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All results from a given calculation for CH3CHBrCH3 (i-propyl bromide)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-33.626599
Energy at 298.15K-33.637184
HF Energy-33.626599
Nuclear repulsion energy69.885207
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 HF/CEP-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' 3348 3018 86.85      
2 A' 3321 2993 30.10      
3 A' 3297 2972 53.82      
4 A' 3215 2898 76.54      
5 A' 1641 1479 10.73      
6 A' 1628 1467 9.69      
7 A' 1571 1416 4.77      
8 A' 1373 1237 93.71      
9 A' 1297 1169 50.89      
10 A' 1165 1050 14.07      
11 A' 951 857 13.50      
12 A' 541 488 53.15      
13 A' 425 383 5.42      
14 A' 304 274 5.90      
15 A' 267 240 1.19      
16 A" 3324 2997 30.00      
17 A" 3293 2968 13.34      
18 A" 3209 2893 28.40      
19 A" 1625 1465 1.49      
20 A" 1616 1457 3.41      
21 A" 1558 1404 7.77      
22 A" 1483 1337 1.69      
23 A" 1244 1121 0.59      
24 A" 1047 944 0.00      
25 A" 1038 936 2.08      
26 A" 295 266 0.72      
27 A" 246 222 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 22159.2 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 19974.3 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 HF/CEP-31G
ABC
0.26227 0.09217 0.07294

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.459 -0.939 0.000
Br2 -0.067 1.035 0.000
H3 1.540 -0.885 0.000
C4 -0.067 -1.592 1.287
C5 -0.067 -1.592 -1.287
H6 -1.154 -1.569 1.320
H7 0.258 -2.634 1.309
H8 0.317 -1.092 2.173
H9 -1.154 -1.569 -1.320
H10 0.258 -2.634 -1.309
H11 0.317 -1.092 -2.173

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.04231.08261.53591.53592.17792.15152.18262.17792.15152.1826
Br22.04232.50372.92462.92463.11543.90893.06433.11543.90893.0643
H31.08262.50372.17672.17673.07762.53322.50193.07762.53322.5019
C41.53592.92462.17672.57411.08821.09221.08662.82532.81663.5165
C51.53592.92462.17672.57412.82532.81663.51651.08821.09221.0866
H62.17793.11543.07761.08822.82531.76891.76572.64093.16933.8200
H72.15153.90892.53321.09222.81661.76891.76823.16932.61863.8085
H82.18263.06432.50191.08663.51651.76571.76823.82003.80854.3451
H92.17793.11543.07762.82531.08822.64093.16933.82001.76891.7657
H102.15153.90892.53322.81661.09223.16932.61863.80851.76891.7682
H112.18263.06432.50193.51651.08663.82003.80854.34511.76571.7682

picture of i-propyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H6 111.042 C1 C4 H7 108.719
C1 C4 H8 111.510 C1 C5 H9 111.042
C1 C5 H10 108.719 C1 C5 H11 111.510
Br2 C1 H3 102.083 Br2 C1 C4 108.817
Br2 C1 C5 108.817 H3 C1 C4 111.280
H3 C1 C5 111.280 C4 C1 C5 113.852
H6 C4 H7 108.437 H6 C4 H8 108.560
H7 C4 H8 108.492 H9 C5 H10 108.437
H9 C5 H11 108.560 H10 C5 H11 108.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 Br -0.103      
3 H 0.164      
4 C -0.267      
5 C -0.267      
6 H 0.124      
7 H 0.106      
8 H 0.151      
9 H 0.124      
10 H 0.106      
11 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.596 -3.169 0.000 3.225
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.222 -0.778 0.000
y -0.778 -34.886 0.000
z 0.000 0.000 -35.322
Traceless
 xyz
x -0.118 -0.778 0.000
y -0.778 0.386 0.000
z 0.000 0.000 -0.268
Polar
3z2-r2-0.536
x2-y2-0.336
xy-0.778
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.764 -0.811 0.000
y -0.811 9.401 0.000
z 0.000 0.000 5.467


<r2> (average value of r2) Å2
<r2> 111.096
(<r2>)1/2 10.540