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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-132.759147
Energy at 298.15K-132.761749
HF Energy-132.759147
Nuclear repulsion energy58.313110
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 B3LYP/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 3062 2942 2.99 137.06 0.00 0.00
2 A1 2380 2287 7.69 48.99 0.30 0.46
3 A1 1421 1365 2.25 12.98 0.60 0.75
4 A1 934 898 1.74 3.40 0.20 0.33
5 E 3139 3016 1.67 68.01 0.75 0.86
5 E 3139 3016 1.67 68.01 0.75 0.86
6 E 1485 1427 9.84 16.81 0.75 0.86
6 E 1485 1427 9.84 16.81 0.75 0.86
7 E 1064 1022 3.13 0.08 0.75 0.86
7 E 1064 1022 3.13 0.08 0.75 0.86
8 E 386 371 0.53 3.91 0.75 0.86
8 E 386 371 0.53 3.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9972.1 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9581.2 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 B3LYP/6-31G**
ABC
5.29783 0.30581 0.30581

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.181
C2 0.000 0.000 0.280
N3 0.000 0.000 1.440
H4 0.000 1.026 -1.559
H5 0.888 -0.513 -1.559
H6 -0.888 -0.513 -1.559

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46052.62081.09351.09351.0935
C21.46051.16032.10582.10582.1058
N32.62081.16033.16983.16983.1698
H41.09352.10583.16981.77691.7769
H51.09352.10583.16981.77691.7769
H61.09352.10583.16981.77691.7769

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 110.250
C2 C1 H5 110.250 C2 C1 H6 110.250
H4 C1 H5 108.682 H4 C1 H6 108.682
H5 C1 H6 108.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.377      
2 C 0.329      
3 N -0.457      
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 -3.828 3.828
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.239 0.000 0.000
y 0.000 -17.239 0.000
z 0.000 0.000 -20.330
Traceless
 xyz
x 1.545 0.000 0.000
y 0.000 1.545 0.000
z 0.000 0.000 -3.090
Polar
3z2-r2-6.181
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 2.611 0.000 0.000
y 0.000 2.611 0.000
z 0.000 0.000 5.092


<r2> (average value of r2) Å2
<r2> 45.212
(<r2>)1/2 6.724