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All results from a given calculation for CH3I (methyl iodide)

using model chemistry: CCSD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-336.957974
Energy at 298.15K 
HF Energy-336.289917
Nuclear repulsion energy61.889152
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/Def2TZVPP
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 3116 3116 11.82      
2 A1 1307 1307 29.24      
3 A1 564 564 1.92      
4 E 3226 3226 0.91      
4 E 3226 3226 0.91      
5 E 1492 1492 4.44      
5 E 1492 1492 4.44      
6 E 911 911 5.64      
6 E 911 911 5.64      

Unscaled Zero Point Vibrational Energy (zpe) 8122.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8122.6 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/Def2TZVPP
ABC
5.24566 0.25339 0.25339

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.803
I2 0.000 0.000 0.325
H3 0.000 1.031 -2.133
H4 0.893 -0.515 -2.133
H5 -0.893 -0.515 -2.133

Atom - Atom Distances (Å)
  C1 I2 H3 H4 H5
C12.12751.08251.08251.0825
I22.12752.66522.66522.6652
H31.08252.66521.78571.7857
H41.08252.66521.78571.7857
H51.08252.66521.78571.7857

picture of methyl iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 H3 107.758 I2 C1 H4 107.758
I2 C1 H5 107.758 H3 C1 H4 111.129
H3 C1 H5 111.129 H4 C1 H5 111.129
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability