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

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-2677.761002
Energy at 298.15K-2677.771562
HF Energy-2677.306879
Nuclear repulsion energy249.303792
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 CCD/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' 3136 3000 24.61      
2 A' 3115 2979 18.61      
3 A' 3101 2966 4.45      
4 A' 3040 2908 20.29      
5 A' 1585 1516 8.83      
6 A' 1575 1507 7.95      
7 A' 1491 1426 5.67      
8 A' 1318 1261 43.15      
9 A' 1231 1178 18.47      
10 A' 1109 1060 6.12      
11 A' 878 840 4.99      
12 A' 581 556 10.23      
13 A' 413 395 0.80      
14 A' 304 291 1.25      
15 A' 274 262 0.49      
16 A" 3127 2991 9.81      
17 A" 3104 2969 2.79      
18 A" 3036 2904 8.43      
19 A" 1568 1500 0.98      
20 A" 1564 1496 3.18      
21 A" 1475 1411 11.26      
22 A" 1405 1344 0.96      
23 A" 1148 1098 1.01      
24 A" 1000 957 2.23      
25 A" 978 935 0.16      
26 A" 293 280 0.59      
27 A" 263 251 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 21055.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 20139.6 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 CCD/3-21G*
ABC
0.26222 0.09587 0.07542

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.471 -0.901 0.000
Br2 -0.068 1.012 0.000
H3 1.566 -0.883 0.000
C4 -0.068 -1.562 1.285
C5 -0.068 -1.562 -1.285
H6 -1.164 -1.513 1.295
H7 0.244 -2.617 1.310
H8 0.319 -1.054 2.176
H9 -1.164 -1.513 -1.295
H10 0.244 -2.617 -1.310
H11 0.319 -1.054 -2.176

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.98691.09491.54221.54222.17462.17112.18682.17462.17112.1868
Br21.98692.50142.87662.87663.04233.87073.02483.04233.87073.0248
H31.09492.50142.18682.18683.08722.54422.51413.08722.54422.5141
C41.54222.87662.18682.56931.09761.10061.09672.80382.81803.5192
C51.54222.87662.18682.56932.80382.81803.51921.09761.10061.0967
H62.17463.04233.08721.09762.80381.78951.78502.59093.16053.8029
H72.17113.87072.54421.10062.81801.78951.78953.16052.61933.8212
H82.18683.02482.51411.09673.51921.78501.78953.80293.82124.3522
H92.17463.04233.08722.80381.09762.59093.16053.80291.78951.7850
H102.17113.87072.54422.81801.10063.16052.61933.82121.78951.7895
H112.18683.02482.51413.51921.09673.80293.82124.35221.78501.7895

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 109.778 C1 C4 H7 109.332
C1 C4 H8 110.791 C1 C5 H9 109.778
C1 C5 H10 109.332 C1 C5 H11 110.791
Br2 C1 H3 104.785 Br2 C1 C4 108.536
Br2 C1 C5 108.536 H3 C1 C4 110.901
H3 C1 C5 110.901 C4 C1 C5 112.812
H6 C4 H7 108.992 H6 C4 H8 108.866
H7 C4 H8 109.052 H9 C5 H10 108.992
H9 C5 H11 108.866 H10 C5 H11 109.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability