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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-2661.145267
Energy at 298.15K-2661.155615
HF Energy-2660.973096
Nuclear repulsion energy248.416152
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/STO-3G
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' 3559 3103 2.40      
2 A' 3552 3097 1.98      
3 A' 3421 2983 4.25      
4 A' 3372 2940 1.82      
5 A' 1730 1508 0.95      
6 A' 1725 1504 1.92      
7 A' 1617 1410 0.85      
8 A' 1446 1261 44.26      
9 A' 1318 1149 11.89      
10 A' 1193 1040 6.49      
11 A' 1000 872 1.62      
12 A' 677 590 4.21      
13 A' 427 372 0.38      
14 A' 314 274 0.38      
15 A' 249 217 0.08      
16 A" 3558 3102 0.60      
17 A" 3551 3096 0.43      
18 A" 3373 2941 1.97      
19 A" 1723 1503 0.40      
20 A" 1720 1500 0.08      
21 A" 1606 1400 0.04      
22 A" 1507 1314 7.58      
23 A" 1252 1091 3.47      
24 A" 1074 936 0.16      
25 A" 1043 910 0.67      
26 A" 300 261 0.93      
27 A" 236 205 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23270.4 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 20289.5 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/STO-3G
ABC
0.25974 0.09481 0.07444

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.870 -0.438 0.000
Br2 -0.649 0.787 0.000
H3 1.787 0.190 0.000
C4 0.870 -1.322 1.292
C5 0.870 -1.322 -1.292
H6 -0.031 -1.956 1.332
H7 1.760 -1.976 1.295
H8 0.896 -0.691 2.198
H9 -0.031 -1.956 -1.332
H10 1.760 -1.976 -1.295
H11 0.896 -0.691 -2.198

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.95171.11091.56531.56532.21152.19832.21232.21152.19832.2123
Br21.95172.50732.90232.90233.11133.88743.06583.11133.88743.0658
H31.11092.50732.18952.18953.11202.52372.52993.11202.52372.5299
C41.56532.90232.18952.58481.10351.10421.10342.84652.81353.5466
C51.56532.90232.18952.58482.84652.81353.54661.10351.10421.1034
H62.21153.11133.11201.10352.84651.79171.79152.66363.17983.8622
H72.19833.88742.52371.10422.81351.79171.79213.17982.59073.8209
H82.21233.06582.52991.10343.54661.79151.79213.86223.82094.3954
H92.21153.11133.11202.84651.10352.66363.17983.86221.79171.7915
H102.19833.88742.52372.81351.10423.17982.59073.82091.79171.7921
H112.21233.06582.52993.54661.10343.86223.82094.39541.79151.7921

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 110.732 C1 C4 H7 109.666
C1 C4 H8 110.802 C1 C5 H9 110.732
C1 C5 H10 109.666 C1 C5 H11 110.802
Br2 C1 H3 106.660 Br2 C1 C4 110.746
Br2 C1 C5 110.746 H3 C1 C4 108.608
H3 C1 C5 108.608 C4 C1 C5 111.313
H6 C4 H7 108.500 H6 C4 H8 108.536
H7 C4 H8 108.541 H9 C5 H10 108.500
H9 C5 H11 108.536 H10 C5 H11 108.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability