Conformationally Rigid Chelate Rings in Metal Complexes of Pyridyloxy-Substituted 2,2‘-Dioxybiphenyl-Cyclotetra- and Cyclotriphosphazene Platforms
作者:Eric W. Ainscough、Andrew M. Brodie、Andreas Derwahl、Steve Kirk、Carl A. Otter
DOI:10.1021/ic701241v
日期:2007.11.1
2'-dioxybiphenyl)tetrakis(2-pyridyloxy)cyclotetraphosphazene (L6)]. Single-crystal X-ray structures show the L2 ligand complexes to have a N3Cl2 five-coordinate, trigonal-bipyramidal donor set with the phosphazene ring and pendant pyridyloxy nitrogens binding to the metal ions. The coordinated L2 ligand in the complex, [CoL2Cl2], slowly hydrolyses in acetonitrile with the loss of a pyridine pendant arm to form a dimetallic
二价金属卤化物与吡啶氧基取代的2,2'-二氧基联苯-环三-和环四磷腈配体反应形成配合物,[MLX2] [M = Co或Cu; L =(2,2'-二氧联苯)四(2-吡啶氧基)环三磷腈(L1)或(2,2'-二氧联苯)四[4-甲基-2-吡啶氧基)环三磷腈(L2); X = Cl或Br],[ZnLCl2] [L =双(2,2'-二氧联苯)双(2-吡啶氧基)环三磷腈(L3)或双(2,2'-二氧联苯)双(4-甲基-2-吡啶氧基)环三磷腈(L4)],[MLCl2] [M = Cu或Hg;L =三(2,2'-二氧基联苯)双(2-吡啶氧基)环四磷腈(L5)]和[Cu2LCl4](L =反式双(2,2'-二氧基联苯)四[2-吡啶氧基)环四磷腈(L6) ]。单晶X射线结构显示L2配体配合物具有N3Cl2五坐标,具有磷腈环和侧链吡啶氧基氮原子与金属离子结合的三方-双锥体供体。配合物中的配位L2配体[CoL2Cl2