return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/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/cc-pVTZ
 hartrees
Energy at 0K-2690.953839
Energy at 298.15K-2690.964387
HF Energy-2690.192241
Nuclear repulsion energy253.053686
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/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' 3184 3023 13.77      
2 A' 3161 3001 26.35      
3 A' 3132 2974 0.74      
4 A' 3071 2916 20.99      
5 A' 1518 1441 6.93      
6 A' 1507 1431 9.36      
7 A' 1420 1348 5.37      
8 A' 1273 1209 38.03      
9 A' 1191 1131 20.69      
10 A' 1070 1016 8.41      
11 A' 918 871 5.37      
12 A' 585 556 11.60      
13 A' 405 384 0.90      
14 A' 307 291 0.71      
15 A' 277 263 0.51      
16 A" 3180 3020 8.59      
17 A" 3155 2996 0.68      
18 A" 3069 2914 10.30      
19 A" 1497 1421 0.41      
20 A" 1494 1419 2.63      
21 A" 1406 1335 10.46      
22 A" 1361 1292 0.48      
23 A" 1166 1107 0.84      
24 A" 964 915 0.08      
25 A" 941 893 1.15      
26 A" 290 276 0.42      
27 A" 254 241 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 20896.7 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 19841.4 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/cc-pVTZ
ABC
0.27139 0.09861 0.07763

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.903 -0.413 0.000
Br2 -0.669 0.743 0.000
H3 1.740 0.281 0.000
C4 0.903 -1.250 1.261
C5 0.903 -1.250 -1.261
H6 0.027 -1.897 1.286
H7 1.796 -1.876 1.280
H8 0.896 -0.627 2.152
H9 0.027 -1.897 -1.286
H10 1.796 -1.876 -1.280
H11 0.896 -0.627 -2.152

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.95131.08731.51371.51372.14972.13912.16292.14972.13912.1629
Br21.95132.45282.83442.83443.01803.81772.99333.01803.81772.9933
H31.08732.45282.15302.15303.05432.50862.48363.05432.50862.4836
C41.51372.83442.15302.52301.08881.09121.08702.77022.76563.4702
C51.51372.83442.15302.52302.77022.76563.47021.08881.09121.0870
H62.14973.01803.05431.08882.77021.76891.76602.57173.11633.7668
H72.13913.81772.50861.09122.76561.76891.76953.11632.55963.7616
H82.16292.99332.48361.08703.47021.76601.76953.76683.76164.3046
H92.14973.01803.05432.77021.08882.57173.11633.76681.76891.7660
H102.13913.81772.50862.76561.09123.11632.55963.76161.76891.7695
H112.16292.99332.48363.47021.08703.76683.76164.30461.76601.7695

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 110.315 C1 C4 H7 109.336
C1 C4 H8 111.481 C1 C5 H9 110.315
C1 C5 H10 109.336 C1 C5 H11 111.481
Br2 C1 H3 103.995 Br2 C1 C4 109.116
Br2 C1 C5 109.116 H3 C1 C4 110.662
H3 C1 C5 110.662 C4 C1 C5 112.890
H6 C4 H7 108.474 H6 C4 H8 108.507
H7 C4 H8 108.660 H9 C5 H10 108.474
H9 C5 H11 108.507 H10 C5 H11 108.660
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability