Department Chemie und Pharmazie, Friedrich-Alexander-Universität, Erlangen, Germany.
Angew Chem Int Ed Engl. 2011 Aug 22;50(35):8184-7. doi: 10.1002/anie.201102795. Epub 2011 Jul 8.
Squaring the circle: the novel dienamido pincer ligand N(CHCHPtBu(2))(2)(-) affords the isolation of the unusual square-planar iridium(II) and iridium(III) amido complexes IrCl{N(CHCHPtBu(2))(2)} (n=0 (1), +1 (2)). In contrast, the corresponding iridium(I) complex of the redox series (n=-1) is surprisingly unstable. The diamagnetism of 2 is attributed to strong N→Ir π donation.
新型二胺基钳形配体 N(CHCHPtBu(2))(2)(-)可分离得到结构罕见的平面正方形二价铱和三价铱的酰胺配合物 IrCl{N(CHCHPtBu(2))(2)} (n=0 (1), +1 (2))。与此相反，氧化还原系列中相应的铱（I）配合物（n=-1）出人意料地不稳定。2 的抗磁性归因于强的 N→Ir π 供体作用。
