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

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.053280
Energy at 298.15K 
HF Energy-2651.053280
Nuclear repulsion energy164.160300
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 HF/6-311+G(3df,2p)
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' 3248 2951 31.08 90.87 0.05 0.10
2 A' 3223 2928 8.83 88.48 0.51 0.67
3 A' 3161 2872 26.92 169.14 0.07 0.13
4 A' 1615 1468 1.83 2.24 0.75 0.86
5 A' 1611 1464 1.79 6.59 0.63 0.78
6 A' 1538 1398 3.06 0.74 0.69 0.82
7 A' 1396 1269 70.98 7.54 0.31 0.47
8 A' 1157 1051 0.64 5.06 0.10 0.19
9 A' 1038 943 14.36 3.89 0.73 0.85
10 A' 602 547 28.74 27.89 0.21 0.35
11 A' 307 279 2.39 3.16 0.26 0.42
12 A" 3308 3006 9.15 37.79 0.75 0.86
13 A" 3247 2950 15.15 59.76 0.75 0.86
14 A" 1603 1456 8.88 5.46 0.75 0.86
15 A" 1370 1245 0.12 1.06 0.75 0.86
16 A" 1127 1024 0.11 1.04 0.75 0.86
17 A" 829 753 2.73 0.00 0.75 0.86
18 A" 273 248 0.04 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15325.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 13925.1 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 HF/6-311+G(3df,2p)
ABC
1.02128 0.12585 0.11688

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.033 0.000
C2 0.596 -1.071 0.000
Br3 0.000 0.795 0.000
H4 1.210 -1.172 0.879
H5 1.210 -1.172 -0.879
H6 -0.192 -3.050 0.000
H7 -1.189 -1.899 0.878
H8 -1.189 -1.899 -0.878

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51332.88532.16482.16481.08551.08141.0814
C21.51331.95881.07641.07642.13042.15472.1547
Br32.88531.95882.47052.47053.84983.07283.0728
H42.16481.07642.47051.75792.50282.50603.0604
H52.16481.07642.47051.75792.50283.06042.5060
H61.08552.13043.84982.50282.50281.75741.7574
H71.08142.15473.07282.50603.06041.75741.7556
H81.08142.15473.07283.06042.50601.75741.7556

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 111.763 C1 C2 H4 112.332
C1 C2 H5 112.332 C2 C1 H6 109.013
C2 C1 H7 111.201 C2 C1 H8 111.201
Br3 C2 H4 105.230 Br3 C2 H5 105.230
H4 C2 H5 109.487 H6 C1 H7 108.402
H6 C1 H8 108.402 H7 C1 H8 108.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 C -0.301      
3 Br -0.176      
4 H 0.148      
5 H 0.148      
6 H 0.130      
7 H 0.142      
8 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.542 -2.404 0.000 2.464
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.108 -1.025 0.000
y -1.025 -30.377 0.000
z 0.000 0.000 -32.478
Traceless
 xyz
x -0.680 -1.025 0.000
y -1.025 1.916 0.000
z 0.000 0.000 -1.235
Polar
3z2-r2-2.470
x2-y2-1.731
xy-1.025
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.136 -0.165 0.000
y -0.165 8.562 0.000
z 0.000 0.000 5.827


<r2> (average value of r2) Å2
<r2> 105.802
(<r2>)1/2 10.286