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

using model chemistry: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-7801.407247
Energy at 298.15K-7801.418954
HF Energy-7801.407247
Nuclear repulsion energy979.067502
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 B1B95/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 A1 3079 2960 2.18      
2 A1 1378 1324 7.58      
3 A1 1089 1047 10.37      
4 A1 416 400 6.33      
5 A1 219 210 0.05      
6 A2 305 293 0.00      
7 E 3185 3061 1.15      
7 E 3185 3061 1.16      
8 E 1441 1385 3.27      
8 E 1441 1385 3.26      
9 E 1070 1029 57.63      
9 E 1070 1029 57.50      
10 E 630 606 94.13      
10 E 630 606 93.93      
11 E 275 264 1.92      
11 E 275 264 1.92      
12 E 150 144 0.01      
12 E 150 144 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 9993.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 9606.2 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 B1B95/cc-pVDZ
ABC
0.03555 0.03555 0.02111

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.459
C2 0.000 0.000 1.968
Br3 0.000 1.833 -0.205
Br4 1.587 -0.917 -0.205
Br5 -1.587 -0.917 -0.205
H6 0.000 -1.034 2.333
H7 0.895 0.517 2.333
H8 -0.895 0.517 2.333

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50861.94961.94961.94962.14012.14012.1401
C21.50862.84272.84272.84271.09641.09641.0964
Br31.94962.84273.17493.17493.82892.99602.9960
Br41.94962.84273.17493.17492.99602.99603.8289
Br51.94962.84273.17493.17492.99603.82892.9960
H62.14011.09643.82892.99602.99601.79061.7906
H72.14011.09642.99602.99603.82891.79061.7906
H82.14011.09642.99603.82892.99601.79061.7906

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 109.461 C1 C2 H7 109.461
C1 C2 H8 109.461 C2 C1 Br3 109.920
C2 C1 Br4 109.920 C2 C1 Br5 109.920
Br3 C1 Br4 109.019 Br3 C1 Br5 109.019
Br4 C1 Br5 109.019 H6 C2 H7 109.481
H6 C2 H8 109.481 H7 C2 H8 109.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.469      
2 C 0.093      
3 Br 0.053      
4 Br 0.053      
5 Br 0.053      
6 H 0.073      
7 H 0.073      
8 H 0.073      


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 1.651 1.651
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.342 0.000 0.000
y 0.000 -66.342 0.000
z 0.000 0.000 -63.664
Traceless
 xyz
x -1.339 0.000 0.000
y 0.000 -1.339 0.000
z 0.000 0.000 2.679
Polar
3z2-r25.357
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 11.017 0.000 0.000
y 0.000 11.018 0.000
z 0.000 0.000 8.350


<r2> (average value of r2) Å2
<r2> 442.118
(<r2>)1/2 21.027