Umakoshi Keisuke, Saito Keizo, Arikawa Yasuhiro, Onishi Masayoshi, Ishizaka Shoji, Kitamura Noboru, Nakao Yoshihide, Sakaki Shigeyoshi
Department of Applied Chemistry, Faculty of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan.
Chemistry. 2009;15(17):4238-42. doi: 10.1002/chem.200900290.
Swap the coins! The Pt(2)Au(2), Pt(2)Au(2)Cu(2), and Pt(2)Au(2)Ag(2) complexes of 3,5-dimethylpyrazolate exhibit yellow-green, orange, and sky-blue luminescence, respectively (see figure). The emission energies of Pt(2)Au(2)M(2) complexes can be controlled by the change of the third coinage metal ions M. The Pt(2)Au(2)M(2) complexes take the cis configuration with respect to the Au(2)M(2) plane.