Synthesis and Characterization of Nitroxide-Linked Ruthenium Complexes as Molecular Probes for Microheterogeneous Environments
作者:Stefan H. Bossmann、Naresh D. Ghatlia、M. Francesca Ottaviani、Claudia Turro、Heinz Dürr、Nicholas J. Turro
DOI:10.1055/s-1996-4384
日期:1996.11
Several new TEMPO (2,2,6,6-tetramethylpiperidine N-oxide)-labeled ruthenium complexes were prepared. They can be discerned in two different classes featuring rigid and flexible linkers between the ruthenium(II)-polypyridyl complex and the stable nitroxide. The bis(heteroleptic) ruthenium complexes were synthesized from [Ru(L2)]Cl2 (L = 2,2’-bipyridine or 1,10-phenanthroline) and newly prepared phenanthroline-TEMPO-ligands. Finally, a tris(heteroleptic), spin-labeled ruthenium complex has been prepared from [Ru(DMSO)4]Cl2, dipyrido[3,2-a:2’,3’-c]phenazine (dppz), 1,10-phenanthroline and a phenanthroline-TEMPO-ligand with a rigid linker.
几种新的TEMPO(2,2,6,6-四甲基哌啶N-氧化物)标记的钌配合物被合成。这些配合物分为两种不同类别,分别具有刚性和灵活的连接体,连接钌(II)-聚吡啶配合物和稳定的氮氧自由基。双(杂配体)钌配合物是从[Ru(L2)]Cl2(L = 2,2'-联吡啶或1,10-菲啉)和新合成的菲啉-TEMPO配体制备的。最后,三(杂配体)的自旋标记钌配合物则是由[Ru(DMSO)4]Cl2、二吡啶[3,2-a:2',3'-c]菲嗪(dppz)、1,10-菲啉以及与刚性连接体的菲啉-TEMPO配体合成的。