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

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-2690.974858
Energy at 298.15K-2690.985404
HF Energy-2690.193243
Nuclear repulsion energy253.252289
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/aug-cc-pVTZ
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' 3177 3027 12.44      
2 A' 3154 3006 24.84      
3 A' 3125 2978 0.41      
4 A' 3064 2920 21.38      
5 A' 1522 1450 7.58      
6 A' 1509 1438 9.75      
7 A' 1423 1356 5.34      
8 A' 1269 1209 37.65      
9 A' 1194 1137 21.72      
10 A' 1070 1020 7.32      
11 A' 917 874 5.39      
12 A' 586 559 11.92      
13 A' 405 386 0.89      
14 A' 306 292 0.75      
15 A' 274 261 0.50      
16 A" 3173 3024 8.06      
17 A" 3149 3000 0.55      
18 A" 3062 2918 10.22      
19 A" 1500 1430 0.05      
20 A" 1497 1427 3.30      
21 A" 1408 1341 10.80      
22 A" 1364 1300 0.51      
23 A" 1167 1112 0.74      
24 A" 968 922 0.12      
25 A" 944 900 1.02      
26 A" 290 276 0.38      
27 A" 253 241 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20885.5 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 19901.8 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/aug-cc-pVTZ
ABC
0.27105 0.09896 0.07783

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.456 -0.884 0.000
Br2 -0.066 0.991 0.000
H3 1.542 -0.843 0.000
C4 -0.066 -1.530 1.263
C5 -0.066 -1.530 -1.263
H6 -1.155 -1.497 1.284
H7 0.253 -2.574 1.287
H8 0.316 -1.026 2.148
H9 -1.155 -1.497 -1.284
H10 0.253 -2.574 -1.287
H11 0.316 -1.026 -2.148

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.94651.08741.51101.51102.14882.13372.15742.14882.13372.1574
Br21.94652.43982.81952.81953.00403.80372.97183.00403.80372.9718
H31.08742.43982.15672.15673.05752.51262.48023.05752.51262.4802
C41.51102.81952.15672.52541.08931.09211.08792.77002.77333.4689
C51.51102.81952.15672.52542.77002.77333.46891.08931.09211.0879
H62.14883.00403.05751.08932.77001.77221.76942.56843.12253.7637
H72.13373.80372.51261.09212.77331.77221.77243.12252.57333.7680
H82.15742.97182.48021.08793.46891.76941.77243.76373.76804.2964
H92.14883.00403.05752.77001.08932.56843.12253.76371.77221.7694
H102.13373.80372.51262.77331.09213.12252.57333.76801.77221.7724
H112.15742.97182.48023.46891.08793.76373.76804.29641.76941.7724

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 110.397 C1 C4 H7 109.041
C1 C4 H8 111.181 C1 C5 H9 110.397
C1 C5 H10 109.041 C1 C5 H11 111.181
Br2 C1 H3 103.406 Br2 C1 C4 108.611
Br2 C1 C5 108.611 H3 C1 C4 111.153
H3 C1 C5 111.153 C4 C1 C5 113.368
H6 C4 H7 108.661 H6 C4 H8 108.720
H7 C4 H8 108.789 H9 C5 H10 108.661
H9 C5 H11 108.720 H10 C5 H11 108.789
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability