return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for GaN (Gallium mononitride)

using model chemistry: CISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Π
2 1 yes C*V 1Σ

State 1 (3Π)

Jump to S2C1
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-1968.034013
Energy at 298.15K-1968.034321
HF Energy-1967.925229
Nuclear repulsion energy61.839103
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CISD/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 671 632 13.57      

Unscaled Zero Point Vibrational Energy (zpe) 335.6 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 315.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CISD/3-21G
B
0.42005

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 0.342
N2 0.000 0.000 -1.515

Atom - Atom Distances (Å)
  Ga1 N2
Ga11.8569
N21.8569

picture of Gallium mononitride state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1Σ)

Jump to S1C1
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-1967.992800
Energy at 298.15K 
HF Energy-1967.821551
Nuclear repulsion energy67.246936
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CISD/3-21G
Rotational Constants (cm-1) from geometry optimized at CISD/3-21G
B
0.42005

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 0.315
N2 0.000 0.000 -1.393

Atom - Atom Distances (Å)
  Ga1 N2
Ga11.7076
N21.7076

picture of Gallium mononitride state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability