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

using model chemistry: B3LYP/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-2653.447641
Energy at 298.15K 
HF Energy-2653.447641
Nuclear repulsion energy162.991386
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/Def2TZVPP
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' 3103 2987 25.67 70.43 0.11 0.19
2 A' 3089 2973 0.55 125.49 0.34 0.51
3 A' 3028 2915 19.24 200.73 0.08 0.14
4 A' 1501 1445 2.41 4.91 0.75 0.85
5 A' 1490 1434 1.22 7.99 0.74 0.85
6 A' 1417 1364 4.45 2.01 0.70 0.82
7 A' 1277 1229 53.00 5.74 0.49 0.66
8 A' 1078 1037 0.10 3.95 0.23 0.37
9 A' 974 937 17.27 3.73 0.73 0.84
10 A' 554 533 16.89 19.63 0.25 0.40
11 A' 284 273 2.28 2.89 0.37 0.54
12 A" 3160 3041 8.31 32.35 0.75 0.86
13 A" 3115 2999 8.29 74.97 0.75 0.86
14 A" 1485 1430 9.58 8.11 0.75 0.86
15 A" 1267 1220 0.31 1.78 0.75 0.86
16 A" 1033 995 0.11 2.67 0.75 0.86
17 A" 776 747 3.76 0.05 0.75 0.86
18 A" 256 246 0.01 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14442.2 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 13902.1 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/Def2TZVPP
ABC
1.01327 0.12402 0.11526

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.044 0.000
C2 0.597 -1.086 0.000
Br3 0.000 0.801 0.000
H4 1.216 -1.182 0.886
H5 1.216 -1.182 -0.886
H6 -0.194 -3.071 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
C11.51172.90242.17412.17411.09351.08911.0891
C21.51171.97901.08531.08532.13702.16152.1615
Br32.90241.97902.48912.48913.87673.09283.0928
H42.17411.08532.48911.77222.51872.51903.0784
H52.17411.08532.48911.77222.51873.07842.5190
H61.09352.13703.87672.51872.51871.76781.7678
H71.08912.16153.09282.51903.07841.76781.7666
H81.08912.16153.09283.07842.51901.76781.7666

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 111.810 C1 C2 H4 112.650
C1 C2 H5 112.650 C2 C1 H6 109.176
C2 C1 H7 111.393 C2 C1 H8 111.393
Br3 C2 H4 104.857 Br3 C2 H5 104.857
H4 C2 H5 109.459 H6 C1 H7 108.188
H6 C1 H8 108.188 H7 C1 H8 108.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.222      
2 C -0.146      
3 Br -0.160      
4 H 0.129      
5 H 0.129      
6 H 0.083      
7 H 0.093      
8 H 0.093      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.464 -2.164 0.000 2.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.128 -0.969 0.000
y -0.969 -30.295 0.000
z 0.000 0.000 -32.399
Traceless
 xyz
x -0.781 -0.969 0.000
y -0.969 1.969 0.000
z 0.000 0.000 -1.187
Polar
3z2-r2-2.374
x2-y2-1.833
xy-0.969
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.972 -0.148 0.000
y -0.148 8.781 0.000
z 0.000 0.000 5.577


<r2> (average value of r2) Å2
<r2> 106.965
(<r2>)1/2 10.342