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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD(T)/6-31+G**

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)/6-31+G**
 hartrees
Energy at 0K-132.404573
Energy at 298.15K-132.407061
HF Energy-131.932295
Nuclear repulsion energy57.924442
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)/6-31+G**
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 3110 2985        
2 A1 2298 2205        
3 A1 1449 1390        
4 A1 925 888        
5 E 3204 3074        
5 E 3204 3074        
6 E 1515 1454        
6 E 1515 1453        
7 E 1076 1032        
7 E 1076 1032        
8 E 329 316        
8 E 329 316        

Unscaled Zero Point Vibrational Energy (zpe) 10014.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 9609.7 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)/6-31+G**
ABC
5.29914 0.30106 0.30106

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

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 0.279
N3 0.000 0.000 1.453
H4 0.000 1.026 -1.561
H5 0.888 -0.513 -1.561
H6 -0.888 -0.513 -1.561

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47212.64561.08991.08991.0899
C21.47211.17352.10702.10702.1070
N32.64561.17353.18373.18373.1837
H41.08992.10703.18371.77671.7767
H51.08992.10703.18371.77671.7767
H61.08992.10703.18371.77671.7767

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 109.752
C2 C1 H5 109.752 C2 C1 H6 109.752
H4 C1 H5 109.189 H4 C1 H6 109.189
H5 C1 H6 109.189
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability