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

using model chemistry: B3LYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-2650.959859
Energy at 298.15K 
HF Energy-2650.959859
Nuclear repulsion energy162.509664
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/6-31+G**
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' 3115 3003 27.81      
2 A' 3102 2991 0.38      
3 A' 3038 2929 21.32      
4 A' 1504 1450 3.23      
5 A' 1493 1440 1.13      
6 A' 1420 1369 5.87      
7 A' 1289 1243 68.58      
8 A' 1080 1042 0.12      
9 A' 976 941 17.89      
10 A' 549 530 19.25      
11 A' 287 277 2.42      
12 A" 3174 3060 7.97      
13 A" 3133 3020 8.85      
14 A" 1490 1437 10.93      
15 A" 1270 1225 0.49      
16 A" 1045 1007 0.21      
17 A" 780 752 4.09      
18 A" 259 250 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14501.5 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 13982.3 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/6-31+G**
ABC
1.00787 0.12325 0.11457

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.052 0.000
C2 0.598 -1.087 0.000
Br3 0.000 0.803 0.000
H4 1.219 -1.186 0.890
H5 1.219 -1.186 -0.890
H6 -0.190 -3.080 0.000
H7 -1.199 -1.920 0.887
H8 -1.199 -1.920 -0.887

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51722.91202.18062.18061.09751.09341.0934
C21.51721.98291.09001.09002.14272.16982.1698
Br32.91201.98292.49722.49723.88803.10463.1046
H42.18061.09002.49721.78032.52282.52703.0893
H52.18061.09002.49721.78032.52283.08932.5270
H61.09752.14273.88802.52282.52281.77531.7753
H71.09342.16983.10462.52703.08931.77531.7738
H81.09342.16983.10463.08932.52701.77531.7738

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 111.921 C1 C2 H4 112.484
C1 C2 H5 112.484 C2 C1 H6 109.014
C2 C1 H7 111.406 C2 C1 H8 111.406
Br3 C2 H4 104.965 Br3 C2 H5 104.965
H4 C2 H5 109.502 H6 C1 H7 108.247
H6 C1 H8 108.247 H7 C1 H8 108.420
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.423      
2 C -0.244      
3 Br -0.178      
4 H 0.178      
5 H 0.178      
6 H 0.153      
7 H 0.168      
8 H 0.168      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.498 -2.280 0.000 2.333
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.314 -1.068 0.000
y -1.068 -30.289 0.000
z 0.000 0.000 -32.661
Traceless
 xyz
x -0.838 -1.068 0.000
y -1.068 2.199 0.000
z 0.000 0.000 -1.360
Polar
3z2-r2-2.720
x2-y2-2.025
xy-1.068
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.833 -0.184 0.000
y -0.184 8.426 0.000
z 0.000 0.000 5.535


<r2> (average value of r2) Å2
<r2> 107.598
(<r2>)1/2 10.373