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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)/Def2TZVPP

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)/Def2TZVPP
 hartrees
Energy at 0K-132.531201
Energy at 298.15K-132.533756
HF Energy-131.976952
Nuclear repulsion energy58.270518
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)/Def2TZVPP
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 3068 3068        
2 A1 2302 2302        
3 A1 1417 1417        
4 A1 923 923        
5 E 3151 3151        
5 E 3151 3151        
6 E 1487 1487        
6 E 1485 1485        
7 E 1061 1061        
7 E 1060 1060        
8 E 362 362        
8 E 362 362        

Unscaled Zero Point Vibrational Energy (zpe) 9914.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9914.4 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)/Def2TZVPP
ABC
5.30879 0.30487 0.30487

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.186
C2 0.000 0.000 0.281
N3 0.000 0.000 1.442
H4 0.000 1.025 -1.555
H5 0.888 -0.512 -1.555
H6 -0.888 -0.512 -1.555

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46612.62741.08921.08921.0892
C21.46611.16132.10192.10192.1019
N32.62741.16133.16683.16683.1668
H41.08922.10193.16681.77501.7750
H51.08922.10193.16681.77501.7750
H61.08922.10193.16681.77501.7750

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 109.802
C2 C1 H5 109.802 C2 C1 H6 109.802
H4 C1 H5 109.139 H4 C1 H6 109.139
H5 C1 H6 109.139
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability