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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-2598.279431
Energy at 298.15K-2598.282082
HF Energy-2598.142867
Nuclear repulsion energy65.350361
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/3-21G
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' 2732 2648 124.74      
2 A' 1153 1117 8.52      
3 A' 556 539 51.83      

Unscaled Zero Point Vibrational Energy (zpe) 2220.2 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 2151.8 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/3-21G
ABC
14.81796 0.36412 0.35538

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.678 0.000
Br2 0.027 -0.341 0.000
H3 -1.089 1.864 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C12.01881.1310
Br22.01882.4707
H31.13102.4707

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 99.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-2598.289039
Energy at 298.15K-2598.291694
HF Energy-2598.180999
Nuclear repulsion energy67.458542
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/3-21G
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' 3176 3078 5.05      
2 A' 887 859 1.69      
3 A' 642 622 18.88      

Unscaled Zero Point Vibrational Energy (zpe) 2352.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 2279.6 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/3-21G
ABC
24.74090 0.38285 0.37702

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.589 0.000
Br2 0.021 -0.336 0.000
H3 -0.862 2.227 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.92561.0891
Br21.92562.7111
H31.08912.7111

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