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 CH2BrCBr3 (1,1,1,2-tetrabromo ethane)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3
 hartrees
Energy at 0K-10371.589202
Energy at 298.15K-10371.580209
HF Energy-10365.285847
Nuclear repulsion energy1569.154372
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 HF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3317 3125 4.36 72.88 0.09 0.16
2 A' 1612 1518 4.16 8.78 0.75 0.85
3 A' 1411 1330 33.94 12.08 0.46 0.63
4 A' 1145 1079 3.29 7.61 0.21 0.35
5 A' 815 768 44.74 50.52 0.53 0.70
6 A' 683 643 74.23 4.46 0.12 0.21
7 A' 483 455 12.30 9.67 0.14 0.25
8 A' 256 241 0.19 11.00 0.11 0.19
9 A' 207 195 0.14 3.57 0.74 0.85
10 A' 163 154 0.02 1.56 0.63 0.77
11 A' 107 100 0.22 0.47 0.71 0.83
12 A" 3394 3198 0.74 53.20 0.75 0.86
13 A" 1328 1251 12.61 4.40 0.75 0.86
14 A" 1013 955 41.96 2.29 0.75 0.86
15 A" 713 672 54.92 14.47 0.75 0.86
16 A" 293 276 1.75 1.27 0.75 0.86
17 A" 172 162 0.20 1.52 0.75 0.86
18 A" 89 84 0.40 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8600.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 8103.4 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 MP2=FULL/6-31G*
ABC
0.02491 0.01490 0.01345

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.169 0.362 0.000
C2 -1.346 0.442 0.000
Br3 0.822 2.206 0.000
Br4 0.822 -0.542 1.588
Br5 0.822 -0.542 -1.588
Br6 -2.168 -1.315 0.000
H7 -1.682 0.961 0.898
H8 -1.682 0.961 -0.898

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 Br6 H7 H8
C11.51761.95591.94011.94012.87722.14312.1431
C21.51762.79532.86172.86171.93971.09031.0903
Br31.95592.79533.17363.17364.61962.93712.9371
Br41.94012.86173.17363.17513.47293.00123.8351
Br51.94012.86173.17363.17513.47293.83513.0012
Br62.87721.93974.61963.47293.47292.49482.4948
H72.14311.09032.93713.00123.83512.49481.7955
H82.14311.09032.93713.83513.00122.49481.7955

picture of 1,1,1,2-tetrabromo ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br6 115.486 C1 C2 H7 109.088
C1 C2 H8 109.088 C2 C1 Br3 105.458
C2 C1 Br4 111.675 C2 C1 Br5 111.675
Br3 C1 Br4 108.807 Br3 C1 Br5 108.807
Br4 C1 Br5 110.238 Br6 C2 H7 106.492
Br6 C2 H8 106.492 H7 C2 H8 110.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability