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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: QCISD(T)=FULL/aug-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 QCISD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-132.591178
Energy at 298.15K-132.593762
HF Energy-131.974322
Nuclear repulsion energy58.494630
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 QCISD(T)=FULL/aug-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 A1 2317 2317        
3 A1 1417 1417        
4 A1 934 934        
5 E 3144 3144        
5 E 3144 3144        
6 E 1497 1497        
6 E 1497 1497        
7 E 1068 1068        
7 E 1068 1068        
8 E 371 371        
8 E 371 371        

Unscaled Zero Point Vibrational Energy (zpe) 9952.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9952.2 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 QCISD(T)=FULL/aug-cc-pVTZ
ABC
5.33489 0.30762 0.30762

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.179
C2 0.000 0.000 0.278
N3 0.000 0.000 1.436
H4 0.000 1.022 -1.550
H5 0.885 -0.511 -1.550
H6 -0.885 -0.511 -1.550

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45692.61481.08751.08751.0875
C21.45691.15792.09422.09422.0942
N32.61481.15793.15583.15583.1558
H41.08752.09423.15581.77071.7707
H51.08752.09423.15581.77071.7707
H61.08752.09423.15581.77071.7707

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 109.937
C2 C1 H5 109.937 C2 C1 H6 109.937
H4 C1 H5 109.001 H4 C1 H6 109.001
H5 C1 H6 109.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability