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

using model chemistry: HSEh1PBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-2652.960336
Energy at 298.15K 
HF Energy-2652.960336
Nuclear repulsion energy164.406779
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 HSEh1PBE/6-311+G(3df,2p)
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' 3120 3120 19.61 69.72 0.51 0.67
2 A' 3103 3103 3.04 119.87 0.14 0.25
3 A' 3044 3044 16.60 194.88 0.06 0.11
4 A' 1494 1494 2.97 3.25 0.75 0.86
5 A' 1482 1482 1.91 5.39 0.69 0.82
6 A' 1406 1406 6.70 1.42 0.59 0.74
7 A' 1276 1276 45.72 6.24 0.28 0.44
8 A' 1088 1088 0.12 3.70 0.14 0.24
9 A' 981 981 17.23 3.29 0.59 0.74
10 A' 585 585 14.31 19.05 0.18 0.31
11 A' 288 288 1.95 2.59 0.28 0.43
12 A" 3171 3171 6.36 25.61 0.75 0.86
13 A" 3135 3135 5.98 73.35 0.75 0.86
14 A" 1478 1478 11.27 5.32 0.75 0.86
15 A" 1264 1264 0.26 0.86 0.75 0.86
16 A" 1035 1035 0.03 1.26 0.75 0.86
17 A" 771 771 4.00 0.01 0.75 0.86
18 A" 258 258 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14488.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14488.9 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 HSEh1PBE/6-311+G(3df,2p)
ABC
1.01673 0.12670 0.11763

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.024 0.000
C2 0.595 -1.068 0.000
Br3 0.000 0.792 0.000
H4 1.216 -1.170 0.886
H5 1.216 -1.170 -0.886
H6 -0.195 -3.051 0.000
H7 -1.193 -1.888 0.884
H8 -1.193 -1.888 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50702.87322.16942.16941.09341.08981.0898
C21.50701.95341.08691.08692.13452.15652.1565
Br32.87321.95342.47282.47283.84823.06353.0635
H42.16941.08692.47281.77222.51342.51433.0747
H52.16941.08692.47281.77222.51343.07472.5143
H61.09342.13453.84822.51342.51341.76931.7693
H71.08982.15653.06352.51433.07471.76931.7671
H81.08982.15653.06353.07472.51431.76931.7671

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 111.612 C1 C2 H4 112.503
C1 C2 H5 112.503 C2 C1 H6 109.301
C2 C1 H7 111.272 C2 C1 H8 111.272
Br3 C2 H4 105.255 Br3 C2 H5 105.255
H4 C2 H5 109.220 H6 C1 H7 108.279
H6 C1 H8 108.279 H7 C1 H8 108.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.279      
2 C -0.333      
3 Br -0.135      
4 H 0.159      
5 H 0.159      
6 H 0.132      
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
  0.461 -2.141 0.000 2.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.972 -0.955 0.000
y -0.955 -30.125 0.000
z 0.000 0.000 -32.295
Traceless
 xyz
x -0.761 -0.955 0.000
y -0.955 2.008 0.000
z 0.000 0.000 -1.246
Polar
3z2-r2-2.492
x2-y2-1.846
xy-0.955
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.497 -0.054 0.000
y -0.054 8.924 0.000
z 0.000 0.000 6.135


<r2> (average value of r2) Å2
<r2> 105.265
(<r2>)1/2 10.260