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

using model chemistry: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-7801.042954
Energy at 298.15K-7801.054699
HF Energy-7801.042954
Nuclear repulsion energy977.621833
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 mPW1PW91/TZVP
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 3076 2935 1.98      
2 A1 1421 1356 8.23      
3 A1 1076 1026 8.91      
4 A1 416 397 5.15      
5 A1 218 208 0.02      
6 A2 320 305 0.00      
7 E 3167 3021 1.73      
7 E 3167 3021 1.73      
8 E 1478 1410 3.40      
8 E 1478 1410 3.40      
9 E 1096 1046 57.44      
9 E 1096 1046 57.41      
10 E 628 599 93.60      
10 E 628 599 93.66      
11 E 280 267 2.20      
11 E 280 267 2.20      
12 E 149 143 0.00      
12 E 149 143 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10060.5 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 9597.7 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 mPW1PW91/TZVP
ABC
0.03544 0.03544 0.02102

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.456
C2 0.000 0.000 1.963
Br3 0.000 1.837 -0.205
Br4 1.591 -0.919 -0.205
Br5 -1.591 -0.919 -0.205
H6 0.000 -1.025 2.331
H7 0.888 0.513 2.331
H8 -0.888 0.513 2.331

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50691.95251.95251.95252.13662.13662.1366
C21.50692.84182.84182.84181.08921.08921.0892
Br31.95252.84183.18193.18193.82412.99552.9955
Br41.95252.84183.18193.18192.99552.99553.8241
Br51.95252.84183.18193.18192.99553.82412.9955
H62.13661.08923.82412.99552.99551.77591.7759
H72.13661.08922.99552.99553.82411.77591.7759
H82.13661.08922.99553.82412.99551.77591.7759

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 109.724 C1 C2 H7 109.724
C1 C2 H8 109.724 C2 C1 Br3 109.799
C2 C1 Br4 109.799 C2 C1 Br5 109.799
Br3 C1 Br4 109.141 Br3 C1 Br5 109.141
Br4 C1 Br5 109.141 H6 C2 H7 109.218
H6 C2 H8 109.218 H7 C2 H8 109.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.040      
2 C -0.353      
3 Br -0.025      
4 Br -0.025      
5 Br -0.025      
6 H 0.156      
7 H 0.156      
8 H 0.156      


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 1.715 1.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.144 0.000 0.000
y 0.000 -67.144 0.000
z 0.000 0.000 -64.257
Traceless
 xyz
x -1.443 0.000 0.000
y 0.000 -1.443 0.000
z 0.000 0.000 2.887
Polar
3z2-r25.773
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 12.288 0.000 0.000
y 0.000 12.288 0.000
z 0.000 0.000 9.259


<r2> (average value of r2) Å2
<r2> 443.923
(<r2>)1/2 21.069