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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2/aug-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 MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-132.383549
Energy at 298.15K-132.386084
HF Energy-131.938085
Nuclear repulsion energy57.594732
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/aug-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 3089 2962 3.72      
2 A1 2180 2091 0.00      
3 A1 1391 1334 0.58      
4 A1 931 892 1.14      
5 E 3189 3059 0.71      
5 E 3189 3059 0.71      
6 E 1466 1406 9.58      
6 E 1466 1406 9.58      
7 E 1048 1005 0.97      
7 E 1048 1005 0.97      
8 E 352 337 0.37      
8 E 352 337 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 9850.7 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 9446.8 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/aug-cc-pVDZ
ABC
5.21667 0.29850 0.29850

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.196
C2 0.000 0.000 0.275
N3 0.000 0.000 1.461
H4 0.000 1.034 -1.569
H5 0.895 -0.517 -1.569
H6 -0.895 -0.517 -1.569

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47112.65661.09911.09911.0991
C21.47111.18552.11412.11412.1141
N32.65661.18553.20113.20113.2011
H41.09912.11413.20111.79061.7906
H51.09912.11413.20111.79061.7906
H61.09912.11413.20111.79061.7906

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 109.838
C2 C1 H5 109.838 C2 C1 H6 109.838
H4 C1 H5 109.102 H4 C1 H6 109.102
H5 C1 H6 109.101
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability