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

using model chemistry: CCSD(T)/daug-cc-pVDZ

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 CCSD(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-721.477772
Energy at 298.15K 
HF Energy-721.296535
Nuclear repulsion energy88.452212
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 CCSD(T)/daug-cc-pVDZ
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 264 264        
2 Σu 403 403        
3 Πu 56i 56i        
3 Πu 56i 56i        

Unscaled Zero Point Vibrational Energy (zpe) 277.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 277.0 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 CCSD(T)/daug-cc-pVDZ
B
0.06021

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/daug-cc-pVDZ

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 2.468
Na3 0.000 0.000 -2.468

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.46772.4677
Na22.46774.9354
Na32.46774.9354

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 CCSD(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-721.479860
Energy at 298.15K 
HF Energy-721.296348
Nuclear repulsion energy89.659865
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 CCSD(T)/daug-cc-pVDZ
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 291 291        
2 A1 48 48        
3 B2 370 370        

Unscaled Zero Point Vibrational Energy (zpe) 354.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 354.4 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 CCSD(T)/daug-cc-pVDZ
ABC
0.58985 0.07839 0.06920

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.713
Na2 0.000 2.163 -0.518
Na3 0.000 -2.163 -0.518

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.48842.4884
Na22.48844.3252
Na32.48844.3252

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 120.699
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