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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: QCISD/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 QCISD/cc-pVTZ-PP
 hartrees
Energy at 0K-749.838777
Energy at 298.15K 
HF Energy-749.206464
Nuclear repulsion energy202.422441
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 QCISD/cc-pVTZ-PP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3158 3158 1.32      
2 A' 1450 1450 0.19      
3 A' 1202 1202 81.54      
4 A' 670 670 49.53      
5 A' 546 546 1.95      
6 A' 147 147 0.09      
7 A" 3240 3240 1.71      
8 A" 1111 1111 0.01      
9 A" 780 780 5.11      

Unscaled Zero Point Vibrational Energy (zpe) 6151.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6151.6 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 QCISD/cc-pVTZ-PP
ABC
0.82047 0.02960 0.02872

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.083 0.000
Br2 1.886 0.707 0.000
I3 -1.237 -0.651 0.000
H4 -0.228 1.647 0.894
H5 -0.228 1.647 -0.894

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.92332.13031.08101.0810
Br21.92333.40542.48022.4802
I32.13033.40542.66432.6643
H41.08102.48022.66431.7876
H51.08102.48022.66431.7876

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.205 Br2 C1 H4 107.986
Br2 C1 H5 107.986 I3 C1 H4 107.590
I3 C1 H5 107.590 H4 C1 H5 111.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability