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

using model chemistry: CID/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 CID/6-311G*
 hartrees
Energy at 0K-6956.764206
Energy at 298.15K 
HF Energy-6956.433603
Nuclear repulsion energy119.218616
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 CID/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 3164 2940 14.92      
2 A1 1374 1277 32.46      
3 A1 559 519 3.20      
4 E 3277 3044 1.48      
4 E 3277 3044 1.48      
5 E 1531 1423 7.91      
5 E 1531 1423 7.91      
6 E 950 883 8.83      
6 E 950 883 8.83      

Unscaled Zero Point Vibrational Energy (zpe) 8306.7 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 7717.8 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 CID/6-311G*
ABC
5.26092 0.24811 0.24811

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.822
I2 0.000 0.000 0.328
H3 0.000 1.029 -2.158
H4 0.892 -0.515 -2.158
H5 -0.892 -0.515 -2.158

Atom - Atom Distances (Å)
  C1 I2 H3 H4 H5
C12.15001.08311.08311.0831
I22.15002.69132.69132.6913
H31.08312.69131.78311.7831
H41.08312.69131.78311.7831
H51.08312.69131.78311.7831

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 108.109 I2 C1 H4 108.109
I2 C1 H5 108.109 H3 C1 H4 110.799
H3 C1 H5 110.799 H4 C1 H5 110.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability