An iridium(iii/iv/v) redox series featuring a terminal imido complex with triplet ground state.

The iridium(iii/iv/v) imido redox series [Ir(NBu){N(CHCHPBu)}] was synthesized and examined spectroscopically, magnetically, crystallographically and computationally. The monocationic iridium(iv) imide exhibits an electronic doublet ground state with considerable 'imidyl' character as a result of covalent Ir-NBu bonding. Reduction gives the neutral imide [Ir(NBu){N(CHCHPBu)}] as the first example of an iridium complex with a triplet ground state.

Dinitrogen Splitting Coupled to Protonation.

The coupling of electron- and proton-transfer steps provides a general concept to control the driving force of redox reactions. N splitting of a molybdenum dinitrogen complex into nitrides coupled to a reaction with Brønsted acid is reported. Remarkably, our spectroscopic, kinetic, and computational mechanistic analysis attributes N-N bond cleavage to protonation in the periphery of an amide pincer ligands rather than the {Mo-N -Mo} core.

A square-planar osmium(ii) complex.

Reduction of the pincer complex [OsCl(PNP)] (PNP = N(CHCHPtBu)) affords the isolation and full characterization of an osmium(ii) complex with square-planar coordination geometry, i.e. [OsCl(PNP)].

A Terminal Osmium(IV) Nitride: Ammonia Formation and Ambiphilic Reactivity.

Low-valent osmium nitrides are discussed as intermediates in nitrogen fixation schemes. However, rational synthetic routes that lead to isolable examples are currently unknown. Here, the synthesis of the square-planar osmium(IV) nitride [OsN(PNP)] (PNP=N(CH2 CH2 P(tBu)2 )2 ) is reported upon reversible deprotonation of osmium(VI) hydride [Os(N)H(PNP)](+) .

On the temperature dependence of H-U(iso) in the riding hydrogen model.

The temperature dependence of H-U(iso) in N-acetyl-L-4-hydroxyproline monohydrate is investigated. Imposing a constant temperature-independent multiplier of 1.2 or 1.

Children's rights and the MDGs: the right to health within Vietnam's transition towards a market economy.

In Vietnam, the transition towards a market-based economy has contributed greatly to poverty reduction, but there are also signs of rising inequalities. This article discusses the consequences of internal and external economic liberalization on children's right to health. It describes how the right of the child to adequate health care is fulfilled in Vietnam and analyzes challenges health policy-makers face during the transition.