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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-2679.656890
Energy at 298.15K-2679.667389
HF Energy-2679.656890
Nuclear repulsion energy248.988605
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 B3PW91/3-21G
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' 3164 3041 25.08      
2 A' 3139 3017 10.78      
3 A' 3123 3001 6.09      
4 A' 3055 2936 21.88      
5 A' 1563 1502 11.40      
6 A' 1550 1490 11.61      
7 A' 1467 1410 9.40      
8 A' 1290 1239 44.17      
9 A' 1212 1165 37.23      
10 A' 1089 1047 12.86      
11 A' 903 868 7.89      
12 A' 561 540 14.52      
13 A' 409 394 1.16      
14 A' 300 289 2.28      
15 A' 263 253 0.56      
16 A" 3152 3030 9.75      
17 A" 3125 3003 4.58      
18 A" 3049 2931 8.18      
19 A" 1541 1481 2.12      
20 A" 1536 1476 4.19      
21 A" 1451 1395 19.43      
22 A" 1381 1328 1.61      
23 A" 1155 1110 4.34      
24 A" 986 948 3.40      
25 A" 976 938 0.60      
26 A" 286 275 0.70      
27 A" 245 235 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20984.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 20170.7 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 B3PW91/3-21G
ABC
0.26785 0.09458 0.07496

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.462 -0.916 0.000
Br2 -0.067 1.020 0.000
H3 1.554 -0.888 0.000
C4 -0.067 -1.571 1.269
C5 -0.067 -1.571 -1.269
H6 -1.161 -1.535 1.288
H7 0.251 -2.623 1.292
H8 0.316 -1.070 2.163
H9 -1.161 -1.535 -1.288
H10 0.251 -2.623 -1.292
H11 0.316 -1.070 -2.163

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.00671.09241.52311.52312.16292.15112.17382.16292.15112.1738
Br22.00672.50332.88532.88533.06393.87813.03243.06393.87813.0324
H31.09242.50332.16902.16903.07422.52532.49913.07422.52532.4991
C41.52312.88532.16902.53831.09511.09881.09422.78202.78683.4899
C51.52312.88532.16902.53832.78202.78683.48991.09511.09881.0942
H62.16293.06393.07421.09512.78201.78231.77892.57663.13603.7832
H72.15113.87812.52531.09882.78681.78231.78173.13602.58393.7887
H82.17383.03242.49911.09423.48991.77891.78173.78323.78874.3267
H92.16293.06393.07422.78201.09512.57663.13603.78321.78231.7789
H102.15113.87812.52532.78681.09883.13602.58393.78871.78231.7817
H112.17383.03242.49913.48991.09423.78323.78874.32671.77891.7817

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 110.329 C1 C4 H7 109.190
C1 C4 H8 111.255 C1 C5 H9 110.329
C1 C5 H10 109.190 C1 C5 H11 111.255
Br2 C1 H3 103.805 Br2 C1 C4 108.882
Br2 C1 C5 108.882 H3 C1 C4 110.982
H3 C1 C5 110.982 C4 C1 C5 112.874
H6 C4 H7 108.657 H6 C4 H8 108.686
H7 C4 H8 108.668 H9 C5 H10 108.657
H9 C5 H11 108.686 H10 C5 H11 108.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.497      
2 Br 0.025      
3 H 0.275      
4 C -0.585      
5 C -0.585      
6 H 0.231      
7 H 0.219      
8 H 0.233      
9 H 0.231      
10 H 0.219      
11 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.442 -2.168 0.000 2.212
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.996 -0.597 0.000
y -0.597 -37.113 0.000
z 0.000 0.000 -37.918
Traceless
 xyz
x -0.480 -0.597 0.000
y -0.597 0.844 0.000
z 0.000 0.000 -0.363
Polar
3z2-r2-0.726
x2-y2-0.883
xy-0.597
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.825 -0.561 0.000
y -0.561 8.443 0.000
z 0.000 0.000 5.445


<r2> (average value of r2) Å2
<r2> 158.426
(<r2>)1/2 12.587