return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/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 LSDA/cc-pVTZ
 hartrees
Energy at 0K-7791.792964
Energy at 298.15K-7791.804616
HF Energy-7791.792964
Nuclear repulsion energy987.715988
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 LSDA/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 2975 2943 0.23      
2 A1 1333 1318 22.92      
3 A1 1082 1070 10.23      
4 A1 415 411 4.79      
5 A1 216 214 0.04      
6 A2 302 299 0.00      
7 E 3068 3035 0.29      
7 E 3068 3035 0.29      
8 E 1387 1372 4.51      
8 E 1387 1372 4.51      
9 E 1034 1023 54.37      
9 E 1034 1023 54.35      
10 E 610 603 90.41      
10 E 610 603 90.38      
11 E 275 272 2.22      
11 E 275 272 2.22      
12 E 145 144 0.01      
12 E 145 144 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 9681.1 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 9575.6 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 LSDA/cc-pVTZ
ABC
0.03620 0.03620 0.02147

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.453
C2 0.000 0.000 1.942
Br3 0.000 1.818 -0.203
Br4 1.574 -0.909 -0.203
Br5 -1.574 -0.909 -0.203
H6 0.000 -1.035 2.312
H7 0.896 0.517 2.312
H8 -0.896 0.517 2.312

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.48911.93231.93231.93232.12722.12722.1272
C21.48912.81162.81162.81161.09881.09881.0988
Br31.93232.81163.14813.14813.80252.96942.9694
Br41.93232.81163.14813.14812.96942.96943.8025
Br51.93232.81163.14813.14812.96943.80252.9694
H62.12721.09883.80252.96942.96941.79231.7923
H72.12721.09882.96942.96943.80251.79231.7923
H82.12721.09882.96943.80252.96941.79231.7923

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 109.651 C1 C2 H7 109.651
C1 C2 H8 109.651 C2 C1 Br3 109.849
C2 C1 Br4 109.849 C2 C1 Br5 109.849
Br3 C1 Br4 109.091 Br3 C1 Br5 109.091
Br4 C1 Br5 109.091 H6 C2 H7 109.291
H6 C2 H8 109.291 H7 C2 H8 109.291
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 C -0.305      
3 Br 0.033      
4 Br 0.033      
5 Br 0.033      
6 H 0.152      
7 H 0.152      
8 H 0.152      


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 1.661 1.661
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.396 0.000 0.000
y 0.000 -67.396 0.000
z 0.000 0.000 -64.375
Traceless
 xyz
x -1.510 0.000 0.000
y 0.000 -1.510 0.000
z 0.000 0.000 3.020
Polar
3z2-r26.040
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 12.994 0.000 0.000
y 0.000 12.995 0.000
z 0.000 0.000 10.355


<r2> (average value of r2) Å2
<r2> 435.762
(<r2>)1/2 20.875