Various cationic rhenium(I) and ruthenium(II) mono- and multinuclear complexes were successfully separated by size-exclusion chromatography (SEC), using a 50:50 (v/v) mixture of methanol and acetonitrile with CH3CO2NH4 as an eluent. The logarithms of the molecular weights were accurately linear in the distribution coefficients: for linear-shaped rhenium(I) multinuclear complexes, log M(W) = -2....

We present in this study a new and one-step method allowing the preparation of an unprecedented family of stable half-lanthanidocenes. X Ray analysis shows that the isolated compounds all display the same ionic Ln-Mg bimetallic structure consisting of two anionic (Cp)Ln(BH4)3 species and one cationic Mg(THF)6 (Cp = C5Me5, Ln = Nd, 1a, Ln = La, 1b; Cp = C5H5, Ln = Nd, 2a; Cp = C5H2Ph3, Ln = Nd, ...

Structural data pertaining to bimetallic complexes with semibridging carbonyl (SBCO) ligands are analyzed using a comprehensive search of the Cambridge Structural Database (CSD). A brief review of the history of SBCO structures is presented, and this history is evaluated in light of the vastly larger dataset available today from the CSD. Additionally, computational analysis is used to reinforce...

The Front Cover shows the structures of synthesized bimetallic complexes from single-crystal X-ray diffraction analysis overlaid on a topographical map our home region near Lawrence, Kansas, implying that adventure can be found close to home. More information in Article by S. R. Kelsey et al.

A series of bimetallic zinc complexes bearing salicylaldiminato (1b-3b) or anilido-aldimine (4c-5c) ligand frameworks, in which the metal centres are separated by aliphatic spacer groups containing 3-6 methylene units, were targeted. X-Ray analysis of salicylaldiminato derivative 2b, with a 4 carbon spacer group, revealed a coordination polymer in the solid state where each zinc centre is ligat...

The insertion of ruthenium(II) into an azuliporphyrin (TPAP) has yielded carbonyl ruthenium(II) azuliporphyrin [Ru(TPAP)(CO)] featuring an equatorial CNNN set of donors. Its azulene moiety serves as the π-coordination platform to accommodate the Ru4(CO)9 cluster. This chemistry proved to be general giving rise to a series of bimetallic complexes [M(TPAP){Ru4(CO)9}] (M = Ru(CO), Ni, Pd, Pt).

Platinum phenanthroline complexes have been found to inhibit Aβ aggregation and reduce Aβ caused neurotoxicity. Our previous results revealed the synergistic roles of phenanthroline ligand and Pt(ii) coordination in the inhibition of Aβ aggregation. In this work, the reactions of PtCl2(phen) with metal bound Aβ complexes were investigated. HPLC results show that the copper coordination decrease...

In this paper, the adsorption of CO on FexCuy (x + y = 3) clusters was studied by BPW91 method, and all conceivable geometries electronic states carbonyl complexes were explored. The results show that bimetallic tend to have higher stepwise energy than corresponding pure clusters, capacity FeCu2 with is substantially larger other complexes. bond length stretching indicated significantly weakene...

Given the number of applications surrounding early transition metal cyclopentadienyl sandwich complexes, the paucity of vanadocene research is truly remarkable. This is even more surprising given their potential application as potent antitumor agents,1 paramagnetic medical MRI shift reagents,2ab Ziegler-Natta catalysts,3ab and building blocks for novel magnetic materials.4 Obviously, one of the...

The synthesis and structures of two new octadentate, Schiff-base calixpyrrole macrocycles are presented in which modifications at the meso-substituents (L(1)) or the aryl spacer between the two pyrrole-imine donor compartments (L(2)) are introduced. The outcomes of these changes are highlighted in the structures of binuclear Pacman complexes of these macrocycles, [M(2)(L(1))] and [M(2)(L(2))]. ...