Phosphorus dimer

Formula: P₂
Molecular weight: 61.947524
IUPAC Standard InChI: InChI=1S/P2/c1-2
IUPAC Standard InChIKey: FOBPTJZYDGNHLR-UHFFFAOYSA-N
CAS Registry Number: 12185-09-0
Chemical structure:
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Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
C_p = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.

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Temperature (K)	298. to 6000.
A	35.92198
B	1.483806
C	-0.339811
D	0.028919
E	-0.401919
F	131.5232
G	258.8557
H	143.6530
Reference	Chase, 1998
Comment	Data last reviewed in June, 1961

Temperature (K)	C_p (J/mol*K)	S° (J/mol*K)	-(G° - H°_298.15)/T (J/mol*K)	H° - H°_298.15 (kJ/mol)
298.	31.81	218.1	218.1	-0.01
300.	31.87	218.3	218.1	0.05
400.	33.95	227.8	219.4	3.36
500.	34.97	235.5	221.8	6.81
600.	35.58	241.9	224.7	10.34
700.	35.98	247.4	227.5	13.92
800.	36.28	252.2	230.3	17.53
900.	36.51	256.5	233.0	21.17
1000.	36.69	260.4	235.6	24.83
1100.	36.85	263.9	238.0	28.51
1200.	36.98	267.1	240.3	32.20
1300.	37.10	270.1	242.4	35.90
1400.	37.21	272.8	244.5	39.62
1500.	37.30	275.4	246.5	43.34
1600.	37.39	277.8	248.4	47.08
1700.	37.47	280.1	250.2	50.82
1800.	37.54	282.2	251.9	54.57
1900.	37.60	284.2	253.5	58.33
2000.	37.66	286.2	255.1	62.09
2100.	37.72	288.0	256.6	65.86
2200.	37.77	289.8	258.1	69.64
2300.	37.81	291.4	259.5	73.41
2400.	37.86	293.1	260.9	77.20
2500.	37.90	294.6	262.2	80.99
2600.	37.93	296.1	263.5	84.78
2700.	37.97	297.5	264.7	88.57
2800.	38.00	298.9	265.9	92.37
2900.	38.02	300.2	267.1	96.17
3000.	38.05	301.5	268.2	99.97
3100.	38.08	302.8	269.3	103.8
3200.	38.10	304.0	270.4	107.6
3300.	38.12	305.2	271.4	111.4
3400.	38.14	306.3	272.4	115.2
3500.	38.16	307.4	273.4	119.0
3600.	38.18	308.5	274.4	122.8
3700.	38.20	309.5	275.3	126.7
3800.	38.21	310.5	276.2	130.5
3900.	38.23	311.5	277.1	134.3
4000.	38.25	312.5	278.0	138.1
4100.	38.26	313.4	278.8	142.0
4200.	38.28	314.4	279.7	145.8
4300.	38.30	315.3	280.5	149.6
4400.	38.31	316.1	281.3	153.4
4500.	38.33	317.0	282.1	157.3
4600.	38.35	317.9	282.8	161.1
4700.	38.37	318.7	283.6	164.9
4800.	38.40	319.5	284.3	168.8
4900.	38.42	320.3	285.0	172.6
5000.	38.44	321.1	285.8	176.5
5100.	38.47	321.8	286.5	180.3
5200.	38.50	322.6	287.1	184.2
5300.	38.53	323.3	287.8	188.0
5400.	38.57	324.0	288.5	191.9
5500.	38.60	324.7	289.1	195.7
5600.	38.64	325.4	289.8	199.6
5700.	38.68	326.1	290.4	203.5
5800.	38.73	326.8	291.0	207.3
5900.	38.78	327.4	291.6	211.2
6000.	38.83	328.1	292.2	215.1

References

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), Notes

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Notes

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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