return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: M06-2X/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at M06-2X/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.741887
Energy at 298.15K-132.744503
HF Energy-132.741887
Nuclear repulsion energy58.760463
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 M06-2X/6-311+G(3df,2p)
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 3084 3084 0.92 168.22 0.00 0.01
2 A1 2428 2428 11.64 68.85 0.16 0.27
3 A1 1410 1410 1.91 3.88 0.44 0.61
4 A1 940 940 1.82 5.61 0.06 0.12
5 E 3162 3162 0.03 50.98 0.75 0.86
5 E 3162 3162 0.04 50.79 0.75 0.86
6 E 1482 1482 11.06 5.01 0.75 0.86
6 E 1482 1482 11.08 4.98 0.75 0.86
7 E 1061 1061 2.16 0.07 0.75 0.86
7 E 1061 1061 2.16 0.07 0.75 0.86
8 E 389 389 0.70 1.76 0.75 0.86
8 E 389 389 0.70 1.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10023.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10023.7 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 M06-2X/6-311+G(3df,2p)
ABC
5.32508 0.31026 0.31026

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.175
C2 0.000 0.000 0.282
N3 0.000 0.000 1.427
H4 0.000 1.023 -1.544
H5 0.886 -0.512 -1.544
H6 -0.886 -0.512 -1.544

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45772.60261.08771.08771.0877
C21.45771.14492.09362.09362.0936
N32.60261.14493.14263.14263.1426
H41.08772.09363.14261.77231.7723
H51.08772.09363.14261.77231.7723
H61.08772.09363.14261.77231.7723

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 109.822
C2 C1 H5 109.822 C2 C1 H6 109.822
H4 C1 H5 109.118 H4 C1 H6 109.118
H5 C1 H6 109.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.442      
2 C 0.890      
3 N -1.076      
4 H 0.209      
5 H 0.209      
6 H 0.209      


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 -4.039 4.039
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.691 0.000 0.000
y 0.000 -17.691 0.000
z 0.000 0.000 -20.752
Traceless
 xyz
x 1.531 0.000 0.000
y 0.000 1.531 0.000
z 0.000 0.000 -3.061
Polar
3z2-r2-6.122
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 3.458 0.000 0.000
y 0.000 3.462 -0.002
z 0.000 -0.002 5.746


<r2> (average value of r2) Å2
<r2> 45.007
(<r2>)1/2 6.709