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

using model chemistry: B2PLYP=FULLultrafine/3-21G

19 10 17 12 22

States and conformations

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

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-718.453254
Energy at 298.15K 
HF Energy-718.428273
Nuclear repulsion energy90.361868
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 B2PLYP=FULLultrafine/3-21G
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 0.00 571.16 0.08 0.15
2 Σu 428 428 105.54 0.00 0.00 0.00
3 Πu 14i 14i 55.35 0.00 0.47 0.64
3 Πu 14i 14i 55.35 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 339.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 339.7 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 B2PLYP=FULLultrafine/3-21G
B
0.06283

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

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 2.416
Na3 0.000 0.000 -2.416

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.41572.4157
Na22.41574.8314
Na32.41574.8314

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 B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-718.453653
Energy at 298.15K 
HF Energy-718.426908
Nuclear repulsion energy90.652494
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 B2PLYP=FULLultrafine/3-21G
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 292 292 3.08 625.28 0.08 0.15
2 A1 40 40 34.42 18.74 0.75 0.86
3 B2 388 388 81.10 13.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 360.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 360.2 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 B2PLYP=FULLultrafine/3-21G
ABC
0.70268 0.07731 0.06964

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.653
Na2 0.000 2.178 -0.475
Na3 0.000 -2.178 -0.475

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.45252.4525
Na22.45254.3555
Na32.45254.3555

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 125.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability