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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-2677.458062
Energy at 298.15K-2677.468558
HF Energy-2677.093759
Nuclear repulsion energy246.408769
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 MP4/3-21G
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' 3128 3034        
2 A' 3107 3013        
3 A' 3092 2999        
4 A' 3028 2937        
5 A' 1580 1533        
6 A' 1571 1523        
7 A' 1484 1440        
8 A' 1309 1269        
9 A' 1224 1187        
10 A' 1093 1060        
11 A' 879 853        
12 A' 550 534        
13 A' 408 396        
14 A' 300 291        
15 A' 263 256        
16 A" 3117 3023        
17 A" 3094 3001        
18 A" 3025 2933        
19 A" 1563 1516        
20 A" 1559 1512        
21 A" 1469 1425        
22 A" 1395 1353        
23 A" 1137 1103        
24 A" 994 964        
25 A" 972 943        
26 A" 282 274        
27 A" 253 245        

Unscaled Zero Point Vibrational Energy (zpe) 20939.7 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 20307.3 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 MP4/3-21G
ABC
0.26339 0.09225 0.07319

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.938 -0.434 0.000
Br2 -0.695 0.767 0.000
H3 1.783 0.263 0.000
C4 0.938 -1.290 1.282
C5 0.938 -1.290 -1.282
H6 0.055 -1.942 1.300
H7 1.844 -1.917 1.296
H8 0.928 -0.657 2.179
H9 0.055 -1.942 -1.300
H10 1.844 -1.917 -1.296
H11 0.928 -0.657 -2.179

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.02771.09511.54131.54132.17812.16772.19002.17812.16772.1900
Br22.02772.52922.92292.92293.09713.91553.06783.09713.91553.0678
H31.09512.52922.18342.18343.08842.53662.51463.08842.53662.5146
C41.54132.92292.18342.56361.09851.10141.09752.80532.80353.5177
C51.54132.92292.18342.56362.80532.80353.51771.09851.10141.0975
H62.17813.09713.08841.09852.80531.78941.78522.59923.15293.8095
H72.16773.91552.53661.10142.80351.78941.78963.15292.59273.8078
H82.19003.06782.51461.09753.51771.78521.78963.80953.80784.3571
H92.17813.09713.08842.80531.09852.59923.15293.80951.78941.7852
H102.16773.91552.53662.80351.10143.15292.59273.80781.78941.7896
H112.19003.06782.51463.51771.09753.80953.80784.35711.78521.7896

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 110.071 C1 C4 H7 109.088
C1 C4 H8 111.066 C1 C5 H9 110.071
C1 C5 H10 109.088 C1 C5 H11 111.066
Br2 C1 H3 104.157 Br2 C1 C4 109.206
Br2 C1 C5 109.206 H3 C1 C4 110.690
H3 C1 C5 110.690 C4 C1 C5 112.539
H6 C4 H7 108.859 H6 C4 H8 108.767
H7 C4 H8 108.950 H9 C5 H10 108.859
H9 C5 H11 108.767 H10 C5 H11 108.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability