decahydrogenated

Decahydrogenated is a chemical descriptor used to indicate that a molecule has lost ten hydrogen atoms relative to a reference hydrogen-saturated state. The term is most commonly applied in organic chemistry and materials science to describe a degree of dehydrogenation, which increases unsaturation and can significantly affect structure and reactivity. The exact structural outcome of decahydrogenation depends on the parent framework; in general, removing ten hydrogens from a saturated hydrocarbon would yield a highly unsaturated species, potentially involving multiple double bonds, rings, or radical centers, and may be unstable without stabilization or additional bonding.

In practice, decahydrogenation can be achieved by thermal, catalytic, electrochemical, or photochemical methods. Catalysts such as transition metals facilitate stepwise removal of hydrogen, while high-temperature processes can drive dehydrogenation on carbonaceous materials. In hydrogen storage research, decahydrogenated forms may be discussed when describing reversible removal of hydrogen during discharge or desorption.

Quantitative use: the designation implies a stoichiometric removal of ten hydrogen atoms from a well-defined parent compound, and does not alone specify the exact connectivity; the resulting structure must be defined by experimental or computational characterization.

The term complements the broader language of dehydrogenation and dehydrogenated materials and is used to convey the level of hydrogen loss in a given system.