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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-2651.098237
Energy at 298.15K 
HF Energy-2651.098237
Nuclear repulsion energy164.207128
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/Def2TZVPP
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' 3252 2947 33.20 94.50 0.05 0.09
2 A' 3226 2924 9.09 98.00 0.51 0.68
3 A' 3164 2868 28.27 171.26 0.07 0.13
4 A' 1615 1464 1.86 2.52 0.75 0.86
5 A' 1611 1460 1.48 9.42 0.71 0.83
6 A' 1539 1395 2.67 1.16 0.75 0.86
7 A' 1398 1267 72.06 5.68 0.48 0.65
8 A' 1158 1049 0.60 4.88 0.15 0.26
9 A' 1038 941 13.76 4.58 0.71 0.83
10 A' 603 546 28.29 26.07 0.27 0.42
11 A' 307 278 2.33 2.83 0.34 0.51
12 A" 3312 3002 10.95 40.01 0.75 0.86
13 A" 3250 2946 15.57 66.95 0.75 0.86
14 A" 1602 1452 8.32 7.67 0.75 0.86
15 A" 1371 1243 0.19 1.95 0.75 0.86
16 A" 1128 1022 0.24 1.98 0.75 0.86
17 A" 831 753 2.81 0.02 0.75 0.86
18 A" 275 250 0.04 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15339.0 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 13903.2 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 HF/Def2TZVPP
ABC
1.02132 0.12595 0.11696

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.032 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 -3.049 0.000
H7 -1.189 -1.898 0.878
H8 -1.189 -1.898 -0.878

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51282.88402.16422.16421.08541.08131.0813
C21.51281.95821.07631.07632.13022.15422.1542
Br32.88401.95822.47052.47053.84883.07113.0711
H42.16421.07632.47051.75742.50232.50553.0598
H52.16421.07632.47051.75742.50233.05982.5055
H61.08542.13023.84882.50232.50231.75751.7575
H71.08132.15423.07112.50553.05981.75751.7553
H81.08132.15423.07113.05982.50551.75751.7553

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 111.739 C1 C2 H4 112.321
C1 C2 H5 112.321 C2 C1 H6 109.037
C2 C1 H7 111.194 C2 C1 H8 111.194
Br3 C2 H4 105.274 Br3 C2 H5 105.274
H4 C2 H5 109.451 H6 C1 H7 108.411
H6 C1 H8 108.411 H7 C1 H8 108.513
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.158      
2 C -0.026      
3 Br -0.191      
4 H 0.092      
5 H 0.092      
6 H 0.057      
7 H 0.067      
8 H 0.067      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.548 -2.382 0.000 2.444
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.057 -1.053 0.000
y -1.053 -30.386 0.000
z 0.000 0.000 -32.363
Traceless
 xyz
x -0.682 -1.053 0.000
y -1.053 1.824 0.000
z 0.000 0.000 -1.142
Polar
3z2-r2-2.284
x2-y2-1.670
xy-1.053
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.650 -0.239 0.000
y -0.239 8.280 0.000
z 0.000 0.000 5.304


<r2> (average value of r2) Å2
<r2> 105.711
(<r2>)1/2 10.282