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

using model chemistry: HF/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-2651.040934
Energy at 298.15K 
HF Energy-2651.040934
Nuclear repulsion energy163.591512
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/cc-pVDZ
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' 3270 2969 39.98 80.82 0.07 0.13
2 A' 3257 2957 1.97 134.40 0.46 0.63
3 A' 3182 2890 27.21 149.12 0.07 0.12
4 A' 1595 1449 1.26 12.58 0.74 0.85
5 A' 1592 1446 1.62 5.26 0.72 0.84
6 A' 1520 1380 2.18 2.72 0.75 0.86
7 A' 1383 1256 80.72 4.46 0.65 0.78
8 A' 1158 1051 0.25 5.24 0.27 0.42
9 A' 1041 946 14.93 5.23 0.71 0.83
10 A' 595 541 31.55 26.01 0.29 0.45
11 A' 307 279 2.70 3.37 0.44 0.61
12 A" 3338 3031 11.32 46.04 0.75 0.86
13 A" 3284 2981 13.36 86.69 0.75 0.86
14 A" 1582 1436 7.69 13.17 0.75 0.86
15 A" 1359 1234 0.45 3.31 0.75 0.86
16 A" 1116 1013 0.20 4.72 0.75 0.86
17 A" 827 751 3.44 0.23 0.75 0.86
18 A" 282 257 0.03 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15344.3 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 13932.6 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 HF/cc-pVDZ
ABC
1.01194 0.12519 0.11626

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.037 0.000
C2 0.597 -1.076 0.000
Br3 0.000 0.797 0.000
H4 1.217 -1.176 0.886
H5 1.217 -1.176 -0.886
H6 -0.191 -3.062 0.000
H7 -1.195 -1.901 0.885
H8 -1.195 -1.901 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51472.89142.17472.17471.09381.09001.0900
C21.51471.96561.08581.08582.13712.16222.1622
Br32.89141.96562.48182.48183.86373.08013.0801
H42.17471.08582.48181.77252.51452.51783.0783
H52.17471.08582.48181.77252.51453.07832.5178
H61.09382.13713.86372.51452.51451.77181.7718
H71.09002.16223.08012.51783.07831.77181.7698
H81.09002.16223.08013.07832.51781.77181.7698

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 111.703 C1 C2 H4 112.451
C1 C2 H5 112.451 C2 C1 H6 108.957
C2 C1 H7 111.176 C2 C1 H8 111.176
Br3 C2 H4 105.165 Br3 C2 H5 105.165
H4 C2 H5 109.413 H6 C1 H7 108.451
H6 C1 H8 108.451 H7 C1 H8 108.552
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.033      
2 C -0.124      
3 Br -0.167      
4 H 0.088      
5 H 0.088      
6 H 0.041      
7 H 0.053      
8 H 0.053      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.533 -2.334 0.000 2.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.916 -1.076 0.000
y -1.076 -30.140 0.000
z 0.000 0.000 -32.218
Traceless
 xyz
x -0.737 -1.076 0.000
y -1.076 1.927 0.000
z 0.000 0.000 -1.190
Polar
3z2-r2-2.380
x2-y2-1.776
xy-1.076
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.629 -0.370 0.000
y -0.370 7.435 0.000
z 0.000 0.000 4.252


<r2> (average value of r2) Å2
<r2> 106.165
(<r2>)1/2 10.304