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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3PW91/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 B3PW91/TZVP
 hartrees
Energy at 0K-132.746429
Energy at 298.15K-132.749035
HF Energy-132.746429
Nuclear repulsion energy58.675343
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 B3PW91/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 3060 2951 2.43 172.48 0.00 0.00
2 A1 2383 2298 11.01 64.97 0.24 0.38
3 A1 1406 1356 4.74 7.69 0.60 0.75
4 A1 941 908 1.20 3.39 0.10 0.19
5 E 3139 3027 0.59 63.27 0.75 0.86
5 E 3139 3027 0.59 63.27 0.75 0.86
6 E 1470 1417 12.85 9.58 0.75 0.86
6 E 1470 1417 12.85 9.58 0.75 0.86
7 E 1056 1019 2.57 0.01 0.75 0.86
7 E 1056 1019 2.57 0.01 0.75 0.86
8 E 384 371 0.18 4.66 0.75 0.86
8 E 384 371 0.18 4.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9944.5 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 9589.5 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 B3PW91/TZVP
ABC
5.31134 0.31006 0.31006

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.173
C2 0.000 0.000 0.279
N3 0.000 0.000 1.430
H4 0.000 1.025 -1.548
H5 0.887 -0.512 -1.548
H6 -0.887 -0.512 -1.548

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45112.60231.09131.09131.0913
C21.45111.15122.09452.09452.0945
N32.60231.15123.14923.14923.1492
H41.09132.09453.14921.77461.7746
H51.09132.09453.14921.77461.7746
H61.09132.09453.14921.77461.7746

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 110.134
C2 C1 H5 110.134 C2 C1 H6 110.134
H4 C1 H5 108.801 H4 C1 H6 108.801
H5 C1 H6 108.801
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.421      
2 C 0.045      
3 N -0.128      
4 H 0.168      
5 H 0.168      
6 H 0.168      


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 -4.005 4.005
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.500 0.000 0.000
y 0.000 -17.500 0.000
z 0.000 0.000 -20.790
Traceless
 xyz
x 1.645 0.000 0.000
y 0.000 1.645 0.000
z 0.000 0.000 -3.290
Polar
3z2-r2-6.580
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 2.984 0.000 0.000
y 0.000 2.984 0.000
z 0.000 0.000 5.586


<r2> (average value of r2) Å2
<r2> 44.979
(<r2>)1/2 6.707