Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):
642 (g)
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-98
Encyclopedia of inorganic chemistry. - editor R. Bruce King, 2 Ed., 10 volume set. - 2005
Huston J. L. Chemical and physical properties of some xenon compounds / Inorganic Chemistry. - 1982. - Vol. 21, No. 2. - pp. 687 [DOI: 10.1021/ic00132a043]