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 Ge2 (Germanium diatomic)

using model chemistry: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
2 1 yes D*H 1Σg

State 1 (3Σg)

Jump to S2C1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-4151.092626
Energy at 298.15K-4151.092401
HF Energy-4150.772277
Nuclear repulsion energy229.370438
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 QCISD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 303 291 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 151.3 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 145.6 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 QCISD/aug-cc-pVTZ
B
0.08172

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ge1 0.000 0.000 1.181
Ge2 0.000 0.000 -1.181

Atom - Atom Distances (Å)
  Ge1 Ge2
Ge12.3625
Ge22.3625

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

State 2 (1Σg)

Jump to S1C1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-4151.070771
Energy at 298.15K-4151.070522
HF Energy-4150.731574
Nuclear repulsion energy225.871476
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 QCISD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 283 273 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 141.7 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 136.4 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 QCISD/aug-cc-pVTZ
B
0.07925

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ge1 0.000 0.000 1.200
Ge2 0.000 0.000 -1.200

Atom - Atom Distances (Å)
  Ge1 Ge2
Ge12.3991
Ge22.3991

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