Iridium (ideal monatomic gas)	Ir(g)	Ir1(g)	Pankratz 1982 (B672)	[Formation: Ir(c) = Ir(g)]			
T(K)	Cp (J/mol*K)	S (J/mol*K)	-[G-H(Tr)]/T (J/mol*K)	H-H(Tr) (kJ/mol*K)	delta-f H (kJ/mol*K)	delta-f G (kJ/mol*K)	log Kf
298.15	20.786	193.472	193.472	0.000	665.256	618.153	-108.296
300	20.786	193.598	193.472	0.038	665.248	617.860	-107.578
400	20.820	199.581	194.288	2.117	664.796	602.128	-78.629
500	20.949	204.238	195.828	4.205	664.306	586.521	-61.273
600	21.234	208.083	197.560	6.314	663.779	571.011	-49.710
700	21.673	211.384	199.305	8.456	663.231	555.593	-41.458
800	22.234	214.313	200.999	10.652	662.679	540.255	-35.275
900	22.861	216.970	202.627	12.908	662.126	524.987	-30.469
1000	23.522	219.413	204.188	15.226	661.578	509.779	-26.628
1100	24.184	221.685	205.677	17.610	661.034	494.624	-23.488
1200	24.824	223.819	207.100	20.062	660.495	479.516	-20.872
1300	25.430	225.827	208.464	22.573	659.951	464.453	-18.662
1400	26.004	227.735	209.773	25.146	659.411	449.441	-16.769
1500	26.527	229.547	211.033	27.773	658.859	434.462	-15.129
1600	27.008	231.275	212.242	30.451	658.294	419.517	-13.696
1700	27.447	232.923	213.409	33.175	657.708	404.622	-12.432
1800	27.840	234.505	214.539	35.936	657.093	389.744	-11.310
1900	28.196	236.019	215.631	38.740	656.453	374.912	-10.307
2000	28.514	237.475	216.689	41.576	655.779	360.104	-9.405