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

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-6956.803092
Energy at 298.15K 
HF Energy-6956.438443
Nuclear repulsion energy119.364373
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 MP2/6-311G**
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 3125 2969 11.57      
2 A1 1331 1265 33.09      
3 A1 559 531 1.70      
4 E 3244 3082 0.97      
4 E 3244 3082 0.97      
5 E 1487 1413 5.91      
5 E 1487 1413 5.91      
6 E 922 876 7.57      
6 E 922 876 7.57      

Unscaled Zero Point Vibrational Energy (zpe) 8160.1 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 7753.8 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 MP2/6-311G**
ABC
5.22041 0.24900 0.24900

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.818
I2 0.000 0.000 0.328
H3 0.000 1.033 -2.156
H4 0.895 -0.517 -2.156
H5 -0.895 -0.517 -2.156

Atom - Atom Distances (Å)
  C1 I2 H3 H4 H5
C12.14541.08731.08731.0873
I22.14542.68982.68982.6898
H31.08732.68981.79001.7900
H41.08732.68981.79001.7900
H51.08732.68981.79001.7900

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 108.108 I2 C1 H4 108.108
I2 C1 H5 108.108 H3 C1 H4 110.799
H3 C1 H5 110.799 H4 C1 H5 110.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability