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/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-130.866581
Energy at 298.15K-130.877005
HF Energy-130.571785
Nuclear repulsion energy108.185986
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/LANL2DZ
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' 3151 3034 54.24      
2 A' 3129 3013 41.65      
3 A' 3114 3000 6.06      
4 A' 3021 2910 35.88      
5 A' 1542 1485 11.71      
6 A' 1531 1475 10.43      
7 A' 1470 1416 5.84      
8 A' 1311 1263 48.66      
9 A' 1218 1173 27.37      
10 A' 1091 1051 10.62      
11 A' 893 860 5.85      
12 A' 534 514 10.56      
13 A' 405 390 1.22      
14 A' 295 285 1.26      
15 A' 265 255 0.81      
16 A" 3142 3026 18.74      
17 A" 3118 3003 7.08      
18 A" 3019 2908 21.15      
19 A" 1527 1470 1.98      
20 A" 1519 1463 3.90      
21 A" 1450 1397 12.03      
22 A" 1380 1329 2.28      
23 A" 1159 1117 2.66      
24 A" 984 948 0.41      
25 A" 963 928 1.95      
26 A" 282 272 0.20      
27 A" 233 224 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 20872.8 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 20102.6 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/LANL2DZ
ABC
0.25804 0.09047 0.07169

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.464 -0.943 0.000
Br2 -0.067 1.044 0.000
H3 1.565 -0.910 0.000
C4 -0.067 -1.607 1.296
C5 -0.067 -1.607 -1.296
H6 -1.170 -1.573 1.328
H7 0.254 -2.666 1.317
H8 0.324 -1.103 2.195
H9 -1.170 -1.573 -1.328
H10 0.254 -2.666 -1.317
H11 0.324 -1.103 -2.195

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.05731.10151.55001.55002.19862.17852.20552.19862.17852.2055
Br22.05732.54662.95082.95083.13563.94993.09553.13563.94993.0955
H31.10152.54662.19792.19793.11272.55652.52913.11272.55652.5291
C41.55002.95082.19792.59191.10401.10711.10292.84682.83763.5491
C51.55002.95082.19792.59192.84682.83763.54911.10401.10711.1029
H62.19863.13563.11271.10402.84681.79551.79102.65653.19703.8563
H72.17853.94992.55651.10712.83761.79551.79443.19702.63383.8450
H82.20553.09552.52911.10293.54911.79101.79443.85633.84504.3906
H92.19863.13563.11272.84681.10402.65653.19703.85631.79551.7910
H102.17853.94992.55652.83761.10713.19702.63383.84501.79551.7944
H112.20553.09552.52913.54911.10293.85633.84504.39061.79101.7944

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 110.748 C1 C4 H7 109.007
C1 C4 H8 111.364 C1 C5 H9 110.748
C1 C5 H10 109.007 C1 C5 H11 111.364
Br2 C1 H3 103.259 Br2 C1 C4 108.957
Br2 C1 C5 108.957 H3 C1 C4 110.842
H3 C1 C5 110.842 C4 C1 C5 113.457
H6 C4 H7 108.590 H6 C4 H8 108.491
H7 C4 H8 108.573 H9 C5 H10 108.590
H9 C5 H11 108.491 H10 C5 H11 108.573
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability