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: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-7804.335004
Energy at 298.15K-7804.346533
HF Energy-7804.335004
Nuclear repulsion energy966.119257
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 B97D3/6-311+G(3df,2p)
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 2995 2956 3.34      
2 A1 1379 1361 7.12      
3 A1 1020 1007 11.20      
4 A1 395 390 4.89      
5 A1 206 203 0.00      
6 A2 302 298 0.00      
7 E 3080 3040 3.57      
7 E 3080 3040 3.57      
8 E 1447 1428 2.99      
8 E 1447 1428 2.98      
9 E 1059 1045 49.34      
9 E 1059 1045 49.28      
10 E 557 550 107.02      
10 E 557 550 106.85      
11 E 270 266 4.45      
11 E 270 266 4.45      
12 E 142 140 0.03      
12 E 142 140 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 9704.0 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 9577.8 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 B97D3/6-311+G(3df,2p)
ABC
0.03461 0.03461 0.02050

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.466
C2 0.000 0.000 1.981
Br3 0.000 1.860 -0.207
Br4 1.611 -0.930 -0.207
Br5 -1.611 -0.930 -0.207
H6 0.000 -1.030 2.346
H7 0.892 0.515 2.346
H8 -0.892 0.515 2.346

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51491.97791.97791.97792.14342.14342.1434
C21.51492.87142.87142.87141.09261.09261.0926
Br31.97792.87143.22173.22173.85563.01983.0198
Br41.97792.87143.22173.22173.01983.01983.8556
Br51.97792.87143.22173.22173.01983.85563.0198
H62.14341.09263.85563.01983.01981.78371.7837
H72.14341.09263.01983.01983.85561.78371.7837
H82.14341.09263.01983.85563.01981.78371.7837

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 109.505 C1 C2 H7 109.505
C1 C2 H8 109.505 C2 C1 Br3 109.496
C2 C1 Br4 109.496 C2 C1 Br5 109.496
Br3 C1 Br4 109.446 Br3 C1 Br5 109.446
Br4 C1 Br5 109.446 H6 C2 H7 109.437
H6 C2 H8 109.437 H7 C2 H8 109.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.357      
2 C -0.180      
3 Br 0.020      
4 Br 0.020      
5 Br 0.020      
6 H 0.159      
7 H 0.159      
8 H 0.159      


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 1.718 1.718
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.585 0.000 0.000
y 0.000 -67.585 0.000
z 0.000 0.000 -63.993
Traceless
 xyz
x -1.796 0.000 0.000
y 0.000 -1.796 0.000
z 0.000 0.000 3.592
Polar
3z2-r27.185
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 15.057 0.000 0.000
y 0.000 15.055 0.000
z 0.000 0.000 12.132


<r2> (average value of r2) Å2
<r2> 453.767
(<r2>)1/2 21.302