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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-132.386022
Energy at 298.15K-132.388569
HF Energy-131.923697
Nuclear repulsion energy57.942215
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/6-31G*
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 3077 2987        
2 A1 2319 2251        
3 A1 1455 1413        
4 A1 934 906        
5 E 3163 3070        
5 E 3162 3070        
6 E 1520 1475        
6 E 1520 1475        
7 E 1082 1050        
7 E 1082 1050        
8 E 358 348        
8 E 358 348        

Unscaled Zero Point Vibrational Energy (zpe) 10015.3 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 9721.8 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/6-31G*
ABC
5.26119 0.30176 0.30176

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.190
C2 0.000 0.000 0.279
N3 0.000 0.000 1.451
H4 0.000 1.029 -1.564
H5 0.892 -0.515 -1.564
H6 -0.892 -0.515 -1.564

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46912.64051.09541.09541.0954
C21.46911.17142.11142.11142.1114
N32.64051.17143.18583.18583.1858
H41.09542.11143.18581.78311.7831
H51.09542.11143.18581.78311.7831
H61.09542.11143.18581.78311.7831

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 109.985
C2 C1 H5 109.985 C2 C1 H6 109.985
H4 C1 H5 108.953 H4 C1 H6 108.953
H5 C1 H6 108.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability