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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-2688.148826
Energy at 298.15K-2688.159342
HF Energy-2687.576507
Nuclear repulsion energy249.647306
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 MP4/6-31G*
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' 3166 3023        
2 A' 3141 2999        
3 A' 3116 2976        
4 A' 3058 2920        
5 A' 1548 1478        
6 A' 1538 1468        
7 A' 1463 1397        
8 A' 1288 1230        
9 A' 1214 1159        
10 A' 1078 1029        
11 A' 914 873        
12 A' 554 529        
13 A' 410 392        
14 A' 306 292        
15 A' 275 263        
16 A" 3162 3019        
17 A" 3136 2994        
18 A" 3054 2916        
19 A" 1530 1461        
20 A" 1526 1457        
21 A" 1450 1385        
22 A" 1393 1330        
23 A" 1176 1123        
24 A" 979 935        
25 A" 960 917        
26 A" 294 280        
27 A" 259 247        

Unscaled Zero Point Vibrational Energy (zpe) 20993.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 20044.9 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 MP4/6-31G*
ABC
0.26637 0.09565 0.07548

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.457 -0.913 0.000
Br2 -0.066 1.014 0.000
H3 1.552 -0.878 0.000
C4 -0.066 -1.562 1.274
C5 -0.066 -1.562 -1.274
H6 -1.162 -1.525 1.300
H7 0.250 -2.615 1.302
H8 0.320 -1.056 2.165
H9 -1.162 -1.525 -1.300
H10 0.250 -2.615 -1.302
H11 0.320 -1.056 -2.165

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.99691.09561.52201.52202.16502.15262.17432.16502.15262.1743
Br21.99692.48992.87312.87313.05593.86813.02033.05593.86813.0203
H31.09562.48992.17002.17003.07862.53142.49763.07862.53142.4976
C41.52202.87312.17002.54711.09701.10001.09562.79732.80033.4973
C51.52202.87312.17002.54712.79732.80033.49731.09701.10001.0956
H62.16503.05593.07861.09702.79731.78341.77992.59963.15423.7981
H72.15263.86812.53141.10002.80031.78341.78353.15422.60373.8022
H82.17433.02032.49761.09563.49731.77991.78353.79813.80224.3306
H92.16503.05593.07862.79731.09702.59963.15423.79811.78341.7799
H102.15263.86812.53142.80031.10003.15422.60373.80221.78341.7835
H112.17433.02032.49763.49731.09563.79813.80224.33061.77991.7835

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 110.465 C1 C4 H7 109.312
C1 C4 H8 111.288 C1 C5 H9 110.465
C1 C5 H10 109.312 C1 C5 H11 111.288
Br2 C1 H3 103.367 Br2 C1 C4 108.721
Br2 C1 C5 108.721 H3 C1 C4 110.940
H3 C1 C5 110.940 C4 C1 C5 113.601
H6 C4 H7 108.535 H6 C4 H8 108.534
H7 C4 H8 108.645 H9 C5 H10 108.535
H9 C5 H11 108.534 H10 C5 H11 108.645
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability