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

using model chemistry: QCISD/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 QCISD/aug-cc-pCVTZ
 hartrees
Energy at 0K-721.537526
Energy at 298.15K 
HF Energy-721.319770
Nuclear repulsion energy89.592761
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-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 278 278 0.00      
2 Σu 424 424 127.35      
3 Πu 26i 26i 79.15      
3 Πu 26i 26i 79.15      

Unscaled Zero Point Vibrational Energy (zpe) 324.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 324.9 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 QCISD/aug-cc-pCVTZ
B
0.06176

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 2.436
Na3 0.000 0.000 -2.436

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.43642.4364
Na22.43644.8728
Na32.43644.8728

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 QCISD/aug-cc-pCVTZ
 hartrees
Energy at 0K-721.537958
Energy at 298.15K 
HF Energy-721.319288
Nuclear repulsion energy90.181180
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-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 295 295 14.88      
2 A1 39 39 50.86      
3 B2 401 401 106.63      

Unscaled Zero Point Vibrational Energy (zpe) 367.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 367.1 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-pCVTZ
ABC
0.96700 0.07210 0.06710

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.557
Na2 0.000 2.255 -0.405
Na3 0.000 -2.255 -0.405

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.45142.4514
Na22.45144.5101
Na32.45144.5101

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 133.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability