摘要
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
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1998年第3期266-271,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金