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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-2909.048844
Energy at 298.15K 
HF Energy-2908.113428
Nuclear repulsion energy262.399284
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/Def2TZVPP
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' 3165 3165 1.17      
2 A' 1453 1453 0.12      
3 A' 1207 1207 79.82      
4 A' 673 673 48.82      
5 A' 547 547 2.15      
6 A' 147 147 0.10      
7 A" 3249 3249 1.87      
8 A" 1118 1118 0.00      
9 A" 781 781 5.27      

Unscaled Zero Point Vibrational Energy (zpe) 6168.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6168.9 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/Def2TZVPP
ABC
0.82283 0.02970 0.02882

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.079 0.000
Br2 1.886 0.698 0.000
I3 -1.237 -0.645 0.000
H4 -0.227 1.643 0.893
H5 -0.227 1.643 -0.893

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.92452.12241.08031.0803
Br21.92453.39992.48102.4810
I32.12243.39992.65602.6560
H41.08032.48102.65601.7867
H51.08032.48102.65601.7867

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.223 Br2 C1 H4 107.996
Br2 C1 H5 107.996 I3 C1 H4 107.556
I3 C1 H5 107.556 H4 C1 H5 111.578
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability