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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBE1PBE/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 PBE1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-132.607134
Energy at 298.15K-132.609721
HF Energy-132.607134
Nuclear repulsion energy58.389464
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 PBE1PBE/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 3073 2955 2.23 196.07 0.00 0.01
2 A1 2385 2294 12.68 77.31 0.17 0.29
3 A1 1374 1322 2.60 5.31 0.43 0.60
4 A1 954 918 1.17 5.72 0.05 0.10
5 E 3167 3045 0.26 57.52 0.75 0.86
5 E 3167 3045 0.26 57.51 0.75 0.86
6 E 1438 1383 11.36 5.16 0.75 0.86
6 E 1438 1383 11.36 5.16 0.75 0.86
7 E 1034 994 2.22 0.12 0.75 0.86
7 E 1034 994 2.22 0.12 0.75 0.86
8 E 377 363 0.41 1.57 0.75 0.86
8 E 377 363 0.41 1.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9909.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 9528.6 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 PBE1PBE/aug-cc-pVDZ
ABC
5.24424 0.30742 0.30742

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.178
C2 0.000 0.000 0.277
N3 0.000 0.000 1.437
H4 0.000 1.031 -1.552
H5 0.893 -0.516 -1.552
H6 -0.893 -0.516 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45502.61431.09701.09701.0970
C21.45501.15932.10002.10002.1000
N32.61431.15933.16163.16163.1616
H41.09702.10003.16161.78591.7859
H51.09702.10003.16161.78591.7859
H61.09702.10003.16161.78591.7859

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 109.959
C2 C1 H5 109.959 C2 C1 H6 109.959
H4 C1 H5 108.979 H4 C1 H6 108.979
H5 C1 H6 108.980
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.441      
2 C -0.078      
3 N -0.323      
4 H -0.013      
5 H -0.013      
6 H -0.013      


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 -4.061 4.061
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.645 0.000 0.000
y 0.000 -17.645 0.000
z 0.000 0.000 -20.838
Traceless
 xyz
x 1.596 0.000 0.000
y 0.000 1.596 0.000
z 0.000 0.000 -3.193
Polar
3z2-r2-6.385
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.572 0.000 0.000
y 0.000 3.572 0.000
z 0.000 0.000 6.006


<r2> (average value of r2) Å2
<r2> 45.332
(<r2>)1/2 6.733