2,4,6,8,9,10-hexaoxa-1,3,5,7-tetraphosphatricyclo[3.3.1.13,7]decane

Formula: O₆P₄
Molecular weight: 219.8914
CAS Registry Number: 12440-00-5
Information on this page:
Other data available:
- Gas phase thermochemistry data
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.

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Temperature (K)	298. to 600.	600. to 6000.
A	2.126201	54.60050
B	173.9760	0.714429
C	-226.3130	-0.168113
D	108.9790	0.013028
E	-0.210358	-2.540792
F	-536.5210	-553.4601
G	41.22519	135.8800
H	-529.2330	-529.2330
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in December, 1962	Data last reviewed in December, 1962

Temperature (K)	C_p (cal/mol*K)	S° (cal/mol*K)	-(G° - H°_298.15)/T (cal/mol*K)	H° - H°_298.15 (kcal/mol)
298.	34.39	82.59	82.61	-0.01
300.	34.56	82.82	82.61	0.06
400.	41.17	93.74	84.05	3.88
500.	45.32	103.4	86.98	8.22
600.	47.99	111.9	90.44	12.89

Temperature (K)	C_p (cal/mol*K)	S° (cal/mol*K)	-(G° - H°_298.15)/T (cal/mol*K)	H° - H°_298.15 (kcal/mol)
600.	47.91	111.9	90.44	12.88
700.	49.84	119.5	94.06	17.78
800.	51.10	126.2	97.66	22.83
900.	51.98	132.3	101.2	27.99
1000.	52.62	137.8	104.6	33.22
1100.	53.10	142.8	107.8	38.51
1200.	53.47	147.5	110.9	43.84
1300.	53.77	151.8	113.9	49.20
1400.	54.01	155.7	116.8	54.59
1500.	54.21	159.5	119.5	60.00
1600.	54.37	163.0	122.1	65.43
1700.	54.51	166.3	124.6	70.87
1800.	54.63	169.4	127.0	76.33
1900.	54.74	172.4	129.3	81.80
2000.	54.83	175.2	131.5	87.28
2100.	54.90	177.8	133.7	92.76
2200.	54.97	180.4	135.7	98.26
2300.	55.03	182.8	137.7	103.8
2400.	55.09	185.2	139.7	109.3
2500.	55.13	187.4	141.5	114.8
2600.	55.17	189.6	143.3	120.3
2700.	55.21	191.7	145.1	125.8
2800.	55.24	193.7	146.8	131.3
2900.	55.27	195.6	148.4	136.9
3000.	55.30	197.5	150.0	142.4
3100.	55.32	199.3	151.6	147.9
3200.	55.34	201.1	153.1	153.5
3300.	55.36	202.8	154.6	159.0
3400.	55.38	204.4	156.0	164.5
3500.	55.39	206.0	157.5	170.1
3600.	55.41	207.6	158.8	175.6
3700.	55.42	209.1	160.2	181.1
3800.	55.43	210.6	161.5	186.7
3900.	55.44	212.0	162.7	192.2
4000.	55.44	213.4	164.0	197.8
4100.	55.45	214.8	165.2	203.3
4200.	55.46	216.1	166.4	208.9
4300.	55.46	217.5	167.6	214.4
4400.	55.47	218.7	168.7	220.0
4500.	55.47	220.0	169.9	225.5
4600.	55.48	221.2	171.0	231.1
4700.	55.48	222.4	172.0	236.6
4800.	55.49	223.6	173.1	242.1
4900.	55.49	224.7	174.1	247.7
5000.	55.50	225.8	175.2	253.2
5100.	55.50	226.9	176.2	258.8
5200.	55.51	228.0	177.2	264.3
5300.	55.51	229.1	178.1	269.9
5400.	55.52	230.1	179.1	275.4
5500.	55.53	231.1	180.0	281.0
5600.	55.54	232.1	180.9	286.6
5700.	55.55	233.1	181.8	292.1
5800.	55.56	234.1	182.7	297.7
5900.	55.57	235.0	183.6	303.2
6000.	55.58	235.9	184.5	308.8

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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