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All results from a given calculation for CH3CN (Acetonitrile)

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

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/6-31G**
 hartrees
Energy at 0K-132.708445
Energy at 298.15K-132.710998
HF Energy-132.708445
Nuclear repulsion energy57.860800
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/6-31G**
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 2983 2960 4.16 142.43 0.00 0.00
2 A1 2278 2260 5.41 51.12 0.30 0.46
3 A1 1382 1371 1.59 16.29 0.58 0.73
4 A1 904 897 0.93 3.41 0.20 0.33
5 E 3053 3029 2.83 70.77 0.75 0.86
5 E 3053 3029 2.83 70.77 0.75 0.86
6 E 1449 1437 8.70 17.85 0.75 0.86
6 E 1449 1437 8.70 17.85 0.75 0.86
7 E 1034 1026 2.87 0.13 0.75 0.86
7 E 1034 1026 2.87 0.13 0.75 0.86
8 E 372 369 0.31 3.58 0.75 0.86
8 E 372 369 0.31 3.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9680.4 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 9605.8 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/6-31G**
ABC
5.23624 0.30125 0.30125

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.188
C2 0.000 0.000 0.280
N3 0.000 0.000 1.452
H4 0.000 1.032 -1.572
H5 0.894 -0.516 -1.572
H6 -0.894 -0.516 -1.572

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46772.64041.10091.10091.1009
C21.46771.17272.11962.11962.1196
N32.64041.17273.19543.19543.1954
H41.10092.11963.19541.78731.7873
H51.10092.11963.19541.78731.7873
H61.10092.11963.19541.78731.7873

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 110.397
C2 C1 H5 110.397 C2 C1 H6 110.397
H4 C1 H5 108.530 H4 C1 H6 108.530
H5 C1 H6 108.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.348      
2 C 0.334      
3 N -0.451      
4 H 0.155      
5 H 0.155      
6 H 0.155      


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 -3.744 3.744
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.272 0.000 0.000
y 0.000 -17.272 0.000
z 0.000 0.000 -20.277
Traceless
 xyz
x 1.502 0.000 0.000
y 0.000 1.502 0.000
z 0.000 0.000 -3.004
Polar
3z2-r2-6.009
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 2.655 0.000 0.000
y 0.000 2.655 0.000
z 0.000 0.000 5.283


<r2> (average value of r2) Å2
<r2> 45.724
(<r2>)1/2 6.762