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

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-2650.337962
Energy at 298.15K-2650.346213
HF Energy-2650.213787
Nuclear repulsion energy163.208036
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 B2PLYP/6-31G*
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' 3163 3002 24.12      
2 A' 3147 2987 3.97      
3 A' 3084 2927 17.75      
4 A' 1549 1470 2.27      
5 A' 1536 1458 0.91      
6 A' 1459 1384 4.05      
7 A' 1312 1246 63.21      
8 A' 1104 1048 0.20      
9 A' 997 946 13.25      
10 A' 570 541 16.68      
11 A' 292 277 2.34      
12 A" 3218 3055 10.92      
13 A" 3181 3019 7.42      
14 A" 1536 1458 7.97      
15 A" 1298 1232 0.43      
16 A" 1056 1002 0.11      
17 A" 787 747 3.98      
18 A" 268 254 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14777.5 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 14026.8 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 B2PLYP/6-31G*
ABC
0.99914 0.12500 0.11595

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.039 0.000
C2 0.603 -1.084 0.000
Br3 0.000 0.799 0.000
H4 1.222 -1.189 0.889
H5 1.222 -1.189 -0.889
H6 -0.209 -3.071 0.000
H7 -1.198 -1.892 0.886
H8 -1.198 -1.892 -0.886

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51732.89622.17892.17891.09561.09181.0918
C21.51731.97751.08861.08862.14642.16332.1633
Br32.89621.97752.49722.49723.87603.07633.0763
H42.17891.08862.49721.77862.52612.51983.0823
H52.17891.08862.49721.77862.52613.08232.5198
H61.09562.14643.87602.52612.52611.77541.7754
H71.09182.16333.07632.51983.08231.77541.7715
H81.09182.16333.07633.08232.51981.77541.7715

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 111.251 C1 C2 H4 112.424
C1 C2 H5 112.424 C2 C1 H6 109.397
C2 C1 H7 110.961 C2 C1 H8 110.961
Br3 C2 H4 105.361 Br3 C2 H5 105.361
H4 C2 H5 109.557 H6 C1 H7 108.507
H6 C1 H8 108.507 H7 C1 H8 108.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.456      
2 C -0.292      
3 Br -0.159      
4 H 0.196      
5 H 0.196      
6 H 0.161      
7 H 0.177      
8 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.480 -2.133 0.000 2.187
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.653 -1.041 0.000
y -1.041 -29.814 0.000
z 0.000 0.000 -32.004
Traceless
 xyz
x -0.744 -1.041 0.000
y -1.041 2.014 0.000
z 0.000 0.000 -1.271
Polar
3z2-r2-2.541
x2-y2-1.838
xy-1.041
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.799 -0.267 0.000
y -0.267 7.323 0.000
z 0.000 0.000 4.561


<r2> (average value of r2) Å2
<r2> 106.216
(<r2>)1/2 10.306