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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: TPSSh/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 TPSSh/6-31G*
 hartrees
Energy at 0K-132.759735
Energy at 298.15K-132.762327
HF Energy-132.759735
Nuclear repulsion energy58.185770
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/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 3067 2943 4.12 140.38 0.00 0.00
2 A1 2354 2258 6.96 48.81 0.30 0.46
3 A1 1443 1384 1.89 14.31 0.60 0.75
4 A1 931 893 1.76 3.61 0.19 0.32
5 E 3145 3017 2.89 72.91 0.75 0.86
5 E 3145 3017 2.89 72.92 0.75 0.86
6 E 1513 1452 9.44 17.45 0.75 0.86
6 E 1513 1452 9.44 17.45 0.75 0.86
7 E 1077 1033 2.43 0.10 0.75 0.86
7 E 1077 1033 2.43 0.10 0.75 0.86
8 E 381 366 0.34 4.02 0.75 0.86
8 E 381 366 0.34 4.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10014.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9607.5 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/6-31G*
ABC
5.28340 0.30446 0.30446

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
C2 0.000 0.000 0.280
N3 0.000 0.000 1.444
H4 0.000 1.027 -1.561
H5 0.890 -0.514 -1.561
H6 -0.890 -0.514 -1.561

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46302.62731.09441.09441.0944
C21.46301.16432.10762.10762.1076
N32.62731.16433.17533.17533.1753
H41.09442.10763.17531.77931.7793
H51.09442.10763.17531.77931.7793
H61.09442.10763.17531.77931.7793

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 110.166
C2 C1 H5 110.166 C2 C1 H6 110.166
H4 C1 H5 108.768 H4 C1 H6 108.768
H5 C1 H6 108.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.555      
2 C 0.369      
3 N -0.477      
4 H 0.221      
5 H 0.221      
6 H 0.221      


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 -3.819 3.819
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 2.602 0.000 0.000
y 0.000 2.602 0.000
z 0.000 0.000 5.131


<r2> (average value of r2) Å2
<r2> 45.324
(<r2>)1/2 6.732