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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.594509
Energy at 298.15K-132.597083
HF Energy-131.971131
Nuclear repulsion energy58.392012
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 CCSD(T)=FULL/6-311+G(3df,2p)
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 3075 3075        
2 A1 2308 2308        
3 A1 1422 1422        
4 A1 930 930        
5 E 3159 3159        
5 E 3159 3159        
6 E 1494 1494        
6 E 1493 1493        
7 E 1063 1063        
7 E 1063 1063        
8 E 368 368        
8 E 368 368        

Unscaled Zero Point Vibrational Energy (zpe) 9950.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9950.8 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 CCSD(T)=FULL/6-311+G(3df,2p)
ABC
5.32478 0.30631 0.30631

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.182
C2 0.000 0.000 0.280
N3 0.000 0.000 1.439
H4 0.000 1.023 -1.553
H5 0.886 -0.512 -1.553
H6 -0.886 -0.512 -1.553

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46152.62061.08841.08841.0884
C21.46151.15902.09862.09862.0986
N32.62061.15903.16153.16153.1615
H41.08842.09863.16151.77241.7724
H51.08842.09863.16151.77241.7724
H61.08842.09863.16151.77241.7724

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 109.915
C2 C1 H5 109.915 C2 C1 H6 109.915
H4 C1 H5 109.024 H4 C1 H6 109.024
H5 C1 H6 109.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability