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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-2663.142565
Energy at 298.15K-2663.152821
HF Energy-2663.142565
Nuclear repulsion energy249.436948
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 B3PW91/STO-3G
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' 3514 3110 0.68      
2 A' 3501 3099 0.43      
3 A' 3386 2997 2.68      
4 A' 3332 2949 0.96      
5 A' 1685 1491 3.35      
6 A' 1679 1486 5.57      
7 A' 1578 1397 0.95      
8 A' 1401 1240 41.18      
9 A' 1284 1136 18.09      
10 A' 1165 1031 12.33      
11 A' 975 863 2.19      
12 A' 653 578 4.82      
13 A' 420 372 0.53      
14 A' 308 273 0.82      
15 A' 243 215 0.12      
16 A" 3513 3109 0.12      
17 A" 3500 3097 0.21      
18 A" 3332 2949 0.80      
19 A" 1676 1483 1.20      
20 A" 1673 1481 0.47      
21 A" 1563 1384 1.87      
22 A" 1472 1303 4.79      
23 A" 1228 1087 4.83      
24 A" 1047 926 0.13      
25 A" 1022 904 2.04      
26 A" 292 259 0.84      
27 A" 226 200 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 22833.8 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 20207.9 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 B3PW91/STO-3G
ABC
0.26286 0.09551 0.07506

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.870 -0.441 0.000
Br2 -0.648 0.783 0.000
H3 1.778 0.190 0.000
C4 0.870 -1.313 1.285
C5 0.870 -1.313 -1.285
H6 -0.027 -1.948 1.326
H7 1.758 -1.963 1.289
H8 0.895 -0.682 2.184
H9 -0.027 -1.948 -1.326
H10 1.758 -1.963 -1.289
H11 0.895 -0.682 -2.184

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.95011.10641.55251.55252.19802.18332.19762.19802.18332.1976
Br21.95012.49732.88932.88933.09883.87203.04923.09883.87203.0492
H31.10642.49732.17632.17633.09642.51012.51243.09642.51012.5124
C41.55252.88932.17632.56911.09931.10071.09932.83192.79893.5259
C51.55252.88932.17632.56912.83192.79893.52591.09931.10071.0993
H62.19803.09883.09641.09932.83191.78511.78592.65113.16553.8433
H72.18333.87202.51011.10072.79891.78511.78573.16552.57773.8012
H82.19763.04922.51241.09933.52591.78591.78573.84333.80124.3685
H92.19803.09883.09642.83191.09932.65113.16553.84331.78511.7859
H102.18333.87202.51012.79891.10073.16552.57773.80121.78511.7857
H112.19763.04922.51243.52591.09933.84333.80124.36851.78591.7857

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 110.805 C1 C4 H7 109.569
C1 C4 H8 110.775 C1 C5 H9 110.805
C1 C5 H10 109.569 C1 C5 H11 110.775
Br2 C1 H3 106.281 Br2 C1 C4 110.648
Br2 C1 C5 110.648 H3 C1 C4 108.706
H3 C1 C5 108.706 C4 C1 C5 111.667
H6 C4 H7 108.468 H6 C4 H8 108.640
H7 C4 H8 108.521 H9 C5 H10 108.468
H9 C5 H11 108.640 H10 C5 H11 108.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.091      
2 Br -0.050      
3 H 0.091      
4 C -0.230      
5 C -0.230      
6 H 0.085      
7 H 0.083      
8 H 0.086      
9 H 0.085      
10 H 0.083      
11 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.280 -1.141 0.000 1.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.767 -0.167 0.000
y -0.167 -35.417 0.000
z 0.000 0.000 -35.333
Traceless
 xyz
x 0.608 -0.167 0.000
y -0.167 -0.367 0.000
z 0.000 0.000 -0.241
Polar
3z2-r2-0.482
x2-y20.650
xy-0.167
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.595 -1.131 0.000
y -1.131 3.471 0.000
z 0.000 0.000 2.683


<r2> (average value of r2) Å2
<r2> 156.997
(<r2>)1/2 12.530