（Z）-α-Selanyl alkenyl Grignard reagents 2 were prepared conveniently by treatment of α-bromovinylselenides 1 with magnes......

对叔丁基硫杂杯[4]芳烃与氯乙酸乙酯在K2CO，／丙酮体系中反应，选择性地合成了三取代乙氧羰基甲氧基硫杂杯[4]芳烃，产率78％，其结构经^1HNMR......

Potassium α-and β-trivanadoenneatungstogermanates were prepared and characterized by means of elemental analysis, IR, ......

Ｐｒｅｐａｒａｔｉｏｎ，ＣｈａｒａｃｔｅｒｉｚａｔｉｏｎａｎｄＣａｔａｌｙｔｉｃＡｃｔｉｖｉｔｙｏｆＡｎｉｏｎｉｃＣｌａｙＰｉｌｌａｒｅｄｂｙＧａＷ＿９Ｚｎ＿３ＺＨＡＨＧＪｉ－ｙｕ；ＺＨＡＮＧＳｈｕ－ｙｕｎ；ＹＵＸｉｎ－ｗｕ；ＨＵＣｈａｎｇ－ｗｅｎＬ.........

Introduction Recently substituted-type of heteropolyanions has received much attention from the point of view of their c......