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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/daug-cc-pVDZ
 hartrees
Energy at 0K-132.427376
Energy at 298.15K-132.429900
HF Energy-131.938307
Nuclear repulsion energy57.444435
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/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 3047 3047        
2 A1 2169 2169        
3 A1 1384 1384        
4 A1 912 912        
5 E 3139 3139        
5 E 3139 3139        
6 E 1459 1459        
6 E 1459 1459        
7 E 1043 1043        
7 E 1043 1043        
8 E 349 349        
8 E 349 349        

Unscaled Zero Point Vibrational Energy (zpe) 9744.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9744.9 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 MP4/daug-cc-pVDZ
ABC
5.18656 0.29666 0.29666

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/daug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.200
C2 0.000 0.000 0.279
N3 0.000 0.000 1.464
H4 0.000 1.037 -1.574
H5 0.898 -0.518 -1.574
H6 -0.898 -0.518 -1.574

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47932.66461.10201.10201.1020
C21.47931.18532.12312.12312.1231
N32.66461.18533.21013.21013.2101
H41.10202.12313.21011.79581.7958
H51.10202.12313.21011.79581.7958
H61.10202.12313.21011.79581.7958

picture of Acetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 180.000 C2 C1 H4 109.806
C2 C1 H5 109.806 C2 C1 H6 109.806
H4 C1 H5 109.134 H4 C1 H6 109.134
H5 C1 H6 109.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability