Formation of Binuclear Ruthenium(II) Aqua Complexes and a Mononuclear Ammonia Complex Bearing P−P−O Facial Tridentate Ligands and Oxametallacycle Moieties
作者:Fumiaki Tsunawaki、Yasuyuki Ura、Teruyuki Kondo、Tomomichi Iwasa、Tatsuro Harumashi、Take-aki Mitsudo
DOI:10.1021/om060066o
日期:2006.5.1
The reaction of Ru(η6-cot)(dmfm)2 (1; cot = 1,3,5-cyclooctatriene, dmfm = dimethyl fumarate) with water and dppe derivatives (dppe = 1,2-bis(diphenylphosphino)ethane) having two or four methoxy groups at the ortho positions of the phenyl rings, (S,S)-DIPAMP or o-MeO-dppe, afforded the unique binuclear Ru(II) aqua complexes 4a,b, where two oxaruthenacycles are combined and hold a water molecule by coordination
茹(η的反应6 -cot)(dmfm)2(1 ;婴儿床= 1,3,5-辛三烯,dmfm =富马酸二甲酯)与水和DPPE衍生物(DPPE = 1,2-双(二苯基膦基)乙烷) (S,S)-DIPAMP或o -MeO-dppe在苯环的邻位具有两个或四个甲氧基的化合物,提供了独特的双核Ru(II)水配合物4a,b,其中两个氧杂萘并合并保持X射线晶体学表明,水分子通过配位和氢键结合。尽管配合物4b呈固态双核形式,但在溶液中发生崩解,生成单核水配合物4b '。配合物4b进一步用氨处理,通过配体用水置换形成单核Ru(II)氨配合物5。这些络合物中的水氧原子和氨氮原子可以被视为固态的手性中心,因为它们有四个不同的基团,通过与钌和不等价的氢键配位而区分。