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

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-2653.493067
Energy at 298.15K 
HF Energy-2653.493067
Nuclear repulsion energy162.905039
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 B3LYP/aug-cc-pVTZ
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' 3102 3001 23.49      
2 A' 3086 2986 1.04      
3 A' 3027 2928 18.98      
4 A' 1499 1450 2.37      
5 A' 1487 1438 1.22      
6 A' 1413 1367 4.46      
7 A' 1272 1231 52.93      
8 A' 1075 1040 0.11      
9 A' 971 939 17.59      
10 A' 547 529 17.55      
11 A' 282 273 2.29      
12 A" 3157 3055 6.50      
13 A" 3112 3011 8.34      
14 A" 1483 1435 9.75      
15 A" 1265 1223 0.20      
16 A" 1030 997 0.04      
17 A" 773 748 3.49      
18 A" 248 240 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14413.7 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 13945.3 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 B3LYP/aug-cc-pVTZ
ABC
1.01244 0.12388 0.11513

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.045 0.000
C2 0.598 -1.087 0.000
Br3 0.000 0.802 0.000
H4 1.216 -1.182 0.886
H5 1.216 -1.182 -0.886
H6 -0.196 -3.072 0.000
H7 -1.195 -1.911 0.883
H8 -1.195 -1.911 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51192.90382.17442.17441.09321.08881.0888
C21.51191.98121.08491.08492.13692.16112.1611
Br32.90381.98122.49012.49013.87813.09303.0930
H42.17441.08492.49011.77222.51932.51853.0779
H52.17441.08492.49011.77222.51933.07792.5185
H61.09322.13693.87812.51932.51931.76761.7676
H71.08882.16113.09302.51853.07791.76761.7664
H81.08882.16113.09303.07792.51851.76761.7664

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 111.766 C1 C2 H4 112.681
C1 C2 H5 112.681 C2 C1 H6 109.168
C2 C1 H7 111.360 C2 C1 H8 111.360
Br3 C2 H4 104.809 Br3 C2 H5 104.809
H4 C2 H5 109.525 H6 C1 H7 108.215
H6 C1 H8 108.215 H7 C1 H8 108.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.615      
2 C -0.329      
3 Br -0.111      
4 H 0.195      
5 H 0.195      
6 H 0.193      
7 H 0.237      
8 H 0.237      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.464 -2.192 0.000 2.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.246 -0.970 0.000
y -0.970 -30.358 0.000
z 0.000 0.000 -32.515
Traceless
 xyz
x -0.810 -0.970 0.000
y -0.970 2.022 0.000
z 0.000 0.000 -1.213
Polar
3z2-r2-2.425
x2-y2-1.888
xy-0.970
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.796 -0.042 0.000
y -0.042 9.324 0.000
z 0.000 0.000 6.391


<r2> (average value of r2) Å2
<r2> 107.110
(<r2>)1/2 10.349