Intramolecular d10-d10 interactions in heterometallic clusters of the transition metals.

Weak attractive interactions between closed shell metal ions have been increasingly studied in the last few years and are generally designated as metallophilic interactions. They are best evidenced in the solid state where structural data obtained by X-ray diffraction provide precise information about the distance between the metals involved. The strength of such metal-metal interactions has been compared to that of hydrogen bonding (ca.

Heterometallic chains and clusters with gold-transition metal bonds: synthesis and interconversion.

Anionic, metal-metal bonded heterotrinuclear chain complexes of the type [M{MoCp(CO)(3)}(2)](-) with M = Cu(I), Ag(I), and Au(I) have been prepared by reaction between a d(10) metal precursor complex and the carbonylmetalate [MoCp(CO)(3)](-). These complexes have been structurally characterized by X-ray diffraction and used as precursors to neutral 2-D hexa- or octanuclear mixed-metal clusters of the general formula [MMoCp(CO)(3)](n) (M = Cu, n = 3; M = Ag or Au, n = 4), which are characterized by a central core constituted of interacting d(10) metal ions, surrounded by the molybdenum atoms. When M = Cu, the six metal atoms form a nu(2)-triangular core whereas when M = Ag or Au, a nu(2)-square structure is observed for the octanuclear metal core.