Lanthanum acetylacetonate refers to the coordination complex with the formula La(C5H7O2)3.

This behavior is also observed for erbium, yttrium, gadolinium, and europium.

[4] The instability constants (logYn) are 3.65, 5.13 and 6.12 (corresponding to n=1, 2, 3) have been reported for "La(acac)3".

[5] It can be prepared by the reaction of lanthanum alkoxide and acetylacetone.

[6] Its tetrahydrate decomposes into monohydrate at 110 °C, obtains the anhydrous form at 150 °C, undergoes La(CH3COO)(acac)2 and La(CH3COO)2(acac), and at 180~285 °C lanthanum acetate is produced.