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

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-2653.432585
Energy at 298.15K 
HF Energy-2653.432585
Nuclear repulsion energy161.107921
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 BLYP/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' 3026 3017 26.23      
2 A' 3009 3000 1.82      
3 A' 2951 2942 20.70      
4 A' 1466 1462 2.11      
5 A' 1451 1446 0.84      
6 A' 1377 1373 3.50      
7 A' 1232 1228 54.62      
8 A' 1040 1037 0.09      
9 A' 938 935 19.72      
10 A' 514 512 17.26      
11 A' 270 270 2.67      
12 A" 3079 3070 10.91      
13 A" 3036 3027 9.01      
14 A" 1448 1443 8.50      
15 A" 1230 1227 0.33      
16 A" 996 994 0.10      
17 A" 756 754 3.84      
18 A" 245 245 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14032.3 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 13990.2 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 BLYP/cc-pVTZ
ABC
0.99901 0.12088 0.11244

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.069 0.000
C2 0.601 -1.106 0.000
Br3 0.000 0.812 0.000
H4 1.223 -1.195 0.893
H5 1.223 -1.195 -0.893
H6 -0.194 -3.101 0.000
H7 -1.202 -1.936 0.889
H8 -1.202 -1.936 -0.889

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52102.93762.19002.19001.10041.09531.0953
C21.52102.00991.09151.09152.14762.17552.1755
Br32.93762.00992.51432.51433.91743.12863.1286
H42.19001.09152.51431.78552.53682.53593.0991
H52.19001.09152.51431.78552.53683.09912.5359
H61.10042.14763.91742.53682.53681.77821.7782
H71.09532.17553.12862.53593.09911.77821.7776
H81.09532.17553.12863.09912.53591.77821.7776

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 111.859 C1 C2 H4 112.887
C1 C2 H5 112.887 C2 C1 H6 108.968
C2 C1 H7 111.478 C2 C1 H8 111.478
Br3 C2 H4 104.396 Br3 C2 H5 104.396
H4 C2 H5 109.761 H6 C1 H7 108.164
H6 C1 H8 108.164 H7 C1 H8 108.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.256      
2 C -0.145      
3 Br -0.145      
4 H 0.119      
5 H 0.119      
6 H 0.095      
7 H 0.106      
8 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.448 -2.159 0.000 2.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.349 -0.946 0.000
y -0.946 -30.365 0.000
z 0.000 0.000 -32.627
Traceless
 xyz
x -0.852 -0.946 0.000
y -0.946 2.123 0.000
z 0.000 0.000 -1.270
Polar
3z2-r2-2.541
x2-y2-1.983
xy-0.946
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.861 -0.138 0.000
y -0.138 9.008 0.000
z 0.000 0.000 5.387


<r2> (average value of r2) Å2
<r2> 109.161
(<r2>)1/2 10.448