有机金属衍生物α,β-[(RSn)_3GeW_9O_(37)]^(7-)的合成与性质研究

SYNTHESIS AND CHARACTERIZATION OF ORGANOTIN CONTAINING α,β [(RSn) 3GeW 9O 37 ] 7- HETEROPOLYTUNGSTATES

本文报道了α，β－Ｍ４Ｈ３［（ＲＳｎ）３ＧｅＷ９Ｏ３７］·ｎＨ２Ｏ（Ｍ＝Ｂｕ４Ｎ＋，Ｍｅ４Ｎ＋；Ｒ＝Ｂｕ，Ｐｈ）杂多配合物的合成、表征及催化性能研究、元素分析、红外光谱和紫外光谱、１Ｈ、１１９Ｓｎ和１８３Ｗ核磁共振谱、激光飞行时间（ＴＯＦ）质谱和极谱数据表明，这些新化合物为三取代的Ｋｅｇｇｉｎ结构，三个（ＲＳｎ）３＋属不同的Ｍ３Ｏ１３单元并且彼此共角相连，标题杂多化合物主要以单体形式存在且对烯烃环氧化反应具有催化活性。

Heteropolytungstates α,β [(RSn) 3GeW 9O 37 ]·nH 2O (M=Bu 4N +, Me 4N +; R=Bu, Ph) have been prepared and characterized by elemental analysis, IR, UV spectroscopy, 1H, 119 Sn and 183 W NMR, Polarography and Time of Flight (TOF) mass spectroscopy 183 W NMR of the title anion indicates the new complexes have Keggin structure with three substituted (RSn) 3+ groups occupying the vacant sites in a triad of corner sharing RSnO 6 octahedron The TOF spectra show the title anions exist as monomers Catalytic activity of the title anions for olefin epoxidation is also survied