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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-2688.425268
Energy at 298.15K-2688.435846
HF Energy-2687.771164
Nuclear repulsion energy253.848052
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 MP2/6-31G(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' 3216 3038 9.74      
2 A' 3196 3019 19.44      
3 A' 3152 2977 2.23      
4 A' 3101 2929 14.14      
5 A' 1532 1447 6.87      
6 A' 1521 1436 8.01      
7 A' 1436 1356 5.04      
8 A' 1283 1211 37.04      
9 A' 1198 1132 18.60      
10 A' 1078 1018 8.86      
11 A' 924 873 4.05      
12 A' 599 566 9.30      
13 A' 408 385 0.75      
14 A' 313 296 0.64      
15 A' 280 264 0.46      
16 A" 3213 3035 5.29      
17 A" 3192 3015 0.52      
18 A" 3099 2927 7.95      
19 A" 1510 1427 0.62      
20 A" 1508 1424 2.37      
21 A" 1420 1341 9.66      
22 A" 1367 1291 0.67      
23 A" 1169 1104 0.69      
24 A" 970 916 0.01      
25 A" 946 894 1.53      
26 A" 298 281 0.43      
27 A" 259 245 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21092.6 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 19921.9 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 MP2/6-31G(2df,p)
ABC
0.27026 0.09977 0.07828

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.893 -0.405 0.000
Br2 -0.663 0.740 0.000
H3 1.745 0.276 0.000
C4 0.893 -1.247 1.264
C5 0.893 -1.247 -1.264
H6 0.014 -1.893 1.289
H7 1.787 -1.876 1.283
H8 0.887 -0.623 2.157
H9 0.014 -1.893 -1.289
H10 1.787 -1.876 -1.283
H11 0.887 -0.623 -2.157

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.93181.09071.51891.51892.15662.14752.16772.15662.14752.1677
Br21.93182.45232.82292.82293.00933.80732.98503.00933.80732.9850
H31.09072.45232.15522.15523.06042.50662.48923.06042.50662.4892
C41.51892.82292.15522.52751.09121.09321.08982.77622.77173.4770
C51.51892.82292.15522.52752.77622.77173.47701.09121.09321.0898
H62.15663.00933.06041.09122.77621.77301.76892.57833.12433.7750
H72.14753.80732.50661.09322.77171.77301.77343.12432.56663.7704
H82.16772.98502.48921.08983.47701.76891.77343.77503.77044.3134
H92.15663.00933.06042.77621.09122.57833.12433.77501.77301.7689
H102.14753.80732.50662.77171.09323.12432.56663.77041.77301.7734
H112.16772.98502.48923.47701.08983.77503.77044.31341.76891.7734

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 110.354 C1 C4 H7 109.519
C1 C4 H8 111.327 C1 C5 H9 110.354
C1 C5 H10 109.519 C1 C5 H11 111.327
Br2 C1 H3 105.020 Br2 C1 C4 109.195
Br2 C1 C5 109.195 H3 C1 C4 110.266
H3 C1 C5 110.266 C4 C1 C5 112.609
H6 C4 H7 108.517 H6 C4 H8 108.402
H7 C4 H8 108.657 H9 C5 H10 108.517
H9 C5 H11 108.402 H10 C5 H11 108.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability