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

using model chemistry: B2PLYP=FULLultrafine/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/STO-3G
 hartrees
Energy at 0K-2623.811384
Energy at 298.15K 
HF Energy-2623.771072
Nuclear repulsion energy163.065175
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 B2PLYP=FULLultrafine/STO-3G
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' 3525 3525 0.50 35.82 0.73 0.84
2 A' 3374 3374 2.45 36.21 0.15 0.26
3 A' 3355 3355 1.02 47.41 0.02 0.04
4 A' 1709 1709 1.22 7.65 0.74 0.85
5 A' 1678 1678 1.42 20.78 0.75 0.86
6 A' 1595 1595 0.25 5.82 0.66 0.80
7 A' 1450 1450 38.43 1.53 0.46 0.63
8 A' 1173 1173 2.79 4.88 0.54 0.70
9 A' 1088 1088 6.35 5.19 0.73 0.84
10 A' 705 705 4.45 13.23 0.30 0.47
11 A' 304 304 0.98 2.11 0.55 0.71
12 A" 3536 3536 1.05 16.65 0.75 0.86
13 A" 3488 3488 1.38 38.26 0.75 0.86
14 A" 1700 1700 2.84 17.17 0.75 0.86
15 A" 1400 1400 0.04 12.10 0.75 0.86
16 A" 1155 1155 1.42 4.93 0.75 0.86
17 A" 838 838 2.81 0.43 0.75 0.86
18 A" 239 239 0.09 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16154.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16154.9 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 B2PLYP=FULLultrafine/STO-3G
ABC
0.99679 0.12421 0.11530

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.579 -2.058 0.000
C2 0.601 -1.046 0.000
Br3 0.000 0.799 0.000
H4 1.232 -1.202 0.892
H5 1.232 -1.202 -0.892
H6 -0.183 -3.086 0.000
H7 -1.207 -1.925 0.893
H8 -1.207 -1.925 -0.893

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.55462.91512.19302.19301.10101.09971.0997
C21.55461.94021.10401.10402.18532.20002.2000
Br32.91511.94022.51342.51343.88883.11073.1107
H42.19301.10402.51341.78482.51962.54433.1081
H52.19301.10402.51341.78482.51963.10812.5443
H61.10102.18533.88882.51962.51961.78651.7865
H71.09972.20003.11072.54433.10811.78651.7855
H81.09972.20003.11073.10812.54431.78651.7855

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 112.583 C1 C2 H4 109.991
C1 C2 H5 109.991 C2 C1 H6 109.565
C2 C1 H7 110.795 C2 C1 H8 110.795
Br3 C2 H4 108.139 Br3 C2 H5 108.139
H4 C2 H5 107.859 H6 C1 H7 108.540
H6 C1 H8 108.540 H7 C1 H8 108.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.198      
2 C -0.161      
3 Br -0.035      
4 H 0.084      
5 H 0.084      
6 H 0.074      
7 H 0.076      
8 H 0.076      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.382 -1.518 0.000 1.565
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.230 -0.572 -0.000
y -0.572 -28.586 0.014
z -0.000 0.014 -29.390
Traceless
 xyz
x -0.242 -0.572 -0.000
y -0.572 0.725 0.014
z -0.000 0.014 -0.483
Polar
3z2-r2-0.965
x2-y2-0.644
xy-0.572
xz-0.000
yz0.014


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.819 -0.432 0.000
y -0.432 3.701 0.000
z 0.000 0.000 1.657


<r2> (average value of r2) Å2
<r2> 105.648
(<r2>)1/2 10.279