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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: B2PLYP=FULLultrafine/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B2PLYP=FULLultrafine/STO-3G
 hartrees
Energy at 0K-5129.469083
Energy at 298.15K 
HF Energy-5129.446980
Nuclear repulsion energy332.390278
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 B2PLYP=FULLultrafine/STO-3G
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' 3439 3439 0.56 42.69 0.36 0.53
2 A' 676 676 14.61 4.90 0.31 0.47
3 A' 475 475 9.14 6.10 0.15 0.25
4 A' 200 200 0.41 2.81 0.62 0.76
5 A" 1342 1342 84.21 6.25 0.75 0.86
6 A" 910 910 96.99 2.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3520.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3520.4 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 B2PLYP=FULLultrafine/STO-3G
ABC
1.30003 0.03944 0.03831

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.820 0.000
H2 -0.511 1.793 0.000
Br3 0.007 -0.096 1.645
Br4 0.007 -0.096 -1.645

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.10141.88321.8832
H21.10142.55772.5577
Br31.88322.55773.2904
Br41.88322.55773.2904

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 115.442 H2 C1 Br4 115.442
Br3 C1 Br4 121.763
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability