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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-132.487778
Energy at 298.15K-132.490354
HF Energy-131.969695
Nuclear repulsion energy58.456085
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/TZVP
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 3096 2933 5.25      
2 A1 2375 2251 1.20      
3 A1 1449 1373 0.87      
4 A1 934 885 2.64      
5 E 3180 3013 2.60      
5 E 3180 3013 2.60      
6 E 1506 1427 10.10      
6 E 1506 1427 10.10      
7 E 1084 1027 0.40      
7 E 1084 1027 0.40      
8 E 364 345 0.45      
8 E 364 345 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 10061.6 cm-1
Scaled (by 0.9475) Zero Point Vibrational Energy (zpe) 9533.3 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/TZVP
ABC
5.31989 0.30680 0.30680

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.182
C2 0.000 0.000 0.282
N3 0.000 0.000 1.436
H4 0.000 1.024 -1.551
H5 0.887 -0.512 -1.551
H6 -0.887 -0.512 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46372.61831.08841.08841.0884
C21.46371.15462.09972.09972.0997
N32.61831.15463.15833.15833.1583
H41.08842.09973.15831.77321.7732
H51.08842.09973.15831.77321.7732
H61.08842.09973.15831.77321.7732

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 109.844
C2 C1 H5 109.844 C2 C1 H6 109.844
H4 C1 H5 109.095 H4 C1 H6 109.095
H5 C1 H6 109.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability