Bis(2,2′-bipyridine)(pyridin-2-olato)ruthenium(II) hexa­fluorido­phosphate benzene hemisolvate

In the title compound, [Ru(C5H4NO)(C10H8N2)2]PF6·0.5C6H6, the Ru2+ cation has a distorted octa­hedral RuN5O coordination environment. This complex is more distorted than the closely related ruthenium complex containing a pyridine-2-thiol­ate ligand [Santra et al. (1997 ▶). J. Chem. Soc. Dalton Trans. pp. 1387–1393]. The distortion is caused by the difference in size between the O and S atoms. The benzene solvent mol­ecule is situated on a twofold rotation axis

Extension of the operational regime of the LHD towards a deuterium experiment

As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of the best performance of hydrogen plasma was intensively performed in the large helical device. High ion and electron temperatures, Ti and Te, of more than 6 keV were simultaneously achieved by superimposing high-power electron cyclotron resonance heating onneutral beam injection (NBI) heated plasma. Although flattening of the ion temperature profile in the core region was observed during the discharges, one could avoid degradation by increasing the electron density. Another key parameter to present plasma performance is an averaged beta value $\left\langle \beta \right\rangle$ . The high $\left\langle \beta \right\rangle$ regime around 4% was extended to an order of magnitude lower than the earlier collisional regime. Impurity behaviour in hydrogen discharges with NBI heating was also classified with a wide range of edge plasma parameters. The existence of a no impurity accumulation regime, where the high performance plasma is maintained with high power heating  >10 MW, was identified. Wide parameter scan experiments suggest that the toroidal rotation and the turbulence are the candidates for expelling impurities from the core region

Bis[(5-bromopyridin-2-yl)methanolato-κ2N,O]copper(II) monohydrate

In the title compound, [Cu(C6H5BrNO)2]·H2O, the CuII ion has a square-planer N2O2 coordination environment. Slipped π–π stackings [centroid-centroid distances: 3.625 (3), 3.767 (3), 3.935 (3) and 4.255 (3) Å] between pyridine rings and Cu...π interactions (centroid-to-CuII distance: 3.56 Å) between Cu2+ ions and pyridine rings lead to a layered arrangement parallel to (010). Intermolecular Br...O interactions [Br...O distances: 2.904 (3) and 3.042 (3) Å] and O—H...O hydrogen bonds form a three-dimensional network structure

Tris(pyridin-2-ylmethanol)nickel(II) hexafluoridophosphate trifluoroacetate

In the crystal structure of the title complex, [Ni(C6H7NO)3](PF6)(C2F3O2), the NiII ion is in a slightly distorted octahedral NiO3N3 coordination geometry with each of the three N and three O atoms in a meridional coordination. In the crystal, the complex molecules and the trifluoroacetate anions are connected via O—H...O hydrogen bonding into layers parallel to the ab plane