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

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-2653.492031
Energy at 298.15K 
HF Energy-2653.492031
Nuclear repulsion energy162.947928
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 B3LYP/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' 3099 2995 26.92      
2 A' 3084 2981 0.30      
3 A' 3025 2924 19.35      
4 A' 1501 1451 2.35      
5 A' 1488 1439 1.30      
6 A' 1415 1367 4.24      
7 A' 1276 1233 54.04      
8 A' 1075 1039 0.11      
9 A' 971 939 17.49      
10 A' 550 531 17.12      
11 A' 283 273 2.24      
12 A" 3153 3048 9.14      
13 A" 3110 3006 8.43      
14 A" 1484 1435 9.12      
15 A" 1266 1224 0.35      
16 A" 1033 998 0.11      
17 A" 776 750 3.96      
18 A" 255 246 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14421.8 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 13940.1 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 B3LYP/cc-pVTZ
ABC
1.01212 0.12396 0.11520

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.045 0.000
C2 0.597 -1.086 0.000
Br3 0.000 0.801 0.000
H4 1.216 -1.182 0.887
H5 1.216 -1.182 -0.887
H6 -0.194 -3.071 0.000
H7 -1.195 -1.911 0.884
H8 -1.195 -1.911 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51302.90342.17502.17501.09341.08921.0892
C21.51301.97931.08551.08552.13752.16222.1622
Br32.90341.97932.48982.48983.87733.09303.0930
H42.17501.08552.48981.77302.51882.51933.0790
H52.17501.08552.48981.77302.51883.07902.5193
H61.09342.13753.87732.51882.51881.76861.7686
H71.08922.16223.09302.51933.07901.76861.7671
H81.08922.16223.09303.07902.51931.76861.7671

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 111.791 C1 C2 H4 112.617
C1 C2 H5 112.617 C2 C1 H6 109.126
C2 C1 H7 111.346 C2 C1 H8 111.346
Br3 C2 H4 104.879 Br3 C2 H5 104.879
H4 C2 H5 109.505 H6 C1 H7 108.248
H6 C1 H8 108.248 H7 C1 H8 108.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.276      
2 C -0.155      
3 Br -0.147      
4 H 0.126      
5 H 0.126      
6 H 0.102      
7 H 0.112      
8 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 -2.159 0.000 2.209
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.126 -0.968 0.000
y -0.968 -30.263 0.000
z 0.000 0.000 -32.398
Traceless
 xyz
x -0.795 -0.968 0.000
y -0.968 1.998 0.000
z 0.000 0.000 -1.203
Polar
3z2-r2-2.406
x2-y2-1.863
xy-0.968
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.695 -0.168 0.000
y -0.168 8.624 0.000
z 0.000 0.000 5.247


<r2> (average value of r2) Å2
<r2> 107.000
(<r2>)1/2 10.344