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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B1B95/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/daug-cc-pVTZ
 hartrees
Energy at 0K-132.739515
Energy at 298.15K-132.742116
HF Energy-132.739515
Nuclear repulsion energy58.861751
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 B1B95/daug-cc-pVTZ
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 3078 3078 2.11 192.80 0.00 0.01
2 A1 2395 2395 12.20 78.49 0.14 0.25
3 A1 1404 1404 2.23 5.56 0.41 0.58
4 A1 945 945 1.11 5.47 0.05 0.09
5 E 3157 3157 0.35 56.43 0.75 0.86
5 E 3157 3157 0.35 56.44 0.75 0.86
6 E 1472 1472 10.90 5.15 0.75 0.86
6 E 1472 1472 10.90 5.13 0.75 0.86
7 E 1055 1055 2.10 0.09 0.75 0.86
7 E 1055 1055 2.10 0.09 0.75 0.86
8 E 385 385 0.57 1.31 0.75 0.86
8 E 385 385 0.57 1.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9980.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9980.8 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 B1B95/daug-cc-pVTZ
ABC
5.35044 0.31180 0.31180

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.170
C2 0.000 0.000 0.279
N3 0.000 0.000 1.425
H4 0.000 1.021 -1.543
H5 0.884 -0.510 -1.543
H6 -0.884 -0.510 -1.543

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.44892.59551.08661.08661.0866
C21.44891.14662.08782.08782.0878
N32.59551.14663.13853.13853.1385
H41.08662.08783.13851.76811.7681
H51.08662.08783.13851.76811.7681
H61.08662.08783.13851.76811.7681

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 110.037
C2 C1 H5 110.037 C2 C1 H6 110.037
H4 C1 H5 108.899 H4 C1 H6 108.899
H5 C1 H6 108.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.540      
2 C -0.326      
3 N -0.688      
4 H 0.518      
5 H 0.518      
6 H 0.518      


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 -4.020 4.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.527 0.000 0.000
y 0.000 -17.527 0.000
z 0.000 0.000 -20.712
Traceless
 xyz
x 1.593 0.000 0.000
y 0.000 1.593 0.000
z 0.000 0.000 -3.185
Polar
3z2-r2-6.371
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 3.582 0.000 0.000
y 0.000 3.582 0.000
z 0.000 0.000 5.896


<r2> (average value of r2) Å2
<r2> 44.777
(<r2>)1/2 6.692