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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: MP2/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/cc-pVTZ-PP
 hartrees
Energy at 0K-749.814070
Energy at 298.15K 
HF Energy-749.206366
Nuclear repulsion energy203.288571
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/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 A' 3159 3159 0.66 87.83 0.06 0.11
2 A' 1439 1439 0.11 10.87 0.61 0.76
3 A' 1191 1191 73.09 1.05 0.15 0.25
4 A' 678 678 49.40 5.11 0.75 0.86
5 A' 555 555 2.00 15.42 0.09 0.17
6 A' 147 147 0.07 3.72 0.38 0.56
7 A" 3247 3247 3.13 43.69 0.75 0.86
8 A" 1108 1108 0.01 2.22 0.75 0.86
9 A" 780 780 5.66 0.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6152.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6152.0 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 MP2/cc-pVTZ-PP
ABC
0.82175 0.02990 0.02901

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.082 0.000
Br2 1.877 0.701 0.000
I3 -1.231 -0.648 0.000
H4 -0.229 1.645 0.895
H5 -0.229 1.645 -0.895

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.91502.12261.08171.0817
Br21.91503.38782.47462.4746
I32.12263.38782.65702.6570
H41.08172.47462.65701.7900
H51.08172.47462.65701.7900

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 113.980 Br2 C1 H4 108.087
Br2 C1 H5 108.087 I3 C1 H4 107.543
I3 C1 H5 107.543 H4 C1 H5 111.666
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability