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

using model chemistry: B3LYP/cc-pVTZ-PP

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-pVTZ-PP
 hartrees
Energy at 0K-496.182725
Energy at 298.15K 
HF Energy-496.182725
Nuclear repulsion energy126.892510
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-pVTZ-PP
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' 3101 3101 25.75 70.75 0.08 0.15
2 A' 3085 3085 1.15 124.78 0.38 0.55
3 A' 3025 3025 19.70 198.70 0.08 0.15
4 A' 1501 1501 2.30 5.46 0.75 0.86
5 A' 1490 1490 1.14 7.81 0.74 0.85
6 A' 1416 1416 4.47 2.44 0.65 0.79
7 A' 1274 1274 55.04 5.29 0.52 0.69
8 A' 1076 1076 0.05 3.42 0.28 0.44
9 A' 972 972 17.59 3.92 0.73 0.85
10 A' 552 552 16.69 19.49 0.23 0.37
11 A' 282 282 2.17 3.05 0.37 0.54
12 A" 3156 3156 8.88 32.63 0.75 0.86
13 A" 3112 3112 8.75 76.58 0.75 0.86
14 A" 1485 1485 9.33 8.27 0.75 0.86
15 A" 1266 1266 0.32 1.52 0.75 0.86
16 A" 1029 1029 0.11 3.35 0.75 0.86
17 A" 776 776 3.90 0.11 0.75 0.86
18 A" 254 254 0.01 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14426.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14426.0 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-pVTZ-PP
ABC
1.01220 0.12386 0.11511

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.045 0.000
C2 0.598 -1.088 0.000
Br3 0.000 0.802 0.000
H4 1.216 -1.182 0.886
H5 1.216 -1.182 -0.886
H6 -0.196 -3.072 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
C11.51152.90382.17462.17461.09351.08901.0890
C21.51151.98171.08511.08512.13732.16132.1613
Br32.90381.98172.49032.49033.87883.09333.0933
H42.17461.08512.49031.77282.52042.51903.0785
H52.17461.08512.49031.77282.52043.07852.5190
H61.09352.13733.87882.52042.52041.76771.7677
H71.08902.16133.09332.51903.07851.76771.7665
H81.08902.16133.09333.07852.51901.76771.7665

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 111.754 C1 C2 H4 112.709
C1 C2 H5 112.709 C2 C1 H6 109.204
C2 C1 H7 111.388 C2 C1 H8 111.388
Br3 C2 H4 104.774 Br3 C2 H5 104.774
H4 C2 H5 109.542 H6 C1 H7 108.178
H6 C1 H8 108.178 H7 C1 H8 108.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.276      
2 C -0.179      
3 Br -0.127      
4 H 0.129      
5 H 0.129      
6 H 0.101      
7 H 0.111      
8 H 0.111      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.449 -2.075 0.000 2.123
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.792 -0.975 0.000
y -0.975 -29.866 0.000
z 0.000 0.000 -32.049
Traceless
 xyz
x -0.834 -0.975 0.000
y -0.975 2.054 0.000
z 0.000 0.000 -1.220
Polar
3z2-r2-2.440
x2-y2-1.925
xy-0.975
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.794 -0.139 0.000
y -0.139 8.616 0.000
z 0.000 0.000 5.374


<r2> (average value of r2) Å2
<r2> 100.407
(<r2>)1/2 10.020