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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-7723.834017
Energy at 298.15K-7723.843597
Nuclear repulsion energy773.342341
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 BLYP/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 A1 3154 3136 0.02      
2 A1 490 487 0.81      
3 A1 206 204 0.00      
4 E 1143 1136 33.69      
4 E 1143 1136 33.69      
5 E 602 599 157.57      
5 E 602 599 157.59      
6 E 142 141 0.02      
6 E 142 141 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 3811.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3790.3 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 BLYP/3-21G
ABC
0.03780 0.03780 0.01917

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.522
H2 0.000 0.000 1.611
Br3 0.000 1.927 -0.045
Br4 1.669 -0.964 -0.045
Br5 -1.669 -0.964 -0.045

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08882.00902.00902.0090
H21.08882.54122.54122.5412
Br32.00902.54123.33793.3379
Br42.00902.54123.33793.3379
Br52.00902.54123.33793.3379

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.411 H2 C1 Br4 106.411
H2 C1 Br5 106.411 Br3 C1 Br4 112.350
Br3 C1 Br5 112.350 Br4 C1 Br5 112.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.791      
2 H 0.324      
3 Br 0.156      
4 Br 0.156      
5 Br 0.156      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.054 1.054
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -59.846 0.000 0.000
y 0.000 -59.846 0.000
z 0.000 0.000 -58.956
Traceless
 xyz
x -0.445 0.000 0.000
y 0.000 -0.445 0.000
z 0.000 0.000 0.890
Polar
3z2-r21.781
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.226 0.000 0.000
y 0.000 9.226 -0.000
z 0.000 -0.000 3.156


<r2> (average value of r2) Å2
<r2> 431.601
(<r2>)1/2 20.775