The deepening of the studies on essentials of rare earth coordination catalyst brings about more and more reports on model compounds as active centre of the catalyst. Among them the most significant researches are tho...The deepening of the studies on essentials of rare earth coordination catalyst brings about more and more reports on model compounds as active centre of the catalyst. Among them the most significant researches are those with identification of the crystal structures of compounds.展开更多
Since the discovery of Ziegler-Natta catalyst in the early 1950s, studies on its active centre structure has aroused much interest. The isolation of active species from homo-
The particular complex property of rare earth ion with crown enables it to have a wide application in separation and extraction of metal elements and organic catalysis, etc. The crowns with rare earth nitrate salts co...The particular complex property of rare earth ion with crown enables it to have a wide application in separation and extraction of metal elements and organic catalysis, etc. The crowns with rare earth nitrate salts complex are: 15-crown-15, 18-crown-6, and 21-crown-7, etc. But up to now, there has been no report on studies of the complex crystal structure of this kind.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘The deepening of the studies on essentials of rare earth coordination catalyst brings about more and more reports on model compounds as active centre of the catalyst. Among them the most significant researches are those with identification of the crystal structures of compounds.
文摘Since the discovery of Ziegler-Natta catalyst in the early 1950s, studies on its active centre structure has aroused much interest. The isolation of active species from homo-
文摘The particular complex property of rare earth ion with crown enables it to have a wide application in separation and extraction of metal elements and organic catalysis, etc. The crowns with rare earth nitrate salts complex are: 15-crown-15, 18-crown-6, and 21-crown-7, etc. But up to now, there has been no report on studies of the complex crystal structure of this kind.
