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

using model chemistry: HSEh1PBE/aug-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 HSEh1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-2652.952087
Energy at 298.15K 
HF Energy-2652.952087
Nuclear repulsion energy163.812199
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/aug-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' 3138 3019 18.15 74.50 0.64 0.78
2 A' 3115 2997 6.76 128.20 0.09 0.17
3 A' 3052 2937 17.53 213.95 0.05 0.10
4 A' 1468 1412 2.18 3.71 0.75 0.86
5 A' 1456 1401 1.28 4.23 0.72 0.84
6 A' 1385 1333 7.34 2.15 0.58 0.74
7 A' 1261 1213 48.13 5.72 0.33 0.49
8 A' 1092 1051 0.28 3.91 0.17 0.28
9 A' 978 941 16.92 3.45 0.56 0.72
10 A' 578 556 15.73 19.67 0.18 0.31
11 A' 290 279 2.12 2.57 0.29 0.45
12 A" 3190 3070 7.25 27.48 0.75 0.86
13 A" 3156 3037 6.21 74.70 0.75 0.86
14 A" 1452 1397 10.41 5.45 0.75 0.86
15 A" 1252 1204 0.35 0.78 0.75 0.86
16 A" 1027 988 0.03 1.22 0.75 0.86
17 A" 766 737 3.83 0.01 0.75 0.86
18 A" 260 250 0.01 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14456.9 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 13910.4 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/aug-cc-pVDZ
ABC
1.00745 0.12596 0.11694

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.028 0.000
C2 0.597 -1.074 0.000
Br3 0.000 0.794 0.000
H4 1.221 -1.177 0.893
H5 1.221 -1.177 -0.893
H6 -0.194 -3.062 0.000
H7 -1.198 -1.890 0.890
H8 -1.198 -1.890 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50952.88012.17702.17701.10061.09681.0968
C21.50951.96121.09461.09462.13962.16372.1637
Br32.88011.96122.48482.48483.86103.07163.0716
H42.17701.09462.48481.78672.52062.52213.0890
H52.17701.09462.48481.78672.52063.08902.5221
H61.10062.13963.86102.52062.52061.78141.7814
H71.09682.16373.07162.52213.08901.78141.7804
H81.09682.16373.07163.08902.52211.78141.7804

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 111.500 C1 C2 H4 112.466
C1 C2 H5 112.466 C2 C1 H6 109.112
C2 C1 H7 111.242 C2 C1 H8 111.242
Br3 C2 H4 105.259 Br3 C2 H5 105.259
H4 C2 H5 109.408 H6 C1 H7 108.321
H6 C1 H8 108.321 H7 C1 H8 108.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.515      
2 C -0.106      
3 Br 0.168      
4 H -0.119      
5 H -0.119      
6 H -0.117      
7 H -0.111      
8 H -0.111      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.471 -2.182 0.000 2.232
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.069 -0.995 0.000
y -0.995 -30.159 0.000
z 0.000 0.000 -32.363
Traceless
 xyz
x -0.808 -0.995 0.000
y -0.995 2.057 0.000
z 0.000 0.000 -1.249
Polar
3z2-r2-2.498
x2-y2-1.910
xy-0.995
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.572 -0.062 0.000
y -0.062 9.078 0.000
z 0.000 0.000 6.167


<r2> (average value of r2) Å2
<r2> 105.847
(<r2>)1/2 10.288