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首页> 外文期刊>Journal of Sol-Gel Science and Technology >Effect of Concentration of the Diazoalcene Molybdenum Complex Immobilized in Ureasil Matrix
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Effect of Concentration of the Diazoalcene Molybdenum Complex Immobilized in Ureasil Matrix

机译：尿素基体中固定化重氮茂钼配合物的影响

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摘要

The complex trans-[FMo(NNCHCHCHCH_2CH_3)(Ph_2PCH_2CH_2PPh_2)_2][BPh_4],was dispersed in a hybrid matrix synthesized by a sol-gel process.The host matrix of the so-called ureasil is a network of silica to which oligopolyoxyethylene chains [POE,(OCH_2CH_2)_n] are grafted by means of urea cross-links.The free complex and sol-gel materials were characterized by thermal analysis (DSC),surface analysis (XPS) and spec-troscopic methods (FT-IR and UV/Vis).The data gathered indicates that the molybdenum(IV) complex is immobilized in the host matrix,and it exhibits structural properties different from those of the free form.These differences could arise either from distortions caused by steric effects imposed by the structure of hybrid matrix or by interactions with the matrix.These materials shows potential applications in heterogeneous catalysis in mild conditions.
机译：复杂的反式[FMo（NNCHCHCHCH_2CH_3）（Ph_2PCH_2CHh_2PPh_2）_2] [BPh_4]分散在通过溶胶-凝胶法合成的杂化基质中。 [POE，（OCH_2CH_2）_n]通过尿素交联而接枝。通过热分析（DSC），表面分析（XPS）和光谱法（FT-IR和UV / Vis）。收集到的数据表明，钼（IV）配合物固定在主体基质中，其结构性质与游离形式不同，这些差异可能是由于化合物的空间效应引起的扭曲引起的。这些材料显示了在温和条件下在非均相催化中的潜在应用。

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