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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-2652.849750
Energy at 298.15K 
HF Energy-2652.849750
Nuclear repulsion energy162.299583
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3054 3036 14.89 89.46 0.70 0.83
2 A' 3024 3007 9.09 135.28 0.11 0.20
3 A' 2971 2954 17.03 186.88 0.06 0.12
4 A' 1423 1414 1.89 12.75 0.75 0.86
5 A' 1411 1403 0.96 8.49 0.74 0.85
6 A' 1339 1331 3.64 6.76 0.68 0.81
7 A' 1211 1204 54.25 4.51 0.69 0.82
8 A' 1057 1051 0.77 3.94 0.51 0.67
9 A' 947 942 18.29 3.79 0.66 0.79
10 A' 551 548 14.92 15.45 0.25 0.40
11 A' 277 276 2.61 3.00 0.49 0.66
12 A" 3098 3080 11.32 15.25 0.75 0.86
13 A" 3071 3053 2.65 116.05 0.75 0.86
14 A" 1403 1395 8.79 14.68 0.75 0.86
15 A" 1208 1201 0.66 3.04 0.75 0.86
16 A" 984 978 0.01 6.69 0.75 0.86
17 A" 747 743 5.26 0.31 0.75 0.86
18 A" 258 256 0.00 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14015.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 13934.6 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/cc-pVDZ
ABC
0.99665 0.12342 0.11469

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.049 0.000
C2 0.598 -1.086 0.000
Br3 0.000 0.803 0.000
H4 1.232 -1.184 0.901
H5 1.232 -1.184 -0.901
H6 -0.190 -3.092 0.000
H7 -1.209 -1.915 0.898
H8 -1.209 -1.915 -0.898

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51662.90842.19532.19531.11151.10751.1075
C21.51661.98061.10581.10582.15542.18092.1809
Br32.90841.98062.50472.50473.89913.10653.1065
H42.19531.10582.50471.80172.54452.54743.1183
H52.19531.10582.50471.80172.54453.11832.5474
H61.11152.15543.89912.54452.54451.79671.7967
H71.10752.18093.10652.54743.11831.79671.7954
H81.10752.18093.10653.11832.54741.79671.7954

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 111.849 C1 C2 H4 112.741
C1 C2 H5 112.741 C2 C1 H6 109.229
C2 C1 H7 111.469 C2 C1 H8 111.469
Br3 C2 H4 104.918 Br3 C2 H5 104.918
H4 C2 H5 109.103 H6 C1 H7 108.131
H6 C1 H8 108.131 H7 C1 H8 108.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.047      
2 C -0.154      
3 Br -0.120      
4 H 0.084      
5 H 0.084      
6 H 0.045      
7 H 0.054      
8 H 0.054      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.421 -1.975 0.000 2.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.654 -0.919 0.000
y -0.919 -29.633 0.000
z 0.000 0.000 -31.963
Traceless
 xyz
x -0.856 -0.919 0.000
y -0.919 2.176 0.000
z 0.000 0.000 -1.320
Polar
3z2-r2-2.640
x2-y2-2.022
xy-0.919
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.943 -0.201 0.000
y -0.201 7.835 0.000
z 0.000 0.000 4.506


<r2> (average value of r2) Å2
<r2> 107.253
(<r2>)1/2 10.356