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

using model chemistry: ROHF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at ROHF/3-21G*
 hartrees
Energy at 0K-2677.308270
Energy at 298.15K-2677.319005
HF Energy-2677.308270
Nuclear repulsion energy251.228584
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 ROHF/3-21G*
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' 3312 3009 24.55      
2 A' 3283 2982 10.02      
3 A' 3263 2965 17.29      
4 A' 3202 2909 30.36      
5 A' 1676 1523 10.59      
6 A' 1666 1513 8.33      
7 A' 1589 1444 6.67      
8 A' 1397 1269 58.98      
9 A' 1307 1187 27.80      
10 A' 1186 1078 9.39      
11 A' 921 837 8.75      
12 A' 605 550 22.04      
13 A' 435 396 1.31      
14 A' 321 292 2.16      
15 A' 287 261 0.62      
16 A" 3288 2987 11.85      
17 A" 3261 2963 4.37      
18 A" 3196 2904 10.82      
19 A" 1656 1505 1.20      
20 A" 1654 1503 4.15      
21 A" 1572 1429 12.36      
22 A" 1487 1351 0.60      
23 A" 1214 1103 0.91      
24 A" 1062 965 2.90      
25 A" 1036 941 0.11      
26 A" 309 281 0.55      
27 A" 270 245 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 22227.3 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 20193.5 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 ROHF/3-21G*
ABC
0.26729 0.09703 0.07641

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.925 -0.402 0.000
Br2 -0.685 0.740 0.000
H3 1.749 0.292 0.000
C4 0.925 -1.250 1.273
C5 0.925 -1.250 -1.273
H6 0.060 -1.901 1.289
H7 1.821 -1.862 1.297
H8 0.906 -0.626 2.156
H9 0.060 -1.901 -1.289
H10 1.821 -1.862 -1.297
H11 0.906 -0.626 -2.156

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.97341.07771.52961.52962.15802.14892.16752.15802.14892.1675
Br21.97342.47442.85872.85873.03173.83843.00763.03173.83843.0076
H31.07772.47442.16322.16323.05392.51572.49023.05392.51572.4902
C41.52962.85872.16322.54531.08241.08571.08162.78102.78933.4848
C51.52962.85872.16322.54532.78102.78933.48481.08241.08571.0816
H62.15803.03173.05391.08242.78101.76221.75872.57823.12923.7695
H72.14893.83842.51571.08572.78931.76221.76133.12922.59353.7794
H82.16753.00762.49021.08163.48481.75871.76133.76953.77944.3115
H92.15803.03173.05392.78101.08242.57823.12923.76951.76221.7587
H102.14893.83842.51572.78931.08573.12922.59353.77941.76221.7613
H112.16753.00762.49023.48481.08163.76953.77944.31151.75871.7613

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 110.244 C1 C4 H7 109.328
C1 C4 H8 111.048 C1 C5 H9 110.244
C1 C5 H10 109.328 C1 C5 H11 111.048
Br2 C1 H3 104.529 Br2 C1 C4 108.727
Br2 C1 C5 108.727 H3 C1 C4 110.942
H3 C1 C5 110.942 C4 C1 C5 112.611
H6 C4 H7 108.736 H6 C4 H8 108.722
H7 C4 H8 108.715 H9 C5 H10 108.736
H9 C5 H11 108.722 H10 C5 H11 108.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.319      
2 Br -0.117      
3 H 0.264      
4 C -0.572      
5 C -0.572      
6 H 0.223      
7 H 0.208      
8 H 0.227      
9 H 0.223      
10 H 0.208      
11 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.770 -1.439 0.000 2.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.388 -0.588 0.000
y -0.588 -38.690 0.000
z 0.000 0.000 -38.574
Traceless
 xyz
x 1.244 -0.588 0.000
y -0.588 -0.709 0.000
z 0.000 0.000 -0.535
Polar
3z2-r2-1.069
x2-y21.302
xy-0.588
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 156.365
(<r2>)1/2 12.505