Synthesis and Single Crystal X-ray Structures of Cationic Zinc -Diketiminate Complexes
Synthesis and Single Crystal X-ray Structures of Cationic Zinc -Diketiminate Complexes
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DOI：
10.1002/zaac.201300119
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发表时间：
2013-06-01
影响因子：
1.4
通讯作者：
Roll, Joachim
中科院分区：
文献类型：
--
作者：
Scheiper, Christoph;Schulz, Stephan;Roll, Joachim
L1ZnCl 与 Li[Al(OC(CF3)3)4] 反应得到带有弱配位铝酸盐阴离子的阳离子锌配合物 [L1Zn][Al(OC(CF3)3)4] (1) (L1 = {[(2,4,6-Me3-C6H2)NC(Me)]2CH})。此外，碱稳定的锌阳离子 [L1/2Zn(base)2][X] (2-5) (L2 = {[(2,6-iPr2-C6H3)NC(Me)]2CH}; X = [Al(OC(CF3)3)4], [B(C6F5)4]) 含有弱配位阴离子和不同的路易斯碱（二甲氨基吡啶 (dmap)，合成了叔丁基吡啶（tBuPy）并进行了结构表征。此外，报告了L1ZnMe (6) 和中性碱稳定配合物tBuPy-Zn(Cl)L1 (7) 和碱-Zn(Me)L2 (base = dmap 8, tBuPy 9) 的固态结构，并与2-5 的固态结构进行了比较。初步研究表明1在160℃下对丙交酯聚合具有催化活性。
The cationic zinc complex [L1Zn][Al(OC(CF3)3)4] (1) (L1 = {[(2,4,6-Me3-C6H2)NC(Me)]2CH}) bearing a weakly coordinating aluminate anion was obtained from reaction of L1ZnCl with Li[Al(OC(CF3)3)4]. In addition, base-stabilized zinc cations [L1/2Zn(base)2][X] (2-5) (L2 = {[(2,6-iPr2-C6H3)NC(Me)]2CH}; X = [Al(OC(CF3)3)4], [B(C6F5)4]) containing weakly coordinating anions and different Lewis bases (dimethylaminopyridine (dmap), tert-butylpyridine (tBuPy)) were synthesized and structurally characterized. Moreover, the solid-state structures of L1ZnMe (6) and the neutral base-stabilized complexes tBuPy-Zn(Cl)L1 (7) and base-Zn(Me)L2 (base = dmap 8, tBuPy 9) are reported and compared with those of 2-5. Preliminary studies showed that 1 is catalytically activity in lactide polymerization at 160 degrees C.