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All results from a given calculation for Na2S (Sodium sulfide)

using model chemistry: MP4=FULL/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D*H 1ΣG
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at MP4=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-722.463400
Energy at 298.15K 
HF Energy-721.319763
Nuclear repulsion energy90.373521
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 MP4=FULL/aug-cc-pCVTZ
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 277 277        
2 Σu 425 425        
3 Πu 29i 29i        
3 Πu 29i 29i        

Unscaled Zero Point Vibrational Energy (zpe) 322.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 322.8 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 MP4=FULL/aug-cc-pCVTZ
B
0.06285

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pCVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
Na2 0.000 0.000 2.415
Na3 0.000 0.000 -2.415

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.41522.4152
Na22.41524.8305
Na32.41524.8305

picture of Sodium sulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 S1 Na3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP4=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-722.464404
Energy at 298.15K 
HF Energy-721.318816
Nuclear repulsion energy91.203519
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 MP4=FULL/aug-cc-pCVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 301 301        
2 A1 50 50        
3 B2 391 391        

Unscaled Zero Point Vibrational Energy (zpe) 370.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 370.7 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 MP4=FULL/aug-cc-pCVTZ
ABC
0.69606 0.07862 0.07064

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pCVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.656
Na2 0.000 2.160 -0.477
Na3 0.000 -2.160 -0.477

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.43882.4388
Na22.43884.3191
Na32.43884.3191

picture of Sodium sulfide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 S1 Na3 124.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability