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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD=FULL/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-132.410941
Energy at 298.15K-132.413506
HF Energy-131.941084
Nuclear repulsion energy57.813190
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/aug-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 3075 3075 4.68      
2 A1 2331 2331 1.70      
3 A1 1404 1404 0.20      
4 A1 930 930 2.27      
5 E 3165 3165 2.02      
5 E 3165 3165 2.02      
6 E 1471 1471 8.64      
6 E 1471 1471 8.64      
7 E 1056 1056 0.70      
7 E 1056 1056 0.70      
8 E 364 364 0.72      
8 E 364 364 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 9926.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9926.4 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=FULL/aug-cc-pVDZ
ABC
5.20286 0.30029 0.30029

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.195
C2 0.000 0.000 0.283
N3 0.000 0.000 1.453
H4 0.000 1.035 -1.566
H5 0.897 -0.518 -1.566
H6 -0.897 -0.518 -1.566

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47752.64731.09981.09981.0998
C21.47751.16972.11892.11892.1189
N32.64731.16973.19123.19123.1912
H41.09982.11893.19121.79301.7930
H51.09982.11893.19121.79301.7930
H61.09982.11893.19121.79301.7930

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 109.734
C2 C1 H5 109.734 C2 C1 H6 109.734
H4 C1 H5 109.207 H4 C1 H6 109.207
H5 C1 H6 109.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability