In this work, a group of acetylacetonate iron compounds variation of steric and electronic properties are synthesized. In the presence of exogenous triphenyl phosphate derivatives, these compounds can be uniformly transformed to active species for efficient catalyzing butadiene polymerization following 1,2 insertion up to 96.9 % with syndiotactic configuration of 98.0 % (penta ada: rrrr). Introduction of electronic withdrawing groups on the ligand and additive both promotes the activity, whereas bulky group has detrimental effect. Positive effect is exceptionally reached for methoxy-positioned additive probably ascribed from the weak interaction with active species. Significant stability against temperature, alkylaluminum, even the iron compounds in terms of activity, stereoselectivity, thus the stable thermal properties of resultant polymers are achieved. This catalyst components are readily accessible without tedious synthesis, and the polymerization is mild and operationally simple, allowing access to crystalline 1,2 polybutadienes in useful yields.

在这项工作中，合成了一组乙酰丙酮铁化合物，其空间和电子特性发生了变化。在存在外源性磷酸三苯酯衍生物的情况下，这些化合物可以均匀地转化为活性物种，以在1,2插入后高达96.9％的间同构型为98.0％，从而有效地催化丁二烯聚合反应（五元法：rrrr））。在配体和添加剂上引入电子撤去基团均能促进活性，而庞大的基团具有有害作用。对于甲氧基定位的添加剂，可能是由于与活性物质相互作用较弱而获得了积极的效果。在活性，立体选择性方面，对温度，烷基铝，甚至铁化合物具有显着的温度稳定性，因此获得了所得聚合物的稳定的热性能。该催化剂组分易于合成而无需繁琐的合成，并且聚合反应温和且操作简单，允许以有用的产率获得结晶的1,2-聚丁二烯。