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

using model chemistry: B2PLYP=FULLultrafine/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-2650.584787
Energy at 298.15K 
HF Energy-2650.395210
Nuclear repulsion energy165.218094
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/6-31G(2df,p)
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' 3153 3153 17.47 64.14 0.68 0.81
2 A' 3125 3125 7.50 94.85 0.13 0.24
3 A' 3073 3073 16.19 128.06 0.06 0.12
4 A' 1521 1521 1.58 7.81 0.74 0.85
5 A' 1506 1506 1.00 11.52 0.75 0.86
6 A' 1429 1429 3.18 3.72 0.68 0.81
7 A' 1297 1297 46.48 2.32 0.39 0.56
8 A' 1093 1093 0.16 3.95 0.28 0.43
9 A' 992 992 12.05 3.08 0.74 0.85
10 A' 600 600 12.17 16.19 0.21 0.35
11 A' 294 294 1.53 1.95 0.32 0.48
12 A" 3193 3193 10.92 14.10 0.75 0.86
13 A" 3167 3167 3.14 84.45 0.75 0.86
14 A" 1508 1508 7.33 14.94 0.75 0.86
15 A" 1284 1284 0.32 3.74 0.75 0.86
16 A" 1053 1053 0.05 3.45 0.75 0.86
17 A" 783 783 3.45 0.07 0.75 0.86
18 A" 267 267 0.03 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14667.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14667.8 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/6-31G(2df,p)
ABC
1.00762 0.12856 0.11909

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.012 0.000
C2 0.600 -1.053 0.000
Br3 0.000 0.786 0.000
H4 1.222 -1.171 0.884
H5 1.222 -1.171 -0.884
H6 -0.208 -3.042 0.000
H7 -1.196 -1.867 0.883
H8 -1.196 -1.867 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51582.85592.17162.17161.09341.09001.0900
C21.51581.93451.08761.08762.14632.16072.1607
Br32.85591.93452.47102.47103.83333.04103.0410
H42.17161.08762.47101.76862.51512.51643.0753
H52.17161.08762.47101.76862.51513.07532.5164
H61.09342.14633.83332.51512.51511.77141.7714
H71.09002.16073.04102.51643.07531.77141.7669
H81.09002.16073.04103.07532.51641.77141.7669

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 111.148 C1 C2 H4 111.999
C1 C2 H5 111.999 C2 C1 H6 109.632
C2 C1 H7 110.975 C2 C1 H8 110.975
Br3 C2 H4 106.291 Br3 C2 H5 106.291
H4 C2 H5 108.791 H6 C1 H7 108.450
H6 C1 H8 108.450 H7 C1 H8 108.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.381      
2 C -0.308      
3 Br -0.059      
4 H 0.161      
5 H 0.161      
6 H 0.131      
7 H 0.148      
8 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.445 -1.996 0.000 2.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.529 -0.974 0.001
y -0.974 -29.986 0.016
z 0.001 0.016 -31.819
Traceless
 xyz
x -0.627 -0.974 0.001
y -0.974 1.688 0.016
z 0.001 0.016 -1.062
Polar
3z2-r2-2.124
x2-y2-1.543
xy-0.974
xz0.001
yz0.016


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.508 -0.156 -0.000
y -0.156 7.757 0.000
z -0.000 0.000 5.227


<r2> (average value of r2) Å2
<r2> 104.107
(<r2>)1/2 10.203