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

using model chemistry: B2PLYP=FULLultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-2653.003142
Energy at 298.15K 
HF Energy-2652.790234
Nuclear repulsion energy164.020291
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 B2PLYP=FULLultrafine/cc-pVTZ
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' 3131 2991 26.25 62.42 0.27 0.43
2 A' 3117 2978 0.49 129.14 0.26 0.42
3 A' 3058 2922 18.46 181.49 0.06 0.11
4 A' 1516 1449 2.19 5.08 0.75 0.86
5 A' 1503 1436 1.33 8.41 0.74 0.85
6 A' 1427 1363 4.34 1.60 0.71 0.83
7 A' 1292 1234 51.81 4.16 0.54 0.70
8 A' 1090 1042 0.06 3.63 0.23 0.38
9 A' 986 942 14.83 3.98 0.75 0.85
10 A' 577 551 14.79 18.43 0.22 0.37
11 A' 288 275 1.79 2.45 0.40 0.57
12 A" 3181 3039 8.93 27.38 0.75 0.86
13 A" 3144 3003 7.04 77.95 0.75 0.86
14 A" 1503 1436 9.04 7.72 0.75 0.86
15 A" 1280 1223 0.35 1.65 0.75 0.86
16 A" 1046 999 0.14 3.06 0.75 0.86
17 A" 781 746 3.66 0.08 0.75 0.86
18 A" 266 254 0.01 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14592.4 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 13941.6 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 B2PLYP=FULLultrafine/cc-pVTZ
ABC
1.01440 0.12599 0.11695

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.029 0.000
C2 0.598 -1.074 0.000
Br3 0.000 0.795 0.000
H4 1.215 -1.176 0.884
H5 1.215 -1.176 -0.884
H6 -0.200 -3.054 0.000
H7 -1.192 -1.889 0.881
H8 -1.192 -1.889 -0.881

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51012.88132.16862.16861.09031.08651.0865
C21.51011.96211.08301.08302.13482.15502.1550
Br32.88131.96212.47852.47853.85413.06623.0662
H42.16861.08302.47851.76792.51232.51053.0689
H52.16861.08302.47851.76792.51233.06892.5105
H61.09032.13483.85412.51232.51231.76551.7655
H71.08652.15503.06622.51053.06891.76551.7624
H81.08652.15503.06623.06892.51051.76551.7624

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 111.494 C1 C2 H4 112.453
C1 C2 H5 112.453 C2 C1 H6 109.298
C2 C1 H7 111.135 C2 C1 H8 111.135
Br3 C2 H4 105.278 Br3 C2 H5 105.278
H4 C2 H5 109.408 H6 C1 H7 108.396
H6 C1 H8 108.396 H7 C1 H8 108.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.309      
2 C -0.171      
3 Br -0.144      
4 H 0.135      
5 H 0.135      
6 H 0.112      
7 H 0.121      
8 H 0.121      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.466 -2.097 0.000 2.148
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.172 -0.997 0.001
y -0.997 -30.381 0.022
z 0.001 0.022 -32.418
Traceless
 xyz
x -0.773 -0.997 0.001
y -0.997 1.914 0.022
z 0.001 0.022 -1.142
Polar
3z2-r2-2.283
x2-y2-1.791
xy-0.997
xz0.001
yz0.022


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.611 -0.179 -0.000
y -0.179 8.397 -0.001
z -0.000 -0.001 5.170


<r2> (average value of r2) Å2
<r2> 105.799
(<r2>)1/2 10.286