A series of sandwich-shaped complexes based on two square tetranuclear Ag(I) metallomacrocycles, [[Ag4(pprd)4]2(XF6)]-(BF4)6.8MeNO2 (pprd = 4-(2-pyridyl)pyrimidine; X = Si, Ge and Sn), in which a XF6(2-) anion is encapsulated, were prepared and their structures were characterized both in the solid state and solution.

Reaction of the C(3)-symmetric triazine bridged tris(benzene-o-dithiol) ligand H(6)-1 with Ti(4+) leads to the unexpected formation of the dinuclear complex (Me(3)PhN)(4)[Ti(2)(1)(2)] while other C(3)-symmetric ligands are reported to form either mono- or tetranuclear complexes.

The synthesis and characterisation of two novel tetranuclear and thermally-stable lithium arylcuprates, [Cu(2)Li(2)Mes(4)] and [Cu(3)LiMes(4)], are reported and [Cu(3)LiMes(4)] is shown to be a highly active promoter for the 1,4-addition of organolithiums to enones.

An unusual triply-bridging cyclopentadienyl (C(5)H(5) = Cp) ligand has been characterised in the tetranuclear palladium cluster [Pd(3)(II)(μ-OAc)(4)(μ(3)-Cp)Pd(0)(η(5)-Cp)] (1). It is coordinated in the μ(3)-η(1):η(2):η(2) mode to a [Pd(3)](4+) triangular subunit of the mixed-valence cluster 1.

Metal-azide-metal-acetylide cycloaddition (iClick) reactions to synthesize heterotrimetallics and an unexpected novel tetranuclear gold(I) complex, are described. In addition, a discussion regarding the connection between traditional azide-alkyne cycloaddition reactions and iClick is presented focusing on applications towards linking multiple metal ions.

Tetranuclear copper-iodide cluster consisting of a {Cu4I4} cubane and diphenylphosphine ligand has been found as highly stable precursor for further post-functionalization through hydrophosphination reaction. UV irradiation the in presence various alkenes allows direct functionalization latter, giving access to wide range copper complexes, source molecular diversity luminescent materials. Such ...

The tetranuclear complexes [M4(mu-PyS2)2(diolefin)4] [PyS2 = 2,6-pyridinedithiolate; M = Rh, diolefin = cod (1,5-cyclooctadiene) (1), tfbb (tetrafluorobenzo[5,6]bicyclo[2.2.2]octa-2,5,7-triene) (2); M = Ir, diolefin = cod (3), tfbb (4)] exhibit two one-electron oxidations at a platinum disk electrode in dichloromethane at potentials accessible by chemical reagents. The rhodium tetranuclear comp...

The reaction of vanadium(III) trichloride with tert-butylphosphonic acid (t-BuPO3H2) in the presence of 1,10-phenanthroline/2,2'-bipyridine as an ancillary ligand in acetonitrile at room temperature afforded two dinuclear dicationic vanadium(IV) complexes [(VO)2(phen)2{t-BuPO2(OH)}2(OH2)2]·2Cl [1] and [(VO)2(bipy)2{t-BuPO2(OH)}2(OH2)2]·2Cl [2]. On the other hand, when the reaction was carried o...

Trinuclear copper(I) and silver(I) pyrazolates {[3,5-(CF3)2Pz]M}3 (M = Cu and Ag) react with pyridazine to give neutral, tetranuclear metallacycles with a para-cyclophane core whereas benzo[c]cinnoline fails to break the cyclic pyrazolate trimers under similar conditions, and affords a metalla-propellane featuring both two- and three-coordinate metal sites.

The X-ray crystallographic characterization and solid state photoluminescence (PL) study of three new tetranuclear copper(I) clusters, [Cu4(O2CR)4], R = (3-F)C6H4 (1), (2,3,4-F)3C6H2 (2), and CF3/C6F5 (3), revealed a dependence of PL on the structural type.