• 作者： 劉瑞雄; 萬一元
• 作者服務機構： 國立清華大學化學研究所
• 中文摘要： 鉻三丙化合物，附著於氧化矽，形成化合物－O－Cr< 1　於溫和條件下，以氫氣還原化合物 1 ，可得
  －O－Cr< 2 化合物 1 及 2 之構造，可經由化學反應、紅外光譜及同位素實驗解析。此二者觸媒表現許多性質?異的
  化學反應，諸如烯之聚合及異構化作用，除此，鉻氫化合物 2 具有高度氫化活性，其反應速度與烯之構造無密切關係。
  於本文中，將依據有機金屬原理提出烯類氫化及異構化反應機構。
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• 英文摘要： Cr(allyl) complexes were immobilized on silica resulting in the formation of O-Cr (allyl) 1. Reduc-tion of 1 by H at mild conditions yielded the species -O-CrH 2. The characterization of species 1 and 2was performed through chemical analysis, labeling experiments and infrared studies. Species 1 and 2 dis-played markedly distinct behaviors toward olefin reactions such as polymerization and isomerization. Inaddition species 2 showed high activity in the hydrogenation of olefins. The rates were correlated with thesteric structures of olefins. The mechanisms in which olefin was isomerized and hydrogenated are proposedbased on their counterparts in homogeneous phases.
• 中文關鍵字： Cr allyl catalystS; polymerizatton; isomerization; hydrogenation
• 英文關鍵字： --