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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-132.716893
Energy at 298.15K-132.719424
HF Energy-132.716893
Nuclear repulsion energy57.830248
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 BLYP/6-31+G**
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 2979 2963 5.10 179.57 0.01 0.01
2 A1 2262 2250 8.99 77.05 0.21 0.35
3 A1 1375 1368 2.16 12.50 0.63 0.77
4 A1 899 894 0.88 4.08 0.11 0.20
5 E 3049 3033 1.83 74.78 0.75 0.86
5 E 3049 3033 1.83 74.78 0.75 0.86
6 E 1441 1434 11.81 10.31 0.75 0.86
6 E 1441 1434 11.81 10.31 0.75 0.86
7 E 1030 1025 1.91 0.00 0.75 0.86
7 E 1030 1025 1.91 0.00 0.75 0.86
8 E 362 360 0.05 4.41 0.75 0.86
8 E 362 360 0.05 4.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9640.4 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 9589.3 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 BLYP/6-31+G**
ABC
5.22604 0.30095 0.30095

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.189
C2 0.000 0.000 0.279
N3 0.000 0.000 1.453
H4 0.000 1.033 -1.571
H5 0.895 -0.516 -1.571
H6 -0.895 -0.516 -1.571

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46872.64231.10121.10121.1012
C21.46871.17362.11922.11922.1192
N32.64231.17363.19563.19563.1956
H41.10122.11923.19561.78901.7890
H51.10122.11923.19561.78901.7890
H61.10122.11923.19561.78901.7890

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 110.286
C2 C1 H5 110.286 C2 C1 H6 110.286
H4 C1 H5 108.645 H4 C1 H6 108.645
H5 C1 H6 108.645
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.498      
2 C 0.406      
3 N -0.490      
4 H 0.194      
5 H 0.194      
6 H 0.194      


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 -4.040 4.040
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.948 0.000 0.000
y 0.000 -17.948 0.000
z 0.000 0.000 -21.237
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-r2-6.579
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 3.150 0.000 0.000
y 0.000 3.150 0.000
z 0.000 0.000 6.104


<r2> (average value of r2) Å2
<r2> 46.233
(<r2>)1/2 6.799