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

using model chemistry: PBEPBEultrafine/daug-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/daug-cc-pVTZ
 hartrees
Energy at 0K-2652.954655
Energy at 298.15K 
HF Energy-2652.954655
Nuclear repulsion energy162.868351
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/daug-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' 3036 3036 19.98 72.45 0.46 0.63
2 A' 3021 3021 2.21 142.29 0.14 0.25
3 A' 2964 2964 17.35 244.45 0.07 0.13
4 A' 1445 1445 2.70 3.35 0.75 0.86
5 A' 1432 1432 1.16 5.30 0.73 0.85
6 A' 1356 1356 5.90 2.46 0.50 0.66
7 A' 1223 1223 45.83 7.77 0.25 0.39
8 A' 1051 1051 0.36 3.08 0.14 0.25
9 A' 946 946 18.81 3.96 0.52 0.69
10 A' 550 550 14.19 19.06 0.16 0.28
11 A' 275 275 2.24 2.96 0.26 0.41
12 A" 3086 3086 7.18 26.01 0.75 0.86
13 A" 3052 3052 5.45 80.04 0.75 0.86
14 A" 1428 1428 10.46 5.48 0.75 0.86
15 A" 1221 1221 0.26 0.63 0.75 0.86
16 A" 994 994 0.02 1.29 0.75 0.86
17 A" 748 748 4.00 0.02 0.75 0.86
18 A" 247 247 0.00 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14037.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14037.1 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/daug-cc-pVTZ
ABC
1.00525 0.12415 0.11535

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.043 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
C11.51282.90022.18322.18321.10161.09731.0973
C21.51281.97731.09451.09452.14422.16922.1692
Br32.90021.97732.49322.49323.88233.09373.0937
H42.18321.09452.49321.78652.53052.53073.0957
H52.18321.09452.49321.78652.53053.09572.5307
H61.10162.14423.88232.53052.53051.78081.7808
H71.09732.16923.09372.53073.09571.78081.7796
H81.09732.16923.09373.09572.53071.78081.7796

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 111.711 C1 C2 H4 112.739
C1 C2 H5 112.739 C2 C1 H6 109.185
C2 C1 H7 111.422 C2 C1 H8 111.422
Br3 C2 H4 104.839 Br3 C2 H5 104.839
H4 C2 H5 109.399 H6 C1 H7 108.166
H6 C1 H8 108.166 H7 C1 H8 108.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.575      
2 C 0.146      
3 Br -0.626      
4 H 0.157      
5 H 0.157      
6 H 0.138      
7 H 0.301      
8 H 0.301      


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 -32.254 -0.934 0.000
y -0.934 -30.316 0.000
z 0.000 0.000 -32.514
Traceless
 xyz
x -0.839 -0.934 0.000
y -0.934 2.068 0.000
z 0.000 0.000 -1.229
Polar
3z2-r2-2.458
x2-y2-1.938
xy-0.934
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.074 0.016 0.000
y 0.016 9.598 0.000
z 0.000 0.000 6.637


<r2> (average value of r2) Å2
<r2> 107.050
(<r2>)1/2 10.346