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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-2688.125438
Energy at 298.15K-2688.135999
HF Energy-2687.576982
Nuclear repulsion energy250.294737
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 MP3/6-31G*
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' 3210 3013 20.26      
2 A' 3187 2991 24.99      
3 A' 3172 2978 2.24      
4 A' 3103 2913 22.31      
5 A' 1564 1468 8.62      
6 A' 1554 1458 8.16      
7 A' 1483 1392 5.55      
8 A' 1309 1228 49.43      
9 A' 1230 1154 24.03      
10 A' 1094 1027 7.15      
11 A' 929 872 5.60      
12 A' 567 532 15.71      
13 A' 416 391 1.50      
14 A' 310 291 1.68      
15 A' 277 260 0.70      
16 A" 3205 3008 9.13      
17 A" 3178 2983 1.78      
18 A" 3100 2909 9.17      
19 A" 1545 1450 0.61      
20 A" 1542 1447 2.91      
21 A" 1472 1381 11.99      
22 A" 1411 1325 0.22      
23 A" 1193 1120 0.60      
24 A" 992 931 0.02      
25 A" 973 914 1.54      
26 A" 299 280 0.63      
27 A" 258 242 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 21285.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 19978.3 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 MP3/6-31G*
ABC
0.26752 0.09614 0.07583

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.455 -0.909 0.000
Br2 -0.066 1.011 0.000
H3 1.545 -0.875 0.000
C4 -0.066 -1.558 1.271
C5 -0.066 -1.558 -1.271
H6 -1.159 -1.524 1.299
H7 0.251 -2.608 1.299
H8 0.319 -1.054 2.160
H9 -1.159 -1.524 -1.299
H10 0.251 -2.608 -1.299
H11 0.319 -1.054 -2.160

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.98961.09071.51961.51962.16072.14792.16902.16072.14792.1690
Br21.98962.48062.86692.86693.05123.85793.01313.05123.85793.0131
H31.09072.48062.16292.16293.06882.52242.48993.06882.52242.4899
C41.51962.86692.16292.54261.09351.09641.09222.79292.79383.4895
C51.51962.86692.16292.54262.79292.79383.48951.09351.09641.0922
H62.16073.05123.06881.09352.79291.77781.77422.59753.14753.7906
H72.14793.85792.52241.09642.79381.77781.77803.14752.59713.7922
H82.16903.01312.48991.09223.48951.77421.77803.79063.79224.3199
H92.16073.05123.06882.79291.09352.59753.14753.79061.77781.7742
H102.14793.85792.52242.79381.09643.14752.59713.79221.77781.7780
H112.16903.01312.48993.48951.09223.79063.79224.31991.77421.7780

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 110.498 C1 C4 H7 109.312
C1 C4 H8 111.244 C1 C5 H9 110.498
C1 C5 H10 109.312 C1 C5 H11 111.244
Br2 C1 H3 103.395 Br2 C1 C4 108.828
Br2 C1 C5 108.828 H3 C1 C4 110.846
H3 C1 C5 110.846 C4 C1 C5 113.565
H6 C4 H7 108.541 H6 C4 H8 108.527
H7 C4 H8 108.657 H9 C5 H10 108.541
H9 C5 H11 108.527 H10 C5 H11 108.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability