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

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-7795.342292
Energy at 298.15K-7795.354114
HF Energy-7794.620323
Nuclear repulsion energy971.447087
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 QCISD/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3079 2954 5.05      
2 A1 1411 1354 3.07      
3 A1 1094 1050 5.28      
4 A1 420 403 4.50      
5 A1 222 213 0.04      
6 A2 328 314 0.00      
7 E 3181 3052 3.56      
7 E 3181 3052 3.56      
8 E 1478 1418 2.95      
8 E 1478 1418 2.95      
9 E 1096 1051 43.44      
9 E 1096 1051 43.44      
10 E 660 634 69.18      
10 E 660 634 69.19      
11 E 283 272 1.03      
11 E 283 272 1.03      
12 E 154 148 0.02      
12 E 154 148 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10129.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9718.6 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 QCISD/cc-pVDZ
ABC
0.03500 0.03500 0.02076

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

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 1.980
Br3 0.000 1.848 -0.206
Br4 1.601 -0.924 -0.206
Br5 -1.601 -0.924 -0.206
H6 0.000 -1.040 2.346
H7 0.901 0.520 2.346
H8 -0.901 0.520 2.346

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52721.96231.96231.96232.16032.16032.1603
C21.52722.86272.86272.86271.10271.10271.1027
Br31.96232.86273.20163.20163.85463.01503.0150
Br41.96232.86273.20163.20163.01503.01503.8546
Br51.96232.86273.20163.20163.01503.85463.0150
H62.16031.10273.85463.01503.01501.80141.8014
H72.16031.10273.01503.01503.85461.80141.8014
H82.16031.10273.01503.85463.01501.80141.8014

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 109.407 C1 C2 H7 109.407
C1 C2 H8 109.407 C2 C1 Br3 109.617
C2 C1 Br4 109.617 C2 C1 Br5 109.617
Br3 C1 Br4 109.325 Br3 C1 Br5 109.325
Br4 C1 Br5 109.325 H6 C2 H7 109.536
H6 C2 H8 109.536 H7 C2 H8 109.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability