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

using model chemistry: CCSD(T)=FULL/cc-pVTZ-PP

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(T)=FULL/cc-pVTZ-PP
 hartrees
Energy at 0K-334.762143
Energy at 298.15K 
HF Energy-334.291169
Nuclear repulsion energy61.694360
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(T)=FULL/cc-pVTZ-PP
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 3112 3112        
2 A1 1297 1297        
3 A1 556 556        
4 E 3204 3204        
4 E 3204 3204        
5 E 1488 1488        
5 E 1488 1488        
6 E 899 899        
6 E 899 899        

Unscaled Zero Point Vibrational Energy (zpe) 8073.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8073.0 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(T)=FULL/cc-pVTZ-PP
ABC
5.26234 0.25129 0.25129

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVTZ-PP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.811
I2 0.000 0.000 0.326
H3 0.000 1.029 -2.141
H4 0.891 -0.515 -2.141
H5 -0.891 -0.515 -2.141

Atom - Atom Distances (Å)
  C1 I2 H3 H4 H5
C12.13701.08101.08101.0810
I22.13702.67332.67332.6733
H31.08102.67331.78291.7829
H41.08102.67331.78291.7829
H51.08102.67331.78291.7829

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 107.786 I2 C1 H4 107.786
I2 C1 H5 107.786 H3 C1 H4 111.103
H3 C1 H5 111.103 H4 C1 H5 111.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability