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All results from a given calculation for CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: PBEPBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-7713.677271
Energy at 298.15K-7713.688684
HF Energy-7713.677271
Nuclear repulsion energy958.364025
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/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 A1 3245 2964 0.00      
2 A1 1506 1376 0.39      
3 A1 1081 988 23.58      
4 A1 418 382 8.80      
5 A1 232 212 0.87      
6 A2 268 245 0.00      
7 E 3417 3122 0.13      
7 E 3417 3122 0.13      
8 E 1610 1471 1.58      
8 E 1610 1471 1.58      
9 E 1146 1047 65.18      
9 E 1146 1047 65.18      
10 E 686 626 97.09      
10 E 686 626 97.10      
11 E 276 253 0.67      
11 E 276 253 0.67      
12 E 152 139 0.23      
12 E 152 139 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 10662.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 9740.9 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/STO-3G
ABC
0.03405 0.03405 0.02010

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.417
C2 0.000 0.000 1.988
Br3 0.000 1.878 -0.205
Br4 1.627 -0.939 -0.205
Br5 -1.627 -0.939 -0.205
H6 0.000 -1.040 2.367
H7 0.901 0.520 2.367
H8 -0.901 0.520 2.367

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.57101.97871.97871.97872.21002.21002.2100
C21.57102.88762.88762.88761.10721.10721.1072
Br31.97872.88763.25353.25353.89023.04493.0449
Br41.97872.88763.25353.25353.04493.04493.8902
Br51.97872.88763.25353.25353.04493.89023.0449
H62.21001.10723.89023.04493.04491.80201.8020
H72.21001.10723.04493.04493.89021.80201.8020
H82.21001.10723.04493.89023.04491.80201.8020

picture of 1,1,1-tribromoethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.007 C1 C2 H7 110.007
C1 C2 H8 110.007 C2 C1 Br3 108.323
C2 C1 Br4 108.323 C2 C1 Br5 108.323
Br3 C1 Br4 110.594 Br3 C1 Br5 110.594
Br4 C1 Br5 110.595 H6 C2 H7 108.931
H6 C2 H8 108.931 H7 C2 H8 108.931
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.113      
2 C -0.230      
3 Br 0.015      
4 Br 0.015      
5 Br 0.015      
6 H 0.100      
7 H 0.100      
8 H 0.100      


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 1.442 1.442
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -62.121 0.000 0.000
y 0.000 -62.121 0.000
z 0.000 0.000 -59.243
Traceless
 xyz
x -1.439 0.000 0.000
y 0.000 -1.439 0.000
z 0.000 0.000 2.879
Polar
3z2-r25.757
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 5.777 0.000 0.000
y 0.000 5.777 0.000
z 0.000 0.000 2.749


<r2> (average value of r2) Å2
<r2> 457.915
(<r2>)1/2 21.399