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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=FULL/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2=FULL/cc-pVQZ
 hartrees
Energy at 0K-132.615379
Energy at 298.15K-132.617958
HF Energy-131.980780
Nuclear repulsion energy58.537231
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 MP2=FULL/cc-pVQZ
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 3114 2980 1.73 171.14 0.00 0.00
2 A1 2239 2143 0.18 43.00 0.20 0.33
3 A1 1421 1360 1.87 3.60 0.45 0.62
4 A1 945 905 0.91 5.19 0.08 0.15
5 E 3209 3071 0.05 51.21 0.75 0.86
5 E 3209 3071 0.05 51.21 0.75 0.86
6 E 1500 1436 10.66 5.47 0.75 0.86
6 E 1500 1436 10.66 5.47 0.75 0.86
7 E 1069 1023 1.79 0.04 0.75 0.86
7 E 1069 1023 1.79 0.04 0.75 0.86
8 E 368 352 0.49 1.65 0.75 0.86
8 E 368 352 0.49 1.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10004.8 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 9575.6 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 MP2=FULL/cc-pVQZ
ABC
5.38298 0.30818 0.30818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.177
C2 0.000 0.000 0.274
N3 0.000 0.000 1.437
H4 0.000 1.018 -1.547
H5 0.881 -0.509 -1.547
H6 -0.881 -0.509 -1.547

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45032.61331.08311.08311.0831
C21.45031.16302.08592.08592.0859
N32.61331.16303.15253.15253.1525
H41.08312.08593.15251.76281.7628
H51.08312.08593.15251.76281.7628
H61.08312.08593.15251.76281.7628

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 110.001
C2 C1 H5 110.001 C2 C1 H6 110.001
H4 C1 H5 108.937 H4 C1 H6 108.937
H5 C1 H6 108.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability