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

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-2647.715154
Energy at 298.15K 
HF Energy-2647.715154
Nuclear repulsion energy164.889849
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 LSDA/6-31+G**
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' 3066 3020 9.30      
2 A' 3031 2986 6.81      
3 A' 2980 2936 12.89      
4 A' 1432 1410 6.20      
5 A' 1423 1401 2.00      
6 A' 1350 1330 18.70      
7 A' 1232 1214 48.32      
8 A' 1083 1067 0.24      
9 A' 959 944 20.01      
10 A' 576 567 12.40      
11 A' 285 280 2.34      
12 A" 3103 3057 4.12      
13 A" 3078 3031 2.36      
14 A" 1416 1394 16.77      
15 A" 1218 1200 0.88      
16 A" 1005 990 0.06      
17 A" 754 742 6.32      
18 A" 263 259 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14125.9 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 13914.0 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 LSDA/6-31+G**
ABC
1.01329 0.12805 0.11884

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.567 -2.010 0.000
C2 0.592 -1.062 0.000
Br3 0.000 0.788 0.000
H4 1.223 -1.169 0.895
H5 1.223 -1.169 -0.895
H6 -0.197 -3.052 0.000
H7 -1.200 -1.872 0.892
H8 -1.200 -1.872 -0.892

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.49782.85502.17152.17151.10531.10221.1022
C21.49781.94251.10051.10052.14002.15932.1593
Br32.85501.94252.47562.47563.84443.05103.0510
H42.17151.10052.47561.79042.52202.52303.0918
H52.17151.10052.47561.79042.52203.09182.5230
H61.10532.14003.84442.52202.52201.78721.7872
H71.10222.15933.05102.52303.09181.78721.7838
H81.10222.15933.05103.09182.52301.78721.7838

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 111.517 C1 C2 H4 112.482
C1 C2 H5 112.482 C2 C1 H6 109.673
C2 C1 H7 111.392 C2 C1 H8 111.392
Br3 C2 H4 105.519 Br3 C2 H5 105.519
H4 C2 H5 108.859 H6 C1 H7 108.114
H6 C1 H8 108.114 H7 C1 H8 108.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.555      
2 C -0.350      
3 Br -0.138      
4 H 0.217      
5 H 0.217      
6 H 0.192      
7 H 0.208      
8 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.473 -2.146 0.000 2.197
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.235 -1.034 0.000
y -1.034 -30.214 0.000
z 0.000 0.000 -32.569
Traceless
 xyz
x -0.844 -1.034 0.000
y -1.034 2.188 0.000
z 0.000 0.000 -1.345
Polar
3z2-r2-2.689
x2-y2-2.021
xy-1.034
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.983 -0.118 0.000
y -0.118 8.396 0.000
z 0.000 0.000 5.663


<r2> (average value of r2) Å2
<r2> 104.717
(<r2>)1/2 10.233