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All results from a given calculation for C2H5Br (Ethyl bromide)

using model chemistry: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-2651.804709
Energy at 298.15K-2651.813039
HF Energy-2651.142481
Nuclear repulsion energy165.895412
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 MP2=FULL/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3172 3011 16.02      
2 A' 3150 2991 6.18      
3 A' 3097 2940 14.92      
4 A' 1524 1446 2.16      
5 A' 1507 1431 1.57      
6 A' 1425 1353 5.42      
7 A' 1303 1237 43.43      
8 A' 1106 1050 0.03      
9 A' 1002 951 11.67      
10 A' 618 587 9.58      
11 A' 294 279 1.21      
12 A" 3206 3044 8.03      
13 A" 3181 3020 2.84      
14 A" 1514 1438 9.43      
15 A" 1288 1223 0.41      
16 A" 1057 1003 0.18      
17 A" 780 741 3.55      
18 A" 288 273 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14755.2 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 14008.5 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 MP2=FULL/cc-pVTZ
ABC
1.01686 0.12965 0.12010

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -1.994 0.000
C2 0.599 -1.053 0.000
Br3 0.000 0.780 0.000
H4 1.211 -1.156 0.884
H5 1.211 -1.156 -0.884
H6 -0.211 -3.019 0.000
H7 -1.186 -1.842 0.880
H8 -1.186 -1.842 -0.880

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50302.83252.16032.16031.08711.08361.0836
C21.50301.92831.08061.08062.12652.14142.1414
Br32.83251.92832.44902.44903.80493.00943.0094
H42.16031.08062.44901.76892.50512.49413.0550
H52.16031.08062.44901.76892.50513.05502.4941
H61.08712.12653.80492.50512.50511.76411.7641
H71.08362.14143.00942.49413.05501.76411.7596
H81.08362.14143.00943.05502.49411.76411.7596

picture of Ethyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br3 110.668 C1 C2 H4 112.447
C1 C2 H5 112.447 C2 C1 H6 109.324
C2 C1 H7 110.722 C2 C1 H8 110.722
Br3 C2 H4 105.475 Br3 C2 H5 105.475
H4 C2 H5 109.874 H6 C1 H7 108.723
H6 C1 H8 108.723 H7 C1 H8 108.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability