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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-2608.450528
Energy at 298.15K-2608.453232
HF Energy-2608.202578
Nuclear repulsion energy69.353116
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
(Å4/u)
Dep P Dep U
1 A' 2928 2788 78.95      
2 A' 1193 1136 2.78      
3 A' 646 615 67.72      

Unscaled Zero Point Vibrational Energy (zpe) 2383.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 2269.3 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
15.35739 0.41261 0.40182

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 1.573 0.000
Br2 0.026 -0.320 0.000
H3 -1.071 1.777 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.89361.1163
Br21.89362.3671
H31.11632.3671

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.511
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-2608.449545
Energy at 298.15K-2608.452250
HF Energy-2608.231890
Nuclear repulsion energy70.353265
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
(Å4/u)
Dep P Dep U
1 A' 3231 3077 6.39      
2 A' 948 902 2.56      
3 A' 726 691 23.06      

Unscaled Zero Point Vibrational Energy (zpe) 2452.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 2335.3 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
24.92628 0.41783 0.41094

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 1.518 0.000
Br2 0.021 -0.322 0.000
H3 -0.860 2.156 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.84011.0879
Br21.84012.6302
H31.08792.6302

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