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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-2652.826088
Energy at 298.15K 
HF Energy-2652.686788
Nuclear repulsion energy162.999327
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/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' 3145 3012 18.84 80.24 0.69 0.82
2 A' 3119 2987 9.63 129.75 0.13 0.22
3 A' 3061 2932 18.49 156.22 0.06 0.10
4 A' 1490 1427 1.74 10.76 0.75 0.86
5 A' 1479 1417 0.76 9.35 0.75 0.86
6 A' 1406 1346 2.57 3.93 0.72 0.84
7 A' 1277 1223 59.23 3.57 0.68 0.81
8 A' 1090 1044 0.12 4.42 0.38 0.55
9 A' 985 944 14.35 4.05 0.74 0.85
10 A' 573 549 15.95 17.56 0.27 0.42
11 A' 288 276 2.11 2.85 0.48 0.64
12 A" 3192 3057 11.98 24.31 0.75 0.86
13 A" 3162 3028 4.99 101.55 0.75 0.86
14 A" 1473 1411 7.99 13.90 0.75 0.86
15 A" 1265 1211 0.53 3.36 0.75 0.86
16 A" 1034 990 0.09 5.83 0.75 0.86
17 A" 776 743 4.02 0.26 0.75 0.86
18 A" 269 258 0.01 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14542.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 13926.9 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/cc-pVDZ
ABC
1.00133 0.12452 0.11563

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.041 0.000
C2 0.599 -1.079 0.000
Br3 0.000 0.799 0.000
H4 1.226 -1.183 0.894
H5 1.226 -1.183 -0.894
H6 -0.195 -3.077 0.000
H7 -1.202 -1.902 0.892
H8 -1.202 -1.902 -0.892

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51722.89752.18552.18551.10291.09931.0993
C21.51721.97151.09701.09702.14942.17152.1715
Br32.89751.97152.49642.49643.88053.08773.0877
H42.18551.09702.49641.78842.53052.53213.0985
H52.18551.09702.49641.78842.53053.09852.5321
H61.10292.14943.88052.53052.53051.78601.7860
H71.09932.17153.08772.53213.09851.78601.7832
H81.09932.17153.08773.09852.53211.78601.7832

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 111.652 C1 C2 H4 112.450
C1 C2 H5 112.450 C2 C1 H6 109.220
C2 C1 H7 111.180 C2 C1 H8 111.180
Br3 C2 H4 105.305 Br3 C2 H5 105.305
H4 C2 H5 109.199 H6 C1 H7 108.390
H6 C1 H8 108.390 H7 C1 H8 108.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.031      
2 C -0.126      
3 Br -0.128      
4 H 0.076      
5 H 0.076      
6 H 0.037      
7 H 0.048      
8 H 0.048      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.450 -2.002 0.000 2.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.868 -0.995 0.001
y -0.995 -30.005 0.023
z 0.001 0.023 -32.134
Traceless
 xyz
x -0.799 -0.995 0.001
y -0.995 1.996 0.023
z 0.001 0.023 -1.198
Polar
3z2-r2-2.395
x2-y2-1.863
xy-0.995
xz0.001
yz0.023


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.770 -0.282 -0.000
y -0.282 7.534 -0.001
z -0.000 -0.001 4.372


<r2> (average value of r2) Å2
<r2> 106.653
(<r2>)1/2 10.327