A new type of lanthanide complex-two divalent ytterbium species assembled from cation-π interactions

摘要

A new divalent ytterbium complex, [{(L ~(Ph))Yb ~II(Et _2O)(thf)} _2(μ-KI)] {L ~(Ph) = Ph _2Si(NAr) _2, Ar = 2,6-iPr _2C _6H _3} (3), was synthesized by the reaction of [(L ~(Ph))Yb IIII(thf) _2] (2) and an excess of potassium. The bimetallic ytterbium(II) species with bulky diamido ligands are bridged by a KI molecule with cation-π interactions. These two complexes have been fully characterized, particularly by X-ray crystallography. A new divalent ytterbium complex, [{(L ~(Ph)) Yb ~II(Et _2O)(thf)} _2(μ-KI)] {L ~(Ph) = Ph _2Si(NAr) _2, Ar = 2,6-iPr _2C _6H _3} (3), was synthesized by the reaction of [(L ~(Ph))Yb ~IIII(thf) _2] (2) and an excess of potassium. The bimetallic ytterbium(II) species with bulky diamido ligands are bridged by a KI molecule with cation-π interactions.