Schumann Herbert, Hummert Markus, Lukoyanov Anton N, Fedushkin Igor L
Institut für Chemie der Technischen Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany.
Chemistry. 2007;13(15):4216-22. doi: 10.1002/chem.200601649.
The reactions of the disodium salt of the 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-BIAN) ligand with one equivalent of Me2AlCl in diethyl ether, toluene, and benzene produced the complexes [Na(Et2O)2(dpp-BIAN)AlMe2] (1), [Na(eta6-C7H8)(dpp-BIAN)AlMe2] (2) and [Na(eta6-C6H6)(dpp-BIAN)AlMe2] (3), respectively. Recrystallization of 1 from hexane afforded solvent-free [{Na(dpp-BIAN)AlMe2}n] (4) or [Na(Et2O)(dpp-BIAN)AlMe2] (5) depending on the temperature of the solvent. The molecular structures of 1-5 have been determined by single-crystal X-ray diffraction. The sodium cation coordinates either one of the naphthalene rings (1) or the diimine part of the dpp-BIAN ligand (2-5). In the complexes 2 and 3, the sodium cation additionally coordinates the toluene (2) or benzene molecule (3) in an eta6-fashion.
1,2 - 双[(2,6 - 二异丙基苯基)亚氨基]苊的二钠盐（dpp - BIAN）配体与一当量的Me₂AlCl在乙醚、甲苯和苯中反应，分别生成配合物[Na(Et₂O)₂(dpp - BIAN)AlMe₂]（1）、[Na(η⁶ - C₇H₈)(dpp - BIAN)AlMe₂]（2）和[Na(η⁶ - C₆H₆)(dpp - BIAN)AlMe₂]（3）。从己烷中重结晶1，根据溶剂温度可得到无溶剂的[{Na(dpp - BIAN)AlMe₂}ₙ]（4）或[Na(Et₂O)(dpp - BIAN)AlMe₂]（5）。1 - 5的分子结构已通过单晶X射线衍射确定。钠阳离子与萘环之一（1）或dpp - BIAN配体的二亚胺部分（2 - 5）配位。在配合物2和3中，钠阳离子还以η⁶ - 方式与甲苯分子（2）或苯分子（3）配位。
