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

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ-PP
 hartrees
Energy at 0K-496.211317
Energy at 298.15K 
HF Energy-496.211317
Nuclear repulsion energy127.640614
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 B3PW91/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' 3111 3111 23.10 64.75 0.42 0.59
2 A' 3095 3095 1.83 131.34 0.20 0.33
3 A' 3035 3035 17.91 193.14 0.06 0.12
4 A' 1492 1492 2.55 5.65 0.75 0.86
5 A' 1481 1481 1.45 7.09 0.75 0.85
6 A' 1405 1405 5.66 2.55 0.66 0.80
7 A' 1271 1271 50.37 4.65 0.54 0.70
8 A' 1082 1082 0.08 3.34 0.28 0.43
9 A' 977 977 17.51 3.67 0.70 0.83
10 A' 574 574 14.45 18.00 0.22 0.35
11 A' 282 282 1.94 2.59 0.38 0.55
12 A" 3163 3163 8.43 26.22 0.75 0.86
13 A" 3126 3126 6.50 80.78 0.75 0.86
14 A" 1476 1476 9.94 8.03 0.75 0.86
15 A" 1261 1261 0.42 1.54 0.75 0.86
16 A" 1029 1029 0.08 3.14 0.75 0.86
17 A" 771 771 4.46 0.08 0.75 0.86
18 A" 255 255 0.01 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14443.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14443.6 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 B3PW91/cc-pVTZ-PP
ABC
1.01632 0.12576 0.11681

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.031 0.000
C2 0.595 -1.074 0.000
Br3 0.000 0.795 0.000
H4 1.216 -1.173 0.886
H5 1.216 -1.173 -0.886
H6 -0.194 -3.059 0.000
H7 -1.194 -1.897 0.884
H8 -1.194 -1.897 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50782.88322.17112.17111.09411.08991.0899
C21.50781.96201.08691.08692.13562.15832.1583
Br32.88321.96202.47782.47783.85873.07463.0746
H42.17111.08692.47781.77292.51622.51653.0768
H52.17111.08692.47781.77292.51623.07682.5165
H61.09412.13563.85872.51622.51621.76911.7691
H71.08992.15833.07462.51653.07681.76911.7675
H81.08992.15833.07463.07682.51651.76911.7675

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 111.725 C1 C2 H4 112.585
C1 C2 H5 112.585 C2 C1 H6 109.293
C2 C1 H7 111.348 C2 C1 H8 111.348
Br3 C2 H4 105.066 Br3 C2 H5 105.066
H4 C2 H5 109.287 H6 C1 H7 108.196
H6 C1 H8 108.196 H7 C1 H8 108.355
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.264      
2 C -0.170      
3 Br -0.125      
4 H 0.122      
5 H 0.122      
6 H 0.096      
7 H 0.109      
8 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.443 -2.064 0.000 2.111
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.492 -0.969 0.000
y -0.969 -29.596 0.000
z 0.000 0.000 -31.759
Traceless
 xyz
x -0.815 -0.969 0.000
y -0.969 2.030 0.000
z 0.000 0.000 -1.215
Polar
3z2-r2-2.429
x2-y2-1.896
xy-0.969
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.781 -0.124 0.000
y -0.124 8.489 0.000
z 0.000 0.000 5.361


<r2> (average value of r2) Å2
<r2> 99.175
(<r2>)1/2 9.959