本帖最后由 gjh02660 于 2014-2-27 11:22 编辑
Umicore HS432 [1,3-Bis(cyclohexyl)imidazol-2-ylidene][1,3-divinyl-1,1,3,3-tetramethyldisiloxane]platinum(0) (ICy)Pt(vs) · Chemical formula | C23H42N2OSi2Pt | Empirical formula | (ICy)Pt(vs) | Molecular weight [g/mol] | 613.84 | Metal | Pt | Theoretical metal content [%] | 32 | Physical state | crystalline | Color | white | Stability | air and moisture stable | Metal purity [%] | 99.95 | Reactivity | |
cedproprietary plati Umicore HS425 [1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene][1,3-divinyl-1,1,3,3-tetramethyldisiloxane]platinum(0) (IPr)Pt(vs) · Chemical formula | C35H54N2OSi2Pt | Empirical formula | (IPr)Pt(vs) | Molecular weight [g/mol] | 770.08 | Metal | Pt | Theoretical metal content [%] | 25 | Physical state | crystalline | Color | white | Stability | air and moisture stable | Metal purity [%] | 99.95 | Reactivity | |
Advantages vs. “classical” systems “Speier’s” and “Karstedt’s” catalyst Highly active & selective, at typically lowercatalyst loading › no undesired by-products by e. g. isomerization & hydrogenation » Pt centers stabilized by N-heterocyclic carbeneligand › to avoid formation of Pt colloids » Stable towards air & moisture, non-hygroscopic › easy handling, defined complexesan
联系:广州拓利化工有限公司 郭先生 18664897654 QQ:151398660
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