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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD=FULL/cc-pVDZ

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=FULL/cc-pVDZ
 hartrees
Energy at 0K-132.389884
Energy at 298.15K-132.392463
HF Energy-131.935592
Nuclear repulsion energy57.836603
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=FULL/cc-pVDZ
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 3095 3095 5.13      
2 A1 2353 2353 0.77      
3 A1 1419 1419 0.38      
4 A1 940 940 2.39      
5 E 3191 3191 1.60      
5 E 3191 3191 1.60      
6 E 1481 1481 9.47      
6 E 1481 1481 9.47      
7 E 1063 1063 1.25      
7 E 1063 1063 1.25      
8 E 370 370 0.30      
8 E 370 370 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 10008.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10008.5 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=FULL/cc-pVDZ
ABC
5.20271 0.30071 0.30071

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.193
C2 0.000 0.000 0.282
N3 0.000 0.000 1.452
H4 0.000 1.035 -1.568
H5 0.897 -0.518 -1.568
H6 -0.897 -0.518 -1.568

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47512.64451.10101.10101.1010
C21.47511.16942.11992.11992.1199
N32.64451.16943.19193.19193.1919
H41.10102.11993.19191.79301.7930
H51.10102.11993.19191.79301.7930
H61.10102.11993.19191.79301.7930

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 109.909
C2 C1 H5 109.909 C2 C1 H6 109.909
H4 C1 H5 109.030 H4 C1 H6 109.030
H5 C1 H6 109.030
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability