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

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-7799.150097
Energy at 298.15K-7799.161654
HF Energy-7799.150097
Nuclear repulsion energy967.845386
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 PBEPBEultrafine/aug-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 2985 2967 1.54      
2 A1 1329 1321 11.20      
3 A1 1040 1034 11.15      
4 A1 404 401 4.79      
5 A1 209 207 0.00      
6 A2 295 294 0.00      
7 E 3083 3065 1.93      
7 E 3083 3065 1.93      
8 E 1393 1384 3.10      
8 E 1393 1384 3.10      
9 E 1026 1020 51.89      
9 E 1026 1020 51.89      
10 E 578 574 100.76      
10 E 578 574 100.75      
11 E 270 269 3.23      
11 E 270 269 3.23      
12 E 143 142 0.00      
12 E 143 142 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9624.5 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9565.7 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.03474 0.03474 0.02062

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.471
C2 0.000 0.000 1.989
Br3 0.000 1.854 -0.208
Br4 1.606 -0.927 -0.208
Br5 -1.606 -0.927 -0.208
H6 0.000 -1.041 2.357
H7 0.902 0.521 2.357
H8 -0.902 0.521 2.357

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51821.97461.97461.97462.15442.15442.1544
C21.51822.87482.87482.87481.10421.10421.1042
Br31.97462.87483.21173.21173.86803.02823.0282
Br41.97462.87483.21173.21183.02823.02823.8680
Br51.97462.87483.21173.21183.02823.86803.0282
H62.15441.10423.86803.02823.02821.80321.8032
H72.15441.10423.02823.02823.86801.80321.8032
H82.15441.10423.02823.86803.02821.80321.8032

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 109.467 C1 C2 H7 109.467
C1 C2 H8 109.467 C2 C1 Br3 110.102
C2 C1 Br4 110.102 C2 C1 Br5 110.102
Br3 C1 Br4 108.833 Br3 C1 Br5 108.833
Br4 C1 Br5 108.833 H6 C2 H7 109.476
H6 C2 H8 109.476 H7 C2 H8 109.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.306      
2 C 1.088      
3 Br 0.211      
4 Br 0.211      
5 Br 0.211      
6 H -0.139      
7 H -0.139      
8 H -0.139      


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 1.701 1.701
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.995 0.000 0.000
y 0.000 -67.995 0.000
z 0.000 0.000 -64.565
Traceless
 xyz
x -1.715 0.000 0.000
y 0.000 -1.715 0.000
z 0.000 0.000 3.430
Polar
3z2-r26.860
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 14.975 0.000 0.000
y 0.000 14.976 0.000
z 0.000 0.000 12.154


<r2> (average value of r2) Å2
<r2> 452.310
(<r2>)1/2 21.268