Preparation and Structure of Iminopyrrolyl and Amidopyrrolyl Complexes of Group 2 Metals
Preparation and Structure of Iminopyrrolyl and Amidopyrrolyl Complexes of Group 2 Metals
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DOI：
10.1021/om201210y
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发表时间：
2012-03
期刊：
影响因子：
2.8
通讯作者：
T. Panda;Keishi Yamamoto;Koji Yamamoto;H. Kaneko;Yi Yang;H. Tsurugi;K. Mashima
中科院分区：
文献类型：
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作者：
T. Panda;Keishi Yamamoto;Koji Yamamoto;H. Kaneko;Yi Yang;H. Tsurugi;K. Mashima
2-（2，6-iPr 2C 6 H3 N-CH）-C4 H3 NH（ImpDipp-H）与二苄基钙反应，通过烷烃消除和配体烷基化反应，得到了两种吡咯钙配合物：双（亚氨基吡咯）钙（2a）和（酰胺基吡咯）钙（3a）。单（亚氨基吡咯基）络合物（亚氨基吡咯基）Ca[N（SiMe 3）2]（THF）2（4a）的制备通过向Ca[N（SiMe 3）2]2（THF）2中加入1当量1a来完成。通过胺消除反应，选择性地合成了一系列第2族金属双（亚氨基吡咯）配合物[（ImpDipp）2 M（THF）3]（M = Sr（5a），Ba（6a））和[（ImpMe）2Ca（THF）2]（2b）（2-（4-MeC 6 H4 N-CCH 3）-C4 H3 NH（ImpMe-H）），并通过X射线衍射研究了它们的分子结构.
Reactions of N-aryliminopyrrolyl ligand 1a, 2-(2,6-iPr2C6H3N═CH)-C4H3NH (ImpDipp-H), with dibenzylcalcium gave two types of pyrrolylcalcium complexes, bis(iminopyrrolyl)calcium (2a) and (amidopyrrolyl)calcium (3a), via alkane elimination and ligand alkylation reaction, respectively. Preparation of a mono(iminopyrrolyl) complex, (iminopyrrolyl)Ca[N(SiMe3)2](THF)2 (4a), was accomplished by the addition of 1 equiv of 1a to Ca[N(SiMe3)2]2(THF)2. A series of group 2 metal bis(iminopyrrolyl) complexes, [(ImpDipp)2M(THF)3] (M = Sr (5a), Ba, (6a)) and [(ImpMe)2Ca(THF)2] (2b) (2-(4-MeC6H4N═CCH3)-C4H3NH (ImpMe-H)), was selectively prepared via amine elimination reactions, and their molecular structures were clarified by X-ray diffraction studies.