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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-2608.459401
Energy at 298.15K-2608.462108
HF Energy-2608.204818
Nuclear repulsion energy69.443840
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/6-31G**
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' 2975 2801 80.74      
2 A' 1187 1117 2.90      
3 A' 647 609 67.05      

Unscaled Zero Point Vibrational Energy (zpe) 2404.5 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 2263.6 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/6-31G**
ABC
15.47522 0.41350 0.40274

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.572 0.000
Br2 0.026 -0.320 0.000
H3 -1.067 1.768 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.89231.1103
Br21.89232.3567
H31.11032.3567

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.150
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-2608.457745
Energy at 298.15K-2608.460455
HF Energy-2608.234216
Nuclear repulsion energy70.447728
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/6-31G**
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' 3277 3085 6.16      
2 A' 954 898 1.92      
3 A' 727 685 22.77      

Unscaled Zero Point Vibrational Energy (zpe) 2479.1 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 2333.8 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/6-31G**
ABC
25.09403 0.41886 0.41198

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.517 0.000
Br2 0.021 -0.321 0.000
H3 -0.857 2.149 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.83841.0818
Br21.83842.6220
H31.08182.6220

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability