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

using model chemistry: B3LYP/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-2653.384710
Energy at 298.15K 
HF Energy-2653.384710
Nuclear repulsion energy162.302882
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/cc-pVDZ
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' 3107 3014 23.66      
2 A' 3091 2999 4.21      
3 A' 3029 2938 19.05      
4 A' 1471 1427 1.70      
5 A' 1461 1417 0.73      
6 A' 1391 1349 2.40      
7 A' 1256 1219 61.22      
8 A' 1076 1044 0.24      
9 A' 972 943 16.93      
10 A' 550 533 18.05      
11 A' 283 274 2.60      
12 A" 3162 3067 11.29      
13 A" 3126 3032 6.42      
14 A" 1452 1409 8.01      
15 A" 1248 1211 0.53      
16 A" 1017 986 0.04      
17 A" 769 746 4.43      
18 A" 258 250 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14359.9 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 13929.1 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/cc-pVDZ
ABC
1.00168 0.12317 0.11449

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.051 0.000
C2 0.598 -1.089 0.000
Br3 0.000 0.804 0.000
H4 1.226 -1.186 0.895
H5 1.226 -1.186 -0.895
H6 -0.191 -3.087 0.000
H7 -1.203 -1.917 0.892
H8 -1.203 -1.917 -0.892

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51632.91162.18802.18801.10451.10041.1004
C21.51631.98461.09761.09762.14892.17432.1743
Br32.91161.98462.50242.50243.89553.10553.1055
H42.18801.09762.50241.79042.53472.53663.1032
H52.18801.09762.50241.79042.53473.10322.5366
H61.10452.14893.89552.53472.53471.78631.7863
H71.10042.17433.10552.53663.10321.78631.7848
H81.10042.17433.10553.10322.53661.78631.7848

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 111.846 C1 C2 H4 112.684
C1 C2 H5 112.684 C2 C1 H6 109.143
C2 C1 H7 111.395 C2 C1 H8 111.395
Br3 C2 H4 104.882 Br3 C2 H5 104.882
H4 C2 H5 109.300 H6 C1 H7 108.212
H6 C1 H8 108.212 H7 C1 H8 108.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.007      
2 C -0.110      
3 Br -0.135      
4 H 0.070      
5 H 0.070      
6 H 0.030      
7 H 0.041      
8 H 0.041      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.448 -2.039 0.000 2.088
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.669 -0.954 0.000
y -0.954 -29.723 0.000
z 0.000 0.000 -31.968
Traceless
 xyz
x -0.823 -0.954 0.000
y -0.954 2.095 0.000
z 0.000 0.000 -1.272
Polar
3z2-r2-2.544
x2-y2-1.946
xy-0.954
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.825 -0.261 0.000
y -0.261 7.705 0.000
z 0.000 0.000 4.419


<r2> (average value of r2) Å2
<r2> 107.333
(<r2>)1/2 10.360