Dicarbide lutetium

• Heating stoichiometric amounts of pure substances:

${\displaystyle \mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">L</span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">u</span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">+</span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">2</span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">C</span></span>}\stackrel{{\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">2230</span></span>}}^{\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">o</span></span>}}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">C</span></span>}}{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">\to </span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">L</span></span>}\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">u</span></span>}{\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">C</span></span>}}_{\mathsf{<span\; class="mwe-math-element"><span\; class="mwe-math-mathml-inline\; mwe-math-mathml-a11y"\; style="display:\; none;">2</span></span>}}}${\ displaystyle {\ mathsf {Lu + 2C \ {\ xrightarrow {2230 ^ {o} C}} \ LuC_ {2}}}}  

Lutetium dicarbide forms yellow tetragonal crystals, space group I 4 / mmm , cell parameters a = 0.3563 nm, c = 0.5964 nm.

At ≈1500 ° C, a transition occurs to the cubic phase, the space group F m3m , cell parameters a = 0.5505 nm.

• Reacts with water, releasing various hydrocarbons , mainly acetylene .

• Chemistry and Technology of Rare and Scattered Elements, Part II / Ed. K.A. Bolshakov. - M .: Higher. School, 1976. - 360 p.
• State diagrams of double metal systems / Ed. N. P. Lyakishev. - M .: Mashinostroenie, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .