return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHBr (bromomethylene)

using model chemistry: LSDA/cc-pVDZ

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 LSDA/cc-pVDZ
 hartrees
Energy at 0K-2609.641845
Energy at 298.15K-2609.644575
HF Energy-2609.641845
Nuclear repulsion energy70.642755
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 LSDA/cc-pVDZ
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' 2801 2770 70.27      
2 A' 1116 1103 3.57      
3 A' 705 697 51.84      

Unscaled Zero Point Vibrational Energy (zpe) 2310.5 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 2285.1 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 LSDA/cc-pVDZ
ABC
14.66599 0.43037 0.41810

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.541 0.000
Br2 0.027 -0.314 0.000
H3 -1.096 1.730 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85491.1383
Br21.85492.3313
H31.13832.3313

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 99.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.217      
2 Br 0.092      
3 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.391 -1.040 0.000 1.737
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.037 -2.914 0.000
y -2.914 -25.837 0.000
z 0.000 0.000 -23.440
Traceless
 xyz
x -0.398 -2.914 0.000
y -2.914 -1.599 0.000
z 0.000 0.000 1.997
Polar
3z2-r23.994
x2-y20.801
xy-2.914
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.980 -0.349 0.000
y -0.349 6.033 0.000
z 0.000 0.000 2.304


<r2> (average value of r2) Å2
<r2> 37.390
(<r2>)1/2 6.115

State 2 (3A")

Jump to S1C1
Energy calculated at LSDA/cc-pVDZ
 hartrees
Energy at 0K-2609.634794
Energy at 298.15K-2609.637499
HF Energy-2609.634794
Nuclear repulsion energy71.710339
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 LSDA/cc-pVDZ
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' 3111 3077 6.19      
2 A' 848 839 8.71      
3 A' 776 767 27.25      

Unscaled Zero Point Vibrational Energy (zpe) 2367.2 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 2341.2 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 LSDA/cc-pVDZ
ABC
24.52646 0.43511 0.42753

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.484 0.000
Br2 0.021 -0.316 0.000
H3 -0.869 2.142 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.79951.1066
Br21.79952.6133
H31.10662.6133

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.228      
2 Br 0.099      
3 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.817 -0.231 0.000 0.849
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.920 -1.866 0.000
y -1.866 -22.364 0.000
z 0.000 0.000 -25.155
Traceless
 xyz
x -0.160 -1.866 0.000
y -1.866 2.173 0.000
z 0.000 0.000 -2.013
Polar
3z2-r2-4.026
x2-y2-1.556
xy-1.866
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.472 -0.233 0.000
y -0.233 5.761 0.000
z 0.000 0.000 2.063


<r2> (average value of r2) Å2
<r2> 36.931
(<r2>)1/2 6.077