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

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-2652.954428
Energy at 298.15K 
HF Energy-2652.954428
Nuclear repulsion energy162.878486
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 PBEPBEultrafine/aug-cc-pVTZ
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' 3037 3003 19.94 72.33 0.46 0.63
2 A' 3021 2987 2.23 140.61 0.15 0.26
3 A' 2963 2930 17.34 244.86 0.07 0.13
4 A' 1445 1429 2.69 3.38 0.75 0.86
5 A' 1432 1416 1.16 5.18 0.73 0.85
6 A' 1356 1341 5.94 2.43 0.50 0.67
7 A' 1223 1209 45.97 7.51 0.26 0.42
8 A' 1052 1040 0.37 3.04 0.15 0.25
9 A' 947 936 18.77 3.96 0.53 0.70
10 A' 550 544 14.15 18.96 0.16 0.28
11 A' 275 272 2.24 2.92 0.27 0.42
12 A" 3087 3052 7.08 26.08 0.75 0.86
13 A" 3052 3018 5.48 79.92 0.75 0.86
14 A" 1428 1412 10.50 5.43 0.75 0.86
15 A" 1221 1207 0.26 0.63 0.75 0.86
16 A" 994 983 0.02 1.32 0.75 0.86
17 A" 748 740 4.01 0.01 0.75 0.86
18 A" 246 244 0.00 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14037.2 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 13880.0 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
1.00528 0.12417 0.11537

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.042 0.000
C2 0.598 -1.084 0.000
Br3 0.000 0.800 0.000
H4 1.223 -1.180 0.893
H5 1.223 -1.180 -0.893
H6 -0.194 -3.077 0.000
H7 -1.201 -1.908 0.890
H8 -1.201 -1.908 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51272.89992.18322.18321.10171.09731.0973
C21.51271.97711.09451.09452.14432.16912.1691
Br32.89991.97712.49302.49303.88223.09343.0934
H42.18321.09452.49301.78652.53072.53073.0957
H52.18321.09452.49301.78652.53073.09572.5307
H61.10172.14433.88222.53072.53071.78091.7809
H71.09732.16913.09342.53073.09571.78091.7796
H81.09732.16913.09343.09572.53071.78091.7796

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 111.707 C1 C2 H4 112.744
C1 C2 H5 112.744 C2 C1 H6 109.202
C2 C1 H7 111.422 C2 C1 H8 111.422
Br3 C2 H4 104.836 Br3 C2 H5 104.836
H4 C2 H5 109.397 H6 C1 H7 108.162
H6 C1 H8 108.162 H7 C1 H8 108.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.580      
2 C -0.312      
3 Br -0.123      
4 H 0.181      
5 H 0.181      
6 H 0.189      
7 H 0.232      
8 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.439 -2.118 0.000 2.163
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.259 -0.939 0.000
y -0.939 -30.307 0.000
z 0.000 0.000 -32.523
Traceless
 xyz
x -0.844 -0.939 0.000
y -0.939 2.084 0.000
z 0.000 0.000 -1.241
Polar
3z2-r2-2.481
x2-y2-1.952
xy-0.939
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.027 0.015 0.000
y 0.015 9.577 0.000
z 0.000 0.000 6.587


<r2> (average value of r2) Å2
<r2> 107.038
(<r2>)1/2 10.346