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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-2692.057758
Energy at 298.15K-2692.051293
HF Energy-2692.429360
Nuclear repulsion energy249.351576
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/6-31G(2df,p)
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' 3135 3025 21.79      
2 A' 3109 3001 30.53      
3 A' 3089 2981 0.89      
4 A' 3034 2928 28.81      
5 A' 1504 1452 4.79      
6 A' 1491 1439 7.32      
7 A' 1421 1371 2.74      
8 A' 1257 1213 39.39      
9 A' 1179 1138 26.72      
10 A' 1060 1023 8.60      
11 A' 887 856 7.14      
12 A' 543 524 16.65      
13 A' 401 387 1.49      
14 A' 298 288 1.86      
15 A' 261 252 0.68      
16 A" 3130 3020 10.50      
17 A" 3100 2992 2.09      
18 A" 3029 2923 10.93      
19 A" 1483 1431 0.25      
20 A" 1479 1427 1.94      
21 A" 1404 1355 6.92      
22 A" 1357 1310 2.13      
23 A" 1142 1102 1.29      
24 A" 953 920 0.36      
25 A" 941 908 0.86      
26 A" 286 276 0.58      
27 A" 241 233 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20606.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19885.5 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 B3LYP/6-31G(2df,p)
ABC
0.26669 0.09722 0.07638

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.906 -0.428 0.000
Br2 -0.672 0.751 0.000
H3 1.747 0.268 0.000
C4 0.906 -1.260 1.274
C5 0.906 -1.260 -1.274
H6 0.032 -1.916 1.312
H7 1.806 -1.886 1.301
H8 0.900 -0.627 2.164
H9 0.032 -1.916 -1.312
H10 1.806 -1.886 -1.301
H11 0.900 -0.627 -2.164

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.96991.09141.52151.52152.16782.15152.17322.16782.15152.1732
Br21.96992.46762.85602.85603.05383.84563.00883.05383.84563.0088
H31.09142.46762.15952.15953.07102.51682.49033.07102.51682.4903
C41.52152.85602.15952.54781.09391.09691.09212.80712.79843.4956
C51.52152.85602.15952.54782.80712.79843.49561.09391.09691.0921
H62.16783.05383.07101.09392.80711.77491.77242.62313.15823.8071
H72.15153.84562.51681.09692.79841.77491.77543.15822.60153.7962
H82.17323.00882.49031.09213.49561.77241.77543.80713.79624.3280
H92.16783.05383.07102.80711.09392.62313.15823.80711.77491.7724
H102.15153.84562.51682.79841.09693.15822.60153.79621.77491.7754
H112.17323.00882.49033.49561.09213.80713.79624.32801.77241.7754

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 110.956 C1 C4 H7 109.142
C1 C4 H8 111.547 C1 C5 H9 110.956
C1 C5 H10 109.142 C1 C5 H11 111.547
Br2 C1 H3 102.773 Br2 C1 C4 109.230
Br2 C1 C5 109.230 H3 C1 C4 110.610
H3 C1 C5 110.610 C4 C1 C5 113.801
H6 C4 H7 108.247 H6 C4 H8 108.499
H7 C4 H8 108.357 H9 C5 H10 108.247
H9 C5 H11 108.499 H10 C5 H11 108.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.094      
2 Br -0.083      
3 H 0.130      
4 C -0.365      
5 C -0.365      
6 H 0.135      
7 H 0.117      
8 H 0.136      
9 H 0.135      
10 H 0.117      
11 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.684 -1.427 0.000 2.207
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 156.209
(<r2>)1/2 12.498