• 作者： 蘇展政; 翁春和; 林文慧; 紀明珠; 李光華; 丁哲聖; 詹錫欽; K.O.Hodgson
• 作者服務機構： 國立臺灣師範大學化學研究所; 史坦福大學化學系
• 中文摘要： 二氯二氧鉬錯合物，二氯二亞硝醯鉬錯合物，及四羰鉬錯合物，均為高效率的均態環氧化觸媒，其中L2代表一個中性雙齒配子，或兩個中陸單齒配子，觸媒之活性與中性配子有關，並依 di-phos oxide > bipy >>phen 遞減，說明了反應時中性配子保持接於金屬中心，而氯則掉離。具有MO(CO)4及MoO2Cl2接於diphos 型之支撐觸媒予於合成，並研究其對環己烯之環氧化反應，反應較其均態類似物為慢。支撐觸媒之選擇性於氯(炭巠)類溶液中，總是達到100％，而且可以再使用，其活性不因聯結鏈長改變而有明顯的影響。
• 英文摘要： Dichlorodioxomolybdenum(VI) complexes, MoO Cl L , dichlorodinitrosylmolybdenum(O) com-plexes, Mo(NO) Cl L , and tetracarbonylmolybdenum(O) complexes, MO(CO) L , where L representsone neutral bidentate or two neutral monodentates, are highly effective homogeneous epoxidation catalysts.ine activities or these catalysts depend on the neutral ligands and decrease as aiphos oxide >bipy>>phen. This suggests that the neutral ligands remain binding to the metal while the chloride is expelledduring the reaction. Polymer supported catalysts with either MO(CO) or MoO cl coordinated to adiphos type binding site were synthesized and their epoxidation of cyclohexene were studied. The reac-tions are slower than their homogenous analogs. In chlorohydrocarbons, the selectivities of supportedcatalysts always reach to 100% and they can be reused. Their activities are not significantly varied by thelength of the linkage chain.
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