Structure and Magnetic Properties of KRuO.

The crystal structure of KRuO is refined at both 280 and 3.5 K from neutron powder data, and magnetic properties are reported for the first time. The scheelite structure, I4/a, is confirmed at both temperatures.

Order/Disorder and in Situ Oxide Defect Control in the Bixbyite Phase YPrO3+δ (0 ≤ δ < 0.5).

The YPrO3+δ system is a nearly ideal model system for the investigation of oxide defect creation and annihilation in oxide ion conductor related phases with potential applications as solid state electrolytes in solid oxide fuel cells. The formation, structure, high temperature reactivity, and magnetic susceptibility of phase pure YPrO3+δ (0 ≤ δ ≤ 0.46) are reported.

Rhodium(ii) dimers without metal-metal bonds.

Oxidation of ((Me)BDI)Rh(cyclooctene) ((Me)BDI = [2,6-Me(2)C(6)H(3)NCMe](2)CH) with Br(2) or I(2) produces paramagnetic halide-bridged Rh(II) dimers [((Me)BDI)Rh](2)(μ-X)(2) without a direct Rh-Rh bond. Steric factors are proposed to play a key role in preventing the formation of Rh-Rh bonded alternative structures.