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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-2652.979992
Energy at 298.15K-2652.988239
HF Energy-2652.790193
Nuclear repulsion energy163.828706
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-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' 3128 3001 25.11      
2 A' 3114 2987 1.89      
3 A' 3053 2929 18.40      
4 A' 1513 1452 2.14      
5 A' 1499 1438 1.29      
6 A' 1423 1365 4.12      
7 A' 1288 1236 52.16      
8 A' 1087 1043 0.06      
9 A' 983 943 14.87      
10 A' 572 549 15.11      
11 A' 287 275 1.82      
12 A" 3182 3053 8.89      
13 A" 3144 3016 7.22      
14 A" 1499 1438 8.94      
15 A" 1277 1225 0.35      
16 A" 1043 1001 0.15      
17 A" 779 748 3.59      
18 A" 260 249 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14564.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 13973.4 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-pVTZ
ABC
1.01187 0.12569 0.11667

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.032 0.000
C2 0.599 -1.076 0.000
Br3 0.000 0.795 0.000
H4 1.216 -1.177 0.886
H5 1.216 -1.177 -0.886
H6 -0.202 -3.057 0.000
H7 -1.193 -1.890 0.882
H8 -1.193 -1.890 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51302.88442.17172.17171.09121.08731.0873
C21.51301.96461.08401.08402.13752.15722.1572
Br32.88441.96462.48072.48073.85803.06803.0680
H42.17171.08402.48071.77132.51582.51213.0719
H52.17171.08402.48071.77132.51583.07192.5121
H61.09122.13753.85802.51582.51581.76741.7674
H71.08732.15723.06802.51213.07191.76741.7647
H81.08732.15723.06803.07192.51211.76741.7647

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 111.422 C1 C2 H4 112.442
C1 C2 H5 112.442 C2 C1 H6 109.264
C2 C1 H7 111.060 C2 C1 H8 111.060
Br3 C2 H4 105.237 Br3 C2 H5 105.237
H4 C2 H5 109.580 H6 C1 H7 108.447
H6 C1 H8 108.447 H7 C1 H8 108.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.308      
2 C -0.171      
3 Br -0.145      
4 H 0.135      
5 H 0.135      
6 H 0.112      
7 H 0.121      
8 H 0.121      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 -2.104 0.000 2.155
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.169 -0.994 0.000
y -0.994 -30.375 0.000
z 0.000 0.000 -32.417
Traceless
 xyz
x -0.773 -0.994 0.000
y -0.994 1.918 0.000
z 0.000 0.000 -1.145
Polar
3z2-r2-2.291
x2-y2-1.794
xy-0.994
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.620 -0.180 0.000
y -0.180 8.416 0.000
z 0.000 0.000 5.178


<r2> (average value of r2) Å2
<r2> 105.999
(<r2>)1/2 10.296