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

using model chemistry: wB97X-D/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 wB97X-D/cc-pVTZ
 hartrees
Energy at 0K-2653.494091
Energy at 298.15K 
HF Energy-2653.494091
Nuclear repulsion energy164.217891
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 wB97X-D/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' 3130 2993 24.07 73.25 0.46 0.63
2 A' 3114 2977 3.47 123.63 0.19 0.31
3 A' 3054 2919 17.97 175.09 0.04 0.08
4 A' 1505 1439 2.61 5.84 0.75 0.86
5 A' 1495 1430 1.96 7.44 0.74 0.85
6 A' 1422 1360 5.45 1.84 0.71 0.83
7 A' 1294 1237 49.76 3.97 0.53 0.70
8 A' 1088 1040 0.16 3.61 0.23 0.37
9 A' 988 945 15.59 3.78 0.74 0.85
10 A' 594 568 14.18 18.27 0.22 0.36
11 A' 293 280 1.68 2.36 0.40 0.57
12 A" 3182 3042 8.55 29.56 0.75 0.86
13 A" 3143 3005 7.71 77.15 0.75 0.86
14 A" 1493 1427 9.70 7.82 0.75 0.86
15 A" 1275 1219 0.41 1.87 0.75 0.86
16 A" 1047 1001 0.08 2.85 0.75 0.86
17 A" 781 747 4.18 0.08 0.75 0.86
18 A" 256 245 0.01 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14577.2 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 13935.8 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 wB97X-D/cc-pVTZ
ABC
1.01793 0.12619 0.11719

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.030 0.000
C2 0.595 -1.068 0.000
Br3 0.000 0.794 0.000
H4 1.215 -1.173 0.885
H5 1.215 -1.173 -0.885
H6 -0.191 -3.054 0.000
H7 -1.193 -1.895 0.883
H8 -1.193 -1.895 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51162.88072.16912.16911.09171.08871.0887
C21.51161.95401.08551.08552.13612.15882.1588
Br32.88071.95402.47532.47533.85213.07093.0709
H42.16911.08552.47531.76952.50942.51353.0730
H52.16911.08552.47531.76952.50943.07302.5135
H61.09172.13613.85212.50942.50941.76801.7680
H71.08872.15883.07092.51353.07301.76801.7664
H81.08872.15883.07093.07302.51351.76801.7664

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 111.815 C1 C2 H4 112.241
C1 C2 H5 112.241 C2 C1 H6 109.217
C2 C1 H7 111.201 C2 C1 H8 111.201
Br3 C2 H4 105.458 Br3 C2 H5 105.458
H4 C2 H5 109.193 H6 C1 H7 108.354
H6 C1 H8 108.354 H7 C1 H8 108.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.253      
2 C -0.130      
3 Br -0.147      
4 H 0.115      
5 H 0.115      
6 H 0.094      
7 H 0.103      
8 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.469 -2.126 0.000 2.177
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.844 -0.989 0.000
y -0.989 -29.993 0.000
z 0.000 0.000 -32.117
Traceless
 xyz
x -0.789 -0.989 0.000
y -0.989 1.988 0.000
z 0.000 0.000 -1.198
Polar
3z2-r2-2.397
x2-y2-1.851
xy-0.989
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.637 -0.186 0.000
y -0.186 8.373 0.000
z 0.000 0.000 5.209


<r2> (average value of r2) Å2
<r2> 105.463
(<r2>)1/2 10.270