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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B1B95/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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-132.707348
Energy at 298.15K-132.709933
HF Energy-132.707348
Nuclear repulsion energy58.487597
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 B1B95/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 3083 2953 2.51 194.52 0.00 0.01
2 A1 2391 2291 12.29 75.51 0.17 0.29
3 A1 1376 1319 2.06 5.22 0.43 0.60
4 A1 953 913 1.30 5.78 0.06 0.11
5 E 3175 3041 0.42 57.74 0.75 0.86
5 E 3175 3041 0.42 57.74 0.75 0.86
6 E 1441 1380 10.80 5.25 0.75 0.86
6 E 1441 1380 10.80 5.25 0.75 0.86
7 E 1034 991 2.04 0.10 0.75 0.86
7 E 1034 991 2.04 0.10 0.75 0.86
8 E 376 361 0.45 1.56 0.75 0.86
8 E 376 361 0.45 1.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9927.9 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 9509.9 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 B1B95/aug-cc-pVDZ
ABC
5.27081 0.30829 0.30829

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.176
C2 0.000 0.000 0.277
N3 0.000 0.000 1.434
H4 0.000 1.029 -1.549
H5 0.891 -0.514 -1.549
H6 -0.891 -0.514 -1.549

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45372.61081.09411.09411.0941
C21.45371.15702.09652.09652.0965
N32.61081.15703.15623.15623.1562
H41.09412.09653.15621.78141.7814
H51.09412.09653.15621.78141.7814
H61.09412.09653.15621.78141.7814

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 109.940
C2 C1 H5 109.940 C2 C1 H6 109.940
H4 C1 H5 108.998 H4 C1 H6 108.998
H5 C1 H6 108.998
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.597      
2 C -0.148      
3 N -0.262      
4 H -0.062      
5 H -0.062      
6 H -0.062      


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 -4.036 4.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.597 0.000 0.000
y 0.000 -17.597 0.000
z 0.000 0.000 -20.798
Traceless
 xyz
x 1.601 0.000 0.000
y 0.000 1.601 0.000
z 0.000 0.000 -3.201
Polar
3z2-r2-6.403
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 3.554 0.000 0.000
y 0.000 3.554 0.000
z 0.000 0.000 5.976


<r2> (average value of r2) Å2
<r2> 45.201
(<r2>)1/2 6.723