Synthesis, structure and spectroscopic properties of two new cyanido-bridged trinuclear 9-atom molecular AgAN„CACuAN„CAAuAC„N assembly of formula [AgCuAu(CN)3(PPh3)5](H2O)2 and a dinuclear gold–copper one-dimensional coordination polymer of formula [AuCu(

Thesis

, Mohammed Jaafar a, Andrej Pevec b, Sebastiaan Akerboom c, Ali Alsalme a, Khalid Al-Farhan a, Mohamed Ghazzali a,⇑, Jan Reedijk . 2014

• نوع عمل المنشور: paper
• رابط المنشور على الويب: Inorganica Chimica Acta

مستخلص المنشور

a b s t r a c t
Two new cyanido-bridged coinage metal compounds are presented. A novel hetero trinuclear Ag–Cu–Au
compound of formula [AgCuAu(CN)3(PPh3)5](H2O)2 1 is described with bridging cyanide ligands between
the metals, and terminal phosphane ligands for Cu(I) and Ag(I). Silver is tetrahedrally coordinated by 3
phosphane ligands and a bridging cyanido ligand, copper is coordinated tetrahedrally by 2 phosphanes,
and 2 bridging cyanide ligands, whereas gold has a linear coordination by 2 cyanido-jC ligands. Under
slightly different synthetic conditions, an alternating chain compound [AuCu(CN)2(PPh3)2](H2O)2 2 was
found, isostructural with the related Ag–Cu compound. In 2, Cu(I) is tetrahedrally coordinated by 2
phosphane ligands and 2N atoms of the bridging cyanido ligand to the Au(I). The qualitative solid-state
luminescence emission intensity of 1 is reported and compared with that of the related bimetallic Au–Cu,
Ag–Cu, Ag–Ag and Ag–Au cyanido-bridged chain compounds. The luminescence of 2 was found
somewhat stronger than that of 1. The electronic molecular orbitals were calculated by DFT, where a
strong contribution of Cu(I) orbitals in HOMO/LUMO character of the two complexes is observed.