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

using model chemistry: MP2=FULL/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=FULL/6-311G**
 hartrees
Energy at 0K-6957.319328
Energy at 298.15K 
HF Energy-6956.438455
Nuclear repulsion energy119.357443
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=FULL/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 3130 2969 11.33      
2 A1 1331 1263 32.14      
3 A1 559 530 1.51      
4 E 3249 3082 0.90      
4 E 3249 3082 0.90      
5 E 1487 1410 6.03      
5 E 1487 1410 6.03      
6 E 921 874 7.73      
6 E 921 874 7.73      

Unscaled Zero Point Vibrational Energy (zpe) 8167.1 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 7747.3 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 MP2=FULL/6-311G**
ABC
5.22603 0.24894 0.24894

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 -0.516 -2.156
H5 -0.895 -0.516 -2.156

Atom - Atom Distances (Å)
  C1 I2 H3 H4 H5
C12.14551.08701.08701.0870
I22.14552.69032.69032.6903
H31.08702.69031.78901.7890
H41.08702.69031.78901.7890
H51.08702.69031.78901.7890

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 108.146 I2 C1 H4 108.146
I2 C1 H5 108.146 H3 C1 H4 110.763
H3 C1 H5 110.763 H4 C1 H5 110.763
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability