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

using model chemistry: B3LYP/6-31G

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/6-31G
 hartrees
Energy at 0K-2650.785288
Energy at 298.15K 
HF Energy-2650.785288
Nuclear repulsion energy160.838150
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/6-31G
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' 3135 3016 28.44      
2 A' 3119 3000 2.65      
3 A' 3044 2929 19.56      
4 A' 1544 1485 5.24      
5 A' 1525 1467 2.47      
6 A' 1467 1411 7.21      
7 A' 1299 1250 60.64      
8 A' 1101 1059 0.57      
9 A' 1004 966 20.06      
10 A' 530 510 20.92      
11 A' 284 273 3.64      
12 A" 3207 3086 13.43      
13 A" 3148 3028 11.43      
14 A" 1530 1472 10.27      
15 A" 1292 1243 1.02      
16 A" 1041 1001 0.01      
17 A" 794 764 6.72      
18 A" 259 249 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14661.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 14104.4 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/6-31G
ABC
0.97329 0.12156 0.11269

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.584 -2.051 0.000
C2 0.616 -1.125 0.000
Br3 0.000 0.811 0.000
H4 1.231 -1.214 0.895
H5 1.231 -1.214 -0.895
H6 -0.244 -3.096 0.000
H7 -1.206 -1.893 0.886
H8 -1.206 -1.893 -0.886

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51632.92102.19052.19051.09861.09401.0940
C21.51632.03181.08941.08942.15022.16682.1668
Br32.92102.03182.53322.53323.91413.09033.0903
H42.19051.08942.53321.78972.55322.52983.0940
H52.19051.08942.53321.78972.55323.09402.5298
H61.09862.15023.91412.55322.55321.77671.7767
H71.09402.16683.09032.52983.09401.77671.7730
H81.09402.16683.09033.09402.52981.77671.7730

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 109.972 C1 C2 H4 113.408
C1 C2 H5 113.408 C2 C1 H6 109.594
C2 C1 H7 111.190 C2 C1 H8 111.190
Br3 C2 H4 104.412 Br3 C2 H5 104.412
H4 C2 H5 110.455 H6 C1 H7 108.255
H6 C1 H8 108.255 H7 C1 H8 108.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.384      
2 C -0.455      
3 Br -0.039      
4 H 0.200      
5 H 0.200      
6 H 0.150      
7 H 0.164      
8 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.521 -2.364 0.000 2.421
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.594 -0.886 0.000
y -0.886 -29.947 0.000
z 0.000 0.000 -32.027
Traceless
 xyz
x -0.607 -0.886 0.000
y -0.886 1.864 0.000
z 0.000 0.000 -1.257
Polar
3z2-r2-2.513
x2-y2-1.647
xy-0.886
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.908 -0.534 0.000
y -0.534 7.316 0.000
z 0.000 0.000 3.570


<r2> (average value of r2) Å2
<r2> 108.528
(<r2>)1/2 10.418