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

using model chemistry: MP2=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 MP2=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-722.422908
Energy at 298.15K 
HF Energy-721.319746
Nuclear repulsion energy90.470544
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 MP2=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 279 279 0.00      
2 Σu 427 427 123.79      
3 Πu 24i 24i 74.46      
3 Πu 24i 24i 74.46      

Unscaled Zero Point Vibrational Energy (zpe) 328.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 328.5 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 MP2=FULL/aug-cc-pCVTZ
B
0.06298

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=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 2.413
Na3 0.000 0.000 -2.413

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.41282.4128
Na22.41284.8256
Na32.41284.8256

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 MP2=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-722.423545
Energy at 298.15K 
HF Energy-721.319078
Nuclear repulsion energy91.187502
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 MP2=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 300 300 15.20      
2 A1 45 45 42.89      
3 B2 399 399 100.09      

Unscaled Zero Point Vibrational Energy (zpe) 372.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 372.0 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 MP2=FULL/aug-cc-pCVTZ
ABC
0.81034 0.07620 0.06965

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pCVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.608
Na2 0.000 2.193 -0.442
Na3 0.000 -2.193 -0.442

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.43202.4320
Na22.43204.3870
Na32.43204.3870

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 128.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability