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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)=FULL/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-132.654755
Energy at 298.15K-132.657335
HF Energy-131.982020
Nuclear repulsion energy58.538465
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/cc-pVQZ
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 3079 2973        
2 A1 2320 2240        
3 A1 1419 1370        
4 A1 934 902        
5 E 3165 3056        
5 E 3164 3055        
6 E 1494 1443        
6 E 1494 1443        
7 E 1068 1031        
7 E 1067 1030        
8 E 371 358        
8 E 370 357        

Unscaled Zero Point Vibrational Energy (zpe) 9972.2 cm-1
Scaled (by 0.9656) Zero Point Vibrational Energy (zpe) 9629.2 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/cc-pVQZ
ABC
5.34806 0.30786 0.30786

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.179
C2 0.000 0.000 0.279
N3 0.000 0.000 1.435
H4 0.000 1.021 -1.549
H5 0.884 -0.511 -1.549
H6 -0.884 -0.511 -1.549

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45812.61391.08591.08591.0859
C21.45811.15582.09372.09372.0937
N32.61391.15583.15353.15353.1535
H41.08592.09373.15351.76851.7685
H51.08592.09373.15351.76851.7685
H61.08592.09373.15351.76851.7685

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 109.904
C2 C1 H5 109.904 C2 C1 H6 109.904
H4 C1 H5 109.035 H4 C1 H6 109.035
H5 C1 H6 109.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability