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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-2652.849703
Energy at 298.15K 
HF Energy-2652.849703
Nuclear repulsion energy162.301976
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 PBEPBE/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' 3053 3035 14.90      
2 A' 3023 3005 9.09      
3 A' 2970 2952 17.02      
4 A' 1422 1413 1.94      
5 A' 1409 1401 0.88      
6 A' 1336 1329 3.62      
7 A' 1208 1201 54.28      
8 A' 1056 1050 0.84      
9 A' 946 941 18.12      
10 A' 546 542 15.05      
11 A' 276 274 2.60      
12 A" 3096 3079 11.33      
13 A" 3069 3052 2.61      
14 A" 1401 1393 8.83      
15 A" 1206 1199 0.64      
16 A" 982 976 0.01      
17 A" 745 741 5.22      
18 A" 253 252 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13999.0 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 13917.8 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 PBEPBE/cc-pVDZ
ABC
0.99663 0.12342 0.11469

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/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 -1.208 -1.914 0.898
H8 -1.208 -1.914 -0.898

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51662.90832.19532.19531.11151.10751.1075
C21.51661.98061.10591.10592.15542.18072.1807
Br32.90831.98062.50482.50483.89903.10633.1063
H42.19531.10592.50481.80172.54442.54713.1182
H52.19531.10592.50481.80172.54443.11822.5471
H61.11152.15543.89902.54442.54441.79691.7969
H71.10752.18073.10632.54713.11821.79691.7956
H81.10752.18073.10633.11822.54711.79691.7956

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 111.848 C1 C2 H4 112.736
C1 C2 H5 112.736 C2 C1 H6 109.224
C2 C1 H7 111.454 C2 C1 H8 111.454
Br3 C2 H4 104.925 Br3 C2 H5 104.925
H4 C2 H5 109.100 H6 C1 H7 108.142
H6 C1 H8 108.142 H7 C1 H8 108.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.047      
2 C -0.154      
3 Br -0.120      
4 H 0.083      
5 H 0.083      
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 -1.974 0.000 2.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.656 -0.921 0.000
y -0.921 -29.633 0.000
z 0.000 0.000 -31.963
Traceless
 xyz
x -0.857 -0.921 0.000
y -0.921 2.176 0.000
z 0.000 0.000 -1.319
Polar
3z2-r2-2.637
x2-y2-2.022
xy-0.921
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.943 -0.202 0.000
y -0.202 7.836 0.000
z 0.000 0.000 4.507


<r2> (average value of r2) Å2
<r2> 107.249
(<r2>)1/2 10.356