The titanium tris-anilide cation [Ti(N[<sup>t</sup>Bu]Ar)<sub>3</sub>]<sup>+</sup> stabilized as its perfluoro-tetra-phenylborate salt: structural characterization and synthesis in connection with redox activity of 4,4′-bipyridine dititanium complexes
作者:Heather A. Spinney、Christopher R. Clough、Christopher C. Cummins
DOI:10.1039/c5dt00105f
日期:——
crystallize the salt [(4,4′-bipy)Ti(N[tBu]Ar)3}2][B(C6F5)4]2 for a single-crystal X-ray structure investigation; in this instance it was revealed that the aromaticity of the 4,4′-bipyridine ligand, that had been disrupted upon reduction, had been regained. A rare cationic d0 metal tris-amide complex, shown by X-ray crystallography to contain an intriguing pyramidal TiN3 core geometry, namely Ti(N[tBu]Ar)3}+
这项工作探索了使用两当量的钛(III)配合物Ti(N [ t Bu] Ar)3还原导致形成黑色结晶配合物(4,4'-联吡啶)的4,4'-联吡啶的还原过程。Ti(N [ t Bu] Ar)3 } 2,报告了其X射线结构确定。发现中性的黑色的4,4'-联吡啶桥联的双金属具有氧化还原活性,单阴离子和双阴离子可以通过电化学方式获得,单阳离子和双阳离子也可以通过化学方式获得,并且在至少在使用弱配位阴离子[B(C 6 F 5)4 ]时-作为抗衡离子。对于单晶X射线结构,已证明可以使盐[(4,4'-bipy)Ti(N [ t Bu] Ar)3 } 2 ] [B(C 6 F 5)4 ] 2结晶。调查; 在这种情况下,发现还原后被破坏的4,4'-联吡啶配体的芳香性已恢复。当使用[B]时,也可以分离出一种稀有的阳离子d 0金属三酰胺络合物,该X射线晶体学表明它包含有趣的金字塔形TiN 3核心几何结构,即Ti(N