3d-4f {Co(II)3Ln(OR)4} Cubanes as Bio-Inspired Water Oxidation Catalysts.

Although the {CaMn4O5} oxygen evolving complex (OEC) of photosystem II is a major paradigm for water oxidation catalyst (WOC) development, the comprehensive translation of its key features into active molecular WOCs remains challenging. The [Co(II)3Ln(hmp)4(OAc)5H2O] ({Co(II)3Ln(OR)4}; Ln = Ho-Yb, hmp = 2-(hydroxymethyl)pyridine) cubane WOC series is introduced as a new springboard to address crucial design parameters, ranging from nuclearity and redox-inactive promoters to operational stability and ligand exchange properties. The {Co(II)3Ln(OR)4} cubanes promote bioinspired WOC design by newly combining Ln(3+) centers as redox-inactive Ca(2+) analogues with flexible aqua-/acetate ligands into active and stable WOCs (max.

Closer to photosystem II: a Co4O4 cubane catalyst with flexible ligand architecture.

We introduce the novel Co4O4 complex [Co(II)4(hmp)4(μ-OAc)2(μ2-OAc)2(H2O)2] (1) (hmp = 2-(hydroxymethyl)pyridine) as the first Co(II)-based cubane water oxidation catalyst. Monodentate acetate and aqua ligands lend the flexible environment of 1 closest resemblance to photosystem II among its tetranuclear mimics to date. Visible-light-driven catalytic activity of 1 increases with pH value through aqua ligand deprotonation.

Application of a protocol "alcohol and drugs" with the Prefecture of La Spezia, Italy. Results for the year 2011 following the application of the protocol, alcohol and drugs (Sections 186/187 CDS) shared between the Prefecture of La Spezia and the ASL 5 Liguria.

This article deals with the need - which is becoming urgent considering that the crime of road murder will soon be introduced - for the health authorities to correctly and fully apply the proposed "alcohol and drugs" protocol of the highway code, in order to obtain toxicological obviousness to be used as evidence of the offence.

The structures, morphologies, and photophysical properties of multiluminescent layered lanthanide-phosphono-carboxylate nanoparticles.

A new family of layered metal(III)-phosphono-carboxylate nanostructures (M=Y, Eu, Tb, Er, and Yb) was hydrothermally synthesized and their structures and morphologies were characterized by X-ray powder diffraction and TEM. 4-[Bis(phosphonomethyl)amino]caproic acid and 4- [bis(phosphonomethyl)amino]undecanoic acid, with general formula (H(2)O(3)PCH(2))(2)NR (R=C(5)H(10)COOH(P2CAPR) and C(10)H(22)COOH(P2UND), respectively) were used as building blocks for the preparation of novel layered hybrid materials in which the inorganic layers were composed of MO(7) or MO(8) polyhedra and PO(3)C tetrahedra. The interlayer region was occupied by carboxyalkyl chains.