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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD=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=FULL/cc-pVQZ
 hartrees
Energy at 0K-132.626708
Energy at 298.15K-132.629320
HF Energy-131.983076
Nuclear repulsion energy58.747795
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/cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3102 3102 2.46      
2 A1 2388 2388 3.21      
3 A1 1437 1437 1.19      
4 A1 945 945 1.93      
5 E 3185 3185 0.75      
5 E 3185 3185 0.75      
6 E 1507 1507 10.04      
6 E 1507 1507 10.04      
7 E 1082 1082 1.48      
7 E 1082 1082 1.48      
8 E 382 382 0.84      
8 E 382 382 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 10091.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10091.4 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/cc-pVQZ
ABC
5.36691 0.30990 0.30990

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.176
C2 0.000 0.000 0.281
N3 0.000 0.000 1.429
H4 0.000 1.019 -1.545
H5 0.883 -0.510 -1.545
H6 -0.883 -0.510 -1.545

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45672.60471.08401.08401.0840
C21.45671.14802.09092.09092.0909
N32.60471.14803.14353.14353.1435
H41.08402.09093.14351.76541.7654
H51.08402.09093.14351.76541.7654
H61.08402.09093.14351.76541.7654

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 109.898
C2 C1 H5 109.898 C2 C1 H6 109.898
H4 C1 H5 109.041 H4 C1 H6 109.041
H5 C1 H6 109.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability