Synthesis, structure, and emissive properties of copper(I) complexes [CuI2(micro-X)2(micro-1,8-naphthyridine)(PPh3)2] (X=I, Br) with a butterfly-shaped dinuclear core having a short Cu-Cu distance.
New dinuclear copper(I) complexes [Cu2(micro-X)2(micro-1,8-naphthyridine)(PPh3)2] (X=I, Br) having the butterfly-shaped {Cu2(micro-X)2} unit show red phosphorescence at room temperature in the solid state. Molecular orbital calculations show that the emissions of the new complexes are not directly related to their short Cu...Cu separations [2.6123(5) and 2.6271(4) A] and are assignable to the triplet charge-transfer excited states from the {Cu2(micro-X)2} core to 1,8-naphthyridine.
Araki
Hiromi
H
Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.
Tsuge
Kiyoshi
K
Sasaki
Yoichi
Y
Ishizaka
Shoji
S
Kitamura
Noboru
N