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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: TPSSh/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-132.806494
Energy at 298.15K-132.809088
HF Energy-132.806494
Nuclear repulsion energy58.507522
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 TPSSh/TZVP
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 3049 2938 3.72 174.28 0.00 0.00
2 A1 2348 2263 8.29 63.31 0.23 0.38
3 A1 1417 1366 2.41 8.33 0.58 0.73
4 A1 926 892 1.38 3.66 0.11 0.20
5 E 3123 3009 1.93 65.81 0.75 0.86
5 E 3123 3009 1.93 65.81 0.75 0.86
6 E 1488 1434 11.09 10.11 0.75 0.86
6 E 1488 1434 11.09 10.11 0.75 0.86
7 E 1064 1025 1.42 0.02 0.75 0.86
7 E 1064 1025 1.42 0.02 0.75 0.86
8 E 378 364 0.12 4.66 0.75 0.86
8 E 378 364 0.12 4.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9921.9 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 9561.8 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 TPSSh/TZVP
ABC
5.29986 0.30804 0.30804

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.177
C2 0.000 0.000 0.279
N3 0.000 0.000 1.434
H4 0.000 1.026 -1.551
H5 0.888 -0.513 -1.551
H6 -0.888 -0.513 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45652.61171.09171.09171.0917
C21.45651.15522.09812.09812.0981
N32.61171.15523.15683.15683.1568
H41.09172.09813.15681.77651.7765
H51.09172.09813.15681.77651.7765
H61.09172.09813.15681.77651.7765

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 110.021
C2 C1 H5 110.021 C2 C1 H6 110.021
H4 C1 H5 108.915 H4 C1 H6 108.915
H5 C1 H6 108.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.371      
2 C 0.022      
3 N -0.112      
4 H 0.153      
5 H 0.153      
6 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.974 3.974
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.996 0.000 0.000
y 0.000 2.996 0.000
z 0.000 0.000 5.644


<r2> (average value of r2) Å2
<r2> 45.192
(<r2>)1/2 6.722