derivative containing calix[4]arene moiety](/preview/png/1325924.png)
The cationic di-μ-hydroxo dinuclear complexes of molybdenocene and tungstenocene [Cp2M(μ-OH)2MCp2]+ (Cp = η-C5H5; M = Mo or W) react with tropolone to afford corresponding tropolonato complexes [Cp2M(trop)]+ (trop = C7H5O2). The products were investigated by IR, 1H NMR, and 13C NMR spectroscopy as well as by X-ray crystallography (M = W). The structure shows that the central metal is surrounded by a distorted tetrahedral array of the two centers of cyclopentadienyl ligands and the two oxygen atoms of tropolonato ligand. The reaction has been extended to the synthesis of calix[4]arene receptor functionalized at the 1,3-positions of the upper rim with two tropolonato-molybdenocene centers.
The cationic di-μ-hydroxo dinuclear complexes of molybdenocene and tungstenocene [Cp2M(μ-OH)2MCp2]+ (Cp = η-C5H5; M = Mo or W) react with tropolone to afford tropolonato complexes [Cp2M(trop)]+ (trop = C7H5O2). The reaction has been extended to the synthesis of calix[4]arene receptor functionalized at the 1,3-positions of the upper rim with two tropolonato–molybdenocene centers.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 3, 15 January 2006, Pages 282–286