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

using model chemistry: PBE1PBE/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 PBE1PBE/STO-3G
 hartrees
Energy at 0K-7714.362878
Energy at 298.15K-7714.374480
HF Energy-7714.362878
Nuclear repulsion energy968.849624
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 PBE1PBE/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 3360 2964 0.12      
2 A1 1563 1379 0.61      
3 A1 1144 1009 20.43      
4 A1 441 389 9.31      
5 A1 243 214 1.15      
6 A2 281 248 0.00      
7 E 3539 3122 0.89      
7 E 3539 3122 0.89      
8 E 1663 1467 1.90      
8 E 1663 1467 1.90      
9 E 1195 1055 65.29      
9 E 1195 1055 65.29      
10 E 749 661 78.42      
10 E 749 661 78.42      
11 E 288 254 0.38      
11 E 288 254 0.38      
12 E 160 141 0.41      
12 E 160 141 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 11108.9 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 9799.2 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 PBE1PBE/STO-3G
ABC
0.03479 0.03479 0.02056

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.413
C2 0.000 0.000 1.972
Br3 0.000 1.857 -0.203
Br4 1.608 -0.929 -0.203
Br5 -1.608 -0.929 -0.203
H6 0.000 -1.032 2.348
H7 0.894 0.516 2.348
H8 -0.894 0.516 2.348

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.55901.95691.95691.95692.19252.19252.1925
C21.55902.86062.86062.86061.09851.09851.0985
Br31.95692.86063.21673.21673.85453.01753.0175
Br41.95692.86063.21673.21673.01753.01753.8545
Br51.95692.86063.21673.21673.01753.85453.0175
H62.19251.09853.85453.01753.01751.78821.7882
H72.19251.09853.01753.01753.85451.78821.7882
H82.19251.09853.01753.85453.01751.78821.7882

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 109.975 C1 C2 H7 109.975
C1 C2 H8 109.975 C2 C1 Br3 108.372
C2 C1 Br4 108.372 C2 C1 Br5 108.372
Br3 C1 Br4 110.548 Br3 C1 Br5 110.548
Br4 C1 Br5 110.548 H6 C2 H7 108.962
H6 C2 H8 108.962 H7 C2 H8 108.962
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.111      
2 C -0.231      
3 Br 0.013      
4 Br 0.013      
5 Br 0.013      
6 H 0.101      
7 H 0.101      
8 H 0.101      


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 1.510 1.510
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -62.518 0.000 0.000
y 0.000 -62.518 0.000
z 0.000 0.000 -59.320
Traceless
 xyz
x -1.599 0.000 0.000
y 0.000 -1.599 0.000
z 0.000 0.000 3.198
Polar
3z2-r26.397
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 5.404 0.000 0.000
y 0.000 5.404 0.000
z 0.000 0.000 2.613


<r2> (average value of r2) Å2
<r2> 448.968
(<r2>)1/2 21.189