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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-132.375162
Energy at 298.15K-132.377734
HF Energy-131.927620
Nuclear repulsion energy58.044877
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/6-31G**
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 3153 2946 3.16      
2 A1 2240 2093 0.19      
3 A1 1465 1369 1.62      
4 A1 947 885 1.53      
5 E 3255 3041 1.18      
5 E 3255 3041 1.18      
6 E 1537 1437 9.16      
6 E 1537 1437 9.16      
7 E 1091 1020 1.79      
7 E 1091 1020 1.79      
8 E 364 340 0.59      
8 E 364 340 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 10149.5 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 9483.7 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 MP2=FULL/6-31G**
ABC
5.35322 0.30275 0.30275

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.187
C2 0.000 0.000 0.273
N3 0.000 0.000 1.451
H4 0.000 1.021 -1.559
H5 0.884 -0.510 -1.559
H6 -0.884 -0.510 -1.559

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45982.63801.08631.08631.0863
C21.45981.17822.09702.09702.0970
N32.63801.17823.17843.17843.1784
H41.08632.09703.17841.76771.7677
H51.08632.09703.17841.76771.7677
H61.08632.09703.17841.76771.7677

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 110.031
C2 C1 H5 110.031 C2 C1 H6 110.031
H4 C1 H5 108.906 H4 C1 H6 108.906
H5 C1 H6 108.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability