[WO(Ot-Bu)4] with L3H4 unexpectedly afforded [W(Ot-Bu)2L3]·MeCN (9·MeCN). The molecular crystal structures for 1–9 are reported, and the ability of these complexes to act as catalysts for the ring opening polymerization (ROP) of ε-caprolactone (ε-CL), δ-valerolactone (δ-VL) and ω-pentadecalactone (ω-PDL) has been investigated. The molybdenum complexes 1 and 4 were the best performers for ε-Cl and δ-VL, but all
由[Mo(O)(Cl)4 ]或[ [M(O)(L 1)2 ](M = Mo(1 ·己烷),W(2 ·2MeCN))制备单氧芳基氧化物配合物。W(O)(O t- Bu)4 ]和两个当量的二
酚2,2'-亚乙基双(4,6-二叔
丁基苯酚)L 1 H 2。使用具有两个当量的L 1 H 2的原位生成的[Mo(O)(O t -Bu)4 ]也导致了1 ·2MeCN的分离。在不定氧存在下,尝试原位生成[Mo(O)(O t -Bu)4 ],并与一当量的L 1 H 2反应,得到双
金属络合物[Mo(O)(L 1)(μ-O)Li(THF)(MeCN) ] 2 ·2MeCN(3 ·2MeCN)。使用四
苯酚α,α,α,α'-四'(3,5-二-叔丁基-2-羟基苯基) - p -xyleneH 4(L 2 ħ 4)与[沫(O)( O i -Pr)4 ]导致[Mo(O)] L 2 } 2(4)的分离,而类似的
钨络合物[W(O)]