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

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-34.527628
Energy at 298.15K-34.537964
HF Energy-34.527628
Nuclear repulsion energy69.405323
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3116 3036 53.36      
2 A' 3085 3006 32.92      
3 A' 3068 2990 10.54      
4 A' 2987 2910 47.44      
5 A' 1527 1488 9.42      
6 A' 1509 1471 11.25      
7 A' 1442 1405 6.59      
8 A' 1255 1223 55.30      
9 A' 1187 1156 47.14      
10 A' 1061 1034 11.39      
11 A' 880 858 11.27      
12 A' 504 491 27.47      
13 A' 397 387 3.32      
14 A' 280 272 4.52      
15 A' 244 238 1.12      
16 A" 3107 3027 20.72      
17 A" 3069 2991 8.71      
18 A" 2980 2904 15.31      
19 A" 1509 1470 1.77      
20 A" 1497 1459 3.07      
21 A" 1426 1390 15.36      
22 A" 1362 1327 4.11      
23 A" 1150 1121 2.27      
24 A" 960 936 0.67      
25 A" 952 928 1.57      
26 A" 269 262 0.79      
27 A" 221 215 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 20521.1 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 19997.8 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 B3LYP/CEP-121G
ABC
0.25945 0.09049 0.07174

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.462 -0.961 0.000
Br2 -0.067 1.044 0.000
H3 1.554 -0.898 0.000
C4 -0.067 -1.603 1.293
C5 -0.067 -1.603 -1.293
H6 -1.162 -1.577 1.326
H7 0.254 -2.656 1.328
H8 0.320 -1.094 2.182
H9 -1.162 -1.577 -1.326
H10 0.254 -2.656 -1.328
H11 0.320 -1.094 -2.182

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.07451.09401.53741.53742.18532.16322.19052.18532.16322.1905
Br22.07452.52982.94642.94643.13513.94483.07983.13513.94483.0798
H31.09402.52982.19042.19043.09822.55852.51423.09822.55852.5142
C41.53742.94642.19042.58631.09631.10141.09482.83922.84343.5334
C51.53742.94642.19042.58632.83922.84343.53341.09631.10141.0948
H62.18533.13513.09821.09632.83921.78101.77882.65213.19663.8389
H72.16323.94482.55851.10142.84341.78101.78083.19662.65693.8425
H82.19053.07982.51421.09483.53341.77881.78083.83893.84254.3637
H92.18533.13513.09822.83921.09632.65213.19663.83891.78101.7788
H102.16323.94482.55852.84341.10143.19662.65693.84251.78101.7808
H112.19053.07982.51423.53341.09483.83893.84254.36371.77881.7808

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 111.039 C1 C4 H7 108.997
C1 C4 H8 111.539 C1 C5 H9 111.039
C1 C5 H10 108.997 C1 C5 H11 111.539
Br2 C1 H3 101.430 Br2 C1 C4 108.408
Br2 C1 C5 108.408 H3 C1 C4 111.579
H3 C1 C5 111.579 C4 C1 C5 114.519
H6 C4 H7 108.269 H6 C4 H8 108.549
H7 C4 H8 108.356 H9 C5 H10 108.269
H9 C5 H11 108.549 H10 C5 H11 108.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.305      
2 Br -0.015      
3 H 0.194      
4 C -0.430      
5 C -0.430      
6 H 0.168      
7 H 0.150      
8 H 0.175      
9 H 0.168      
10 H 0.150      
11 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.558 -2.692 0.000 2.749
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.370 -0.743 0.000
y -0.743 -34.336 0.000
z 0.000 0.000 -35.239
Traceless
 xyz
x -0.583 -0.743 0.000
y -0.743 0.969 0.000
z 0.000 0.000 -0.386
Polar
3z2-r2-0.771
x2-y2-1.035
xy-0.743
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.671 -0.661 0.000
y -0.661 10.410 0.000
z 0.000 0.000 6.635


<r2> (average value of r2) Å2
<r2> 112.341
(<r2>)1/2 10.599