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: M06-2X/STO-3G

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 M06-2X/STO-3G
 hartrees
Energy at 0K-2584.097790
Energy at 298.15K-2584.100522
HF Energy-2584.097790
Nuclear repulsion energy69.105712
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 M06-2X/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' 3072 3072 77.72      
2 A' 1317 1317 17.55      
3 A' 773 773 78.47      

Unscaled Zero Point Vibrational Energy (zpe) 2581.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2581.1 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 M06-2X/STO-3G
ABC
14.28053 0.41129 0.39978

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.578 0.000
Br2 0.027 -0.321 0.000
H3 -1.110 1.758 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.89861.1511
Br21.89862.3692
H31.15112.3692

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 98.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.065      
2 Br 0.027      
3 H 0.039      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.198 -0.212 0.000 1.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.642 -2.113 0.000
y -2.113 -23.927 0.000
z 0.000 0.000 -21.062
Traceless
 xyz
x -0.147 -2.113 0.000
y -2.113 -2.075 0.000
z 0.000 0.000 2.222
Polar
3z2-r24.445
x2-y21.285
xy-2.113
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.853 -0.430 0.000
y -0.430 3.234 0.000
z 0.000 0.000 0.903


<r2> (average value of r2) Å2
<r2> 36.971
(<r2>)1/2 6.080

State 2 (3A")

Jump to S1C1
Energy calculated at M06-2X/STO-3G
 hartrees
Energy at 0K-2584.103440
Energy at 298.15K-2584.106168
HF Energy-2584.103440
Nuclear repulsion energy70.133053
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 M06-2X/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' 3490 3490 1.38      
2 A' 1062 1062 5.36      
3 A' 851 851 27.83      

Unscaled Zero Point Vibrational Energy (zpe) 2701.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2701.4 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 M06-2X/STO-3G
ABC
23.20929 0.41612 0.40879

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.022 1.524 0.000
Br2 0.022 -0.322 0.000
H3 -0.890 2.137 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.84651.0988
Br21.84652.6233
H31.09882.6233

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 Br 0.044      
3 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.397 0.623 0.000 0.739
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.635 -0.787 0.000
y -0.787 -20.772 0.000
z 0.000 0.000 -22.291
Traceless
 xyz
x -0.103 -0.787 0.000
y -0.787 1.191 0.000
z 0.000 0.000 -1.088
Polar
3z2-r2-2.176
x2-y2-0.863
xy-0.787
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.632 -0.232 0.000
y -0.232 2.849 0.000
z 0.000 0.000 0.394


<r2> (average value of r2) Å2
<r2> 36.424
(<r2>)1/2 6.035