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

using model chemistry: QCISD(T)/aug-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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-7795.438184
Energy at 298.15K-7795.449942
HF Energy-7794.634826
Nuclear repulsion energy971.251185
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(T)/aug-cc-pVDZ
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 3036 2968        
2 A1 1390 1359        
3 A1 1077 1053        
4 A1 416 407        
5 A1 218 214        
6 A2 304 297        
7 E 3134 3064        
7 E 3134 3064        
8 E 1458 1426        
8 E 1457 1425        
9 E 1074 1051        
9 E 1074 1050        
10 E 645 631        
10 E 645 631        
11 E 281 275        
11 E 281 275        
12 E 152 149        
12 E 152 149        

Unscaled Zero Point Vibrational Energy (zpe) 9965.0 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 9743.8 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 QCISD(T)/aug-cc-pVDZ
ABC
0.03498 0.03498 0.02077

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.458
C2 0.000 0.000 1.987
Br3 0.000 1.848 -0.207
Br4 1.600 -0.924 -0.207
Br5 -1.600 -0.924 -0.207
H6 0.000 -1.041 2.351
H7 0.902 0.521 2.351
H8 -0.902 0.521 2.351

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52881.96361.96361.96362.16102.16102.1610
C21.52882.86802.86802.86801.10311.10311.1031
Br31.96362.86803.20043.20043.85873.01983.0198
Br41.96362.86803.20043.20043.01983.01983.8587
Br51.96362.86803.20043.20043.01983.85873.0198
H62.16101.10313.85873.01983.01981.80311.8031
H72.16101.10313.01983.01983.85871.80311.8031
H82.16101.10313.01983.85873.01981.80311.8031

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 109.316 C1 C2 H7 109.316
C1 C2 H8 109.316 C2 C1 Br3 109.782
C2 C1 Br4 109.782 C2 C1 Br5 109.782
Br3 C1 Br4 109.158 Br3 C1 Br5 109.158
Br4 C1 Br5 109.158 H6 C2 H7 109.626
H6 C2 H8 109.626 H7 C2 H8 109.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability