(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato-O,O ')(1,4,7,10,13-pentaoxapentadecane-kappa O-5)-sodium

The title compound, [Na(C5HF6O2)(C10H20O5)], contains a seven-coordinate Na + ion with an irregular coordination geometry. It is bonded to the five cro wn ether and the two beta-diketonate O atoms. The structure contains no unu sual features, the conformation of the crown ether being very similar to th ose in compounds described previously. There are no particularly short inte rmolecular contacts and the title compound behaves as a discrete molecule, which probably accounts for its relatively high volatility.