Silylidyne

Formula: HSi
Molecular weight: 29.0934
IUPAC Standard InChI: InChI=1S/HSi/h1H
IUPAC Standard InChIKey: QHGSGZLLHBKSAH-UHFFFAOYSA-N
CAS Registry Number: 13774-94-2
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 (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 1400.	1400. to 6000.
A	5.628892	9.030290
B	3.206100	0.058574
C	-0.645540	-0.002209
D	-0.123228	0.004993
E	0.059737	-1.137600
F	88.41030	85.16511
G	53.55559	55.76370
H	90.02450	90.02450
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in December, 1976	Data last reviewed in December, 1976

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.	7.20	47.33	47.33	-0.00
300.	7.19	47.38	47.33	0.01
400.	7.17	49.44	47.61	0.73
500.	7.29	51.05	48.15	1.45
600.	7.46	52.40	48.75	2.19
700.	7.64	53.56	49.35	2.94
800.	7.81	54.59	49.94	3.72
900.	7.98	55.52	50.51	4.51
1000.	8.13	56.37	51.06	5.31
1100.	8.26	57.15	51.57	6.13
1200.	8.38	57.87	52.07	6.96
1300.	8.47	58.55	52.54	7.81
1400.	8.54	59.18	52.99	8.66

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)
1400.	8.54	59.18	52.99	8.66
1500.	8.62	59.77	53.43	9.51
1600.	8.69	60.33	53.84	10.38
1700.	8.75	60.86	54.24	11.25
1800.	8.81	61.36	54.62	12.13
1900.	8.85	61.84	54.99	13.01
2000.	8.89	62.29	55.34	13.90
2100.	8.93	62.73	55.68	14.79
2200.	8.97	63.14	56.01	15.69
2300.	9.00	63.54	56.33	16.59
2400.	9.03	63.93	56.64	17.49
2500.	9.06	64.29	56.94	18.39
2600.	9.09	64.65	57.23	19.30
2700.	9.11	64.99	57.51	20.21
2800.	9.14	65.33	57.78	21.12
2900.	9.17	65.65	58.05	22.04
3000.	9.19	65.96	58.31	22.96
3100.	9.22	66.26	58.56	23.88
3200.	9.25	66.55	58.80	24.80
3300.	9.27	66.84	59.04	25.73
3400.	9.30	67.12	59.28	26.65
3500.	9.33	67.39	59.50	27.59
3600.	9.36	67.65	59.73	28.52
3700.	9.39	67.91	59.94	29.46
3800.	9.42	68.16	60.16	30.40
3900.	9.45	68.40	60.37	31.34
4000.	9.48	68.64	60.57	32.29
4100.	9.51	68.88	60.77	33.24
4200.	9.54	69.11	60.96	34.19
4300.	9.58	69.33	61.16	35.15
4400.	9.61	69.55	61.34	36.10
4500.	9.65	69.77	61.53	37.07
4600.	9.69	69.98	61.71	38.03
4700.	9.72	70.19	61.89	39.00
4800.	9.76	70.39	62.06	39.98
4900.	9.80	70.59	62.24	40.96
5000.	9.85	70.79	62.41	41.94
5100.	9.89	70.99	62.57	42.93
5200.	9.94	71.18	62.74	43.92
5300.	9.98	71.37	62.90	44.91
5400.	10.03	71.56	63.06	45.91
5500.	10.08	71.74	63.21	46.92
5600.	10.13	71.92	63.37	47.93
5700.	10.18	72.10	63.52	48.95
5800.	10.24	72.28	63.67	49.97
5900.	10.29	72.46	63.81	50.99
6000.	10.35	72.63	63.96	52.02

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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