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

using model chemistry: PBEPBEultrafine/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-7799.379943
Energy at 298.15K-7799.391487
HF Energy-7799.379943
Nuclear repulsion energy970.312679
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/cc-pVTZ
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 2982 2961 1.87      
2 A1 1353 1343 9.96      
3 A1 1030 1023 12.20      
4 A1 400 397 4.91      
5 A1 208 206 0.01      
6 A2 294 292 0.00      
7 E 3067 3045 2.33      
7 E 3067 3045 2.33      
8 E 1418 1409 3.02      
8 E 1418 1409 3.02      
9 E 1043 1036 51.90      
9 E 1043 1036 51.90      
10 E 578 574 99.91      
10 E 578 574 99.91      
11 E 267 266 2.94      
11 E 267 266 2.94      
12 E 141 140 0.00      
12 E 141 140 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9648.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 9581.6 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 PBEPBEultrafine/cc-pVTZ
ABC
0.03492 0.03492 0.02071

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.465
C2 0.000 0.000 1.978
Br3 0.000 1.851 -0.207
Br4 1.603 -0.925 -0.207
Br5 -1.603 -0.925 -0.207
H6 0.000 -1.034 2.346
H7 0.895 0.517 2.346
H8 -0.895 0.517 2.346

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51311.96871.96871.96872.14692.14692.1469
C21.51312.86312.86312.86311.09731.09731.0973
Br31.96872.86313.20563.20563.85193.01643.0164
Br41.96872.86313.20563.20563.01643.01643.8519
Br51.96872.86313.20563.20563.01643.85193.0164
H62.14691.09733.85193.01643.01641.79021.7902
H72.14691.09733.01643.01643.85191.79021.7902
H82.14691.09733.01643.85193.01641.79021.7902

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 109.625 C1 C2 H7 109.625
C1 C2 H8 109.625 C2 C1 Br3 109.939
C2 C1 Br4 109.939 C2 C1 Br5 109.939
Br3 C1 Br4 109.000 Br3 C1 Br5 109.000
Br4 C1 Br5 109.000 H6 C2 H7 109.317
H6 C2 H8 109.317 H7 C2 H8 109.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.143      
2 C -0.234      
3 Br -0.003      
4 Br -0.003      
5 Br -0.003      
6 H 0.129      
7 H 0.129      
8 H 0.129      


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 1.677 1.677
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.565 0.000 0.000
y 0.000 -67.565 0.000
z 0.000 0.000 -64.404
Traceless
 xyz
x -1.581 0.000 0.000
y 0.000 -1.581 0.000
z 0.000 0.000 3.161
Polar
3z2-r26.323
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 13.362 0.000 0.000
y 0.000 13.362 0.000
z 0.000 0.000 10.516


<r2> (average value of r2) Å2
<r2> 450.160
(<r2>)1/2 21.217