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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)/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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-132.422621
Energy at 298.15K-132.425146
HF Energy-131.939393
Nuclear repulsion energy57.562203
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)/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 3048 2934        
2 A1 2262 2177        
3 A1 1387 1335        
4 A1 916 881        
5 E 3139 3021        
5 E 3139 3021        
6 E 1458 1404        
6 E 1458 1403        
7 E 1043 1004        
7 E 1043 1004        
8 E 350 337        
8 E 350 337        

Unscaled Zero Point Vibrational Energy (zpe) 9795.9 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 9428.6 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)/aug-cc-pVDZ
ABC
5.17484 0.29778 0.29778

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.199
C2 0.000 0.000 0.282
N3 0.000 0.000 1.460
H4 0.000 1.038 -1.571
H5 0.899 -0.519 -1.571
H6 -0.899 -0.519 -1.571

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.48112.65901.10271.10271.1027
C21.48111.17802.12402.12402.1240
N32.65901.17803.20393.20393.2039
H41.10272.12403.20391.79791.7979
H51.10272.12403.20391.79791.7979
H61.10272.12403.20391.79791.7979

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 109.718
C2 C1 H5 109.718 C2 C1 H6 109.718
H4 C1 H5 109.223 H4 C1 H6 109.223
H5 C1 H6 109.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability