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: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-7800.724727
Energy at 298.15K-7800.736381
HF Energy-7800.724727
Nuclear repulsion energy970.132702
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 B3LYP/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 3049 2947 2.48      
2 A1 1416 1368 6.53      
3 A1 1043 1008 8.98      
4 A1 405 392 4.62      
5 A1 213 205 0.00      
6 A2 305 295 0.00      
7 E 3127 3023 2.81      
7 E 3127 3023 2.81      
8 E 1478 1429 3.00      
8 E 1478 1429 3.00      
9 E 1090 1053 50.10      
9 E 1090 1053 50.08      
10 E 597 577 93.26      
10 E 597 577 93.22      
11 E 276 267 2.96      
11 E 276 267 2.96      
12 E 146 142 0.00      
12 E 146 142 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9929.1 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 9597.5 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 B3LYP/cc-pVTZ
ABC
0.03490 0.03490 0.02069

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/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 -0.926 -0.207
Br5 -1.603 -0.926 -0.207
H6 0.000 -1.025 2.345
H7 0.888 0.512 2.345
H8 -0.888 0.512 2.345

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51321.96941.96941.96942.14112.14112.1411
C21.51322.86352.86352.86351.08861.08861.0886
Br31.96942.86353.20683.20683.84483.01483.0148
Br41.96942.86353.20683.20683.01483.01483.8448
Br51.96942.86353.20683.20683.01483.84483.0148
H62.14111.08863.84483.01483.01481.77531.7753
H72.14111.08863.01483.01483.84481.77531.7753
H82.14111.08863.01483.84483.01481.77531.7753

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 109.683 C1 C2 H7 109.683
C1 C2 H8 109.683 C2 C1 Br3 109.929
C2 C1 Br4 109.929 C2 C1 Br5 109.929
Br3 C1 Br4 109.009 Br3 C1 Br5 109.009
Br4 C1 Br5 109.009 H6 C2 H7 109.259
H6 C2 H8 109.259 H7 C2 H8 109.259
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.097      
2 C -0.243      
3 Br -0.016      
4 Br -0.016      
5 Br -0.016      
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 1.703 1.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.839 0.000 0.000
y 0.000 -67.839 0.000
z 0.000 0.000 -64.584
Traceless
 xyz
x -1.628 0.000 0.000
y 0.000 -1.628 0.000
z 0.000 0.000 3.255
Polar
3z2-r26.511
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 13.031 0.000 0.000
y 0.000 13.030 0.000
z 0.000 0.000 10.182


<r2> (average value of r2) Å2
<r2> 450.515
(<r2>)1/2 21.225