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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)=FULL/daug-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 CCSD(T)=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-132.593802
Energy at 298.15K-132.596358
HF Energy-131.974669
Nuclear repulsion energy58.489608
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/daug-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 3081 3081        
2 A1 2322 2322        
3 A1 1426 1426        
4 A1 933 933        
5 E 3145 3145        
5 E 3145 3145        
6 E 1506 1506        
6 E 1506 1506        
7 E 1077 1077        
7 E 1077 1077        
8 E 360 360        
8 E 360 360        

Unscaled Zero Point Vibrational Energy (zpe) 9968.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9968.2 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 CCSD(T)=FULL/daug-cc-pVTZ
ABC
5.33333 0.30744 0.30744

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.279
N3 0.000 0.000 1.436
H4 0.000 1.022 -1.549
H5 0.885 -0.511 -1.549
H6 -0.885 -0.511 -1.549

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45872.61581.08721.08721.0872
C21.45871.15702.09492.09492.0949
N32.61581.15703.15573.15573.1557
H41.08722.09493.15571.77101.7710
H51.08722.09493.15571.77101.7710
H61.08722.09493.15571.77101.7710

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 109.879
C2 C1 H5 109.879 C2 C1 H6 109.879
H4 C1 H5 109.060 H4 C1 H6 109.060
H5 C1 H6 109.060
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability