Question

What are interstitial hydrides?

Answer 1

Hydrides

• Under certain reaction conditions, dihydrogen combines with all elements except noble gases to produce binary compounds known as hydrides.
• Hydrides are of three types that are Ionic hydrides, covalent hydrides, and Metallic or non-stoichiometric hydrides(Interstitial hydrides )

Interstitial hydrides

• Interstitial hydrides form hydrogen bonds with transition metals.
• This type of hydride is also known as metallic hydrides.
• These are formed by many f-block and d-block elements.
• Heat and electricity are conducted by these hydrides, but not as well as their parent metals do.
• This type of hydride can be nonstoichiometric, which means that the proportion of H atoms to metals is not fixed.

Examples of interstitial hydrides

${\mathrm{LaH}}_{2.87}$, ${\mathrm{YbH}}_{2.55}$, ${\mathrm{NiH}}_{0.6–0.7}$, and ${\text{PdH}}_{0.6–0.8}$ are examples of interstitial hydrides.