| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 41861 | Applied Catalysis A: General | 2010 | 8 Pages |
Applying novel and efficient method, new tris(triorganosilyl)phosphites were synthesized and further used for the preparation of new well-defined platinum complexes [Pt(DVTMDS){P(OSiR3)3}] (DVTMDS = (H2CCHSiMe2)2O, R3 = Si7O9(iOct)7, iPr3, MePh2, Ph3, (OtBu)3, (OSiMe3)3) which were well characterized by spectroscopic methods. Structures of two platinum(0) complexes, [Pt{η4-(H2CCHSiMe2)2O}{P(OSiPh3)3}] (10) and [Pt{η4-(H2CCHSiMe2)2O}{P(OSi(OtBu3)3}] (11) were determined by X-ray analysis. The new complexes proved to be very effective catalysts of a cross-linking of silicones via hydrosilylation at elevated temperature with relatively short cure time and the enthalpy of network formation similar to that of Pt-Karstedt's/DAM (DAM = diallyl maleate) catalytic system. Additionally, the catalyzed silicone formulation had sufficiently long pot-life at room temperature.
Graphical abstractNew tris(triorganosilyl)phosphites synthesized by an efficient method were utilized for the preparation of new platinum complexes [Pt(η4-(H2CCHSiMe2)2O){P(OSiR3)3}]. The structures of two of them were determined by X-ray analysis. These new complexes proved to be very effective catalysts of silicones curing via hydrosilylation at elevated temperature. Moreover, the catalyzed silicone mixture had sufficiently long pot-life at room temperature.Figure optionsDownload full-size imageDownload high-quality image (55 K)Download as PowerPoint slide
