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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-7759.871728
Energy at 298.15K-7759.881363
Nuclear repulsion energy796.552146
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3113 3095 2.88      
2 A1 520 517 0.52      
3 A1 216 215 0.00      
4 E 1098 1092 31.75      
4 E 1098 1092 31.75      
5 E 607 604 142.12      
5 E 607 604 142.13      
6 E 147 146 0.06      
6 E 147 146 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 3777.1 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 3755.2 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 PBEPBE/cc-pVDZ
ABC
0.04016 0.04016 0.02039

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.523
H2 0.000 0.000 1.624
Br3 0.000 1.869 -0.045
Br4 1.618 -0.934 -0.045
Br5 -1.618 -0.934 -0.045

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.10091.95341.95341.9534
H21.10092.50612.50612.5061
Br31.95342.50613.23673.2367
Br41.95342.50613.23673.2367
Br51.95342.50613.23673.2367

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.931 H2 C1 Br4 106.931
H2 C1 Br5 106.931 Br3 C1 Br4 111.887
Br3 C1 Br5 111.887 Br4 C1 Br5 111.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.291      
2 H 0.164      
3 Br 0.042      
4 Br 0.042      
5 Br 0.042      


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 0.888 0.888
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -59.558 0.000 0.000
y 0.000 -59.558 0.000
z 0.000 0.000 -58.957
Traceless
 xyz
x -0.301 0.000 0.000
y 0.000 -0.301 0.000
z 0.000 0.000 0.602
Polar
3z2-r21.204
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 10.277 0.000 0.000
y 0.000 10.277 0.000
z 0.000 0.000 5.301


<r2> (average value of r2) Å2
<r2> 408.249
(<r2>)1/2 20.205