The metal fragment [MH(PR3)4]+ is thus most reactive toward oxidative addition of H2 for osmium and iron, with a notably lower ability to reduce H2 for ruthenium. This trend and related properties are due to electronic rather than steric factors. All [MH3(PR3)4]+ species (1−3) are fluxional in solution.

The crystal structure of phase–II can be indexed and refined as a monoclinic system with a potential C2/c space group; the lattice constants are as follows: a = 7.34(2) Å, b = 17.26(1) Å, and unit cell volume V = 690.7(1) Å 3. Phase–III has similar diffraction patterns to phase–II, implying that the two high-pressure phases may have ...

The ribbons of hydrogen-bonded MH molecules can be regarded as supramolecular entities forming crystal structures MH1, MH2 and MH3. They are stable chemically (hydrogen transfers are unlikely) and their conformations are restricted by their symmetry and the network of hydrogen bonds.

The crystal structure of 6-chloro-3-pyridazinone (3) monohydrate, determined in this study by X-ray diffraction, is built of ribbons of hydrogen-bonded 3 and water molecules.

Motivated by the potential high temperature superconductivity in hydrogen-rich materials, high-pressure structures of ErH 3 and HoH 3 were studied by using genetic algorithm method.