Table 1. Calculated Enthalpy of Formation Per Formula Unit of Bi₂WO₆ and the Possible Limiting Phases by HSE06 Calculation^a.

compound	ΔHf (eV)	experiment
Bi2WO6	–14.98	–11.5273
Bi2O3	–5.86	–5.9576
WO2	–5.75	–6.1176
WO3	–8.32	–8.7476
CO	–0.71	–1.1476
CO2	–3.91	–4.0876
P2O5	–14.38
SO2	–3.06	–3.0876
SO3	–4.13
Bi2S3	–1.78	–1.4876
WC	–0.41
N2O5	–0.42	–0.4576

^aExperimental values at 298 K are provided for comparison (unit: eV).