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

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-7761.897567
Energy at 298.15K-7761.909404
HF Energy-7761.897567
Nuclear repulsion energy964.304054
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 HSEh1PBE/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 3089 2976 1.72      
2 A1 1476 1422 21.06      
3 A1 1081 1042 12.72      
4 A1 413 397 6.98      
5 A1 221 213 0.06      
6 A2 329 317 0.00      
7 E 3177 3061 1.51      
7 E 3177 3061 1.51      
8 E 1535 1479 4.68      
8 E 1535 1479 4.68      
9 E 1140 1098 69.04      
9 E 1140 1098 69.04      
10 E 665 640 97.89      
10 E 665 640 97.93      
11 E 292 282 1.20      
11 E 292 282 1.20      
12 E 151 146 0.07      
12 E 151 146 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 10265.3 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 9888.6 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 HSEh1PBE/3-21G
ABC
0.03449 0.03449 0.02032

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.447
C2 0.000 0.000 1.956
Br3 0.000 1.868 -0.204
Br4 1.618 -0.934 -0.204
Br5 -1.618 -0.934 -0.204
H6 0.000 -1.030 2.325
H7 0.892 0.515 2.325
H8 -0.892 0.515 2.325

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50961.97841.97841.97842.14232.14232.1423
C21.50962.85602.85602.85601.09391.09391.0939
Br31.97842.85603.23603.23603.84663.00403.0040
Br41.97842.85603.23603.23603.00403.00403.8466
Br51.97842.85603.23603.23603.00403.84663.0040
H62.14231.09393.84663.00403.00401.78361.7836
H72.14231.09393.00403.00403.84661.78361.7836
H82.14231.09393.00403.84663.00401.78361.7836

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 109.717 C1 C2 H7 109.717
C1 C2 H8 109.717 C2 C1 Br3 109.200
C2 C1 Br4 109.200 C2 C1 Br5 109.200
Br3 C1 Br4 109.741 Br3 C1 Br5 109.741
Br4 C1 Br5 109.741 H6 C2 H7 109.224
H6 C2 H8 109.224 H7 C2 H8 109.224
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.792      
2 C -0.558      
3 Br 0.189      
4 Br 0.189      
5 Br 0.189      
6 H 0.261      
7 H 0.261      
8 H 0.261      


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 1.735 1.735
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.988 0.000 0.000
y 0.000 -66.988 0.000
z 0.000 0.000 -64.150
Traceless
 xyz
x -1.419 0.000 0.000
y 0.000 -1.419 0.000
z 0.000 0.000 2.839
Polar
3z2-r25.677
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 9.560 0.000 0.000
y 0.000 9.560 0.000
z 0.000 0.000 5.941


<r2> (average value of r2) Å2
<r2> 455.692
(<r2>)1/2 21.347