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aluminium nitride


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Constants of diatomic molecules, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Deltafgas125.00kcal/molReviewChase, 1998Data last reviewed in December, 1979
Quantity Value Units Method Reference Comment
gas,1 bar54.613cal/mol*KReviewChase, 1998Data last reviewed in December, 1979

Gas Phase Heat Capacity (Shomate Equation)

Cp° = 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
    Cp = 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. - 6000.
A 8.655581
B 0.349458
C -0.067816
D 0.008077
E -0.094963
F 122.0860
G 64.45270
H 125.0000
ReferenceChase, 1998
Comment Data last reviewed in December, 1979

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Deltafsolid-75.999kcal/molReviewChase, 1998Data last reviewed in December, 1979
Quantity Value Units Method Reference Comment
solid4.814cal/mol*KReviewChase, 1998Data last reviewed in December, 1979

Solid Phase Heat Capacity (Shomate Equation)

Cp° = 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
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 900.900. - 3000.
A 4.11870011.89860
B 20.468000.534906
C -19.90270-0.177343
D 7.0827610.021021
E -0.128569-0.672324
F -78.40791-81.57679
G 3.79306915.94290
H -76.00010-76.00010
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1979 Data last reviewed in December, 1979

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through December, 1975

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 27Al14N
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 3Pii 1    [0.5811] 2 3   [0.00000139]  [1.7739] A rarrow X V 19727.37 Z
missing citation
(X) 3Pii 0 4 5 [746.93] Z   0.5730 2 0.0056  [0.00000136]  1.7864  

Notes

1A0 = -23.0
2All lines in the 3Pi2 - 3Pi2 and high J lines in the 3Pi0 - 3Pi1 subbands are broad (~0.15 cm-1), probably on account of unresolved nuclear hyperfine structure.
3Predissociation near J=48.
4A0 = -33.0, A1= -34.5.
5Not certain that this is the ground state.

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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 thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, References