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 CH3CH2CH2Br (n-propyl bromide)

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-2677.696784
Energy at 298.15K-2677.707344
HF Energy-2677.305005
Nuclear repulsion energy235.042148
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 CID/3-21G*
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' 3186 2965 27.89      
2 A' 3178 2957 11.32      
3 A' 3144 2925 5.27      
4 A' 3115 2899 18.00      
5 A' 1620 1507 7.55      
6 A' 1608 1496 2.45      
7 A' 1592 1482 3.23      
8 A' 1518 1412 7.06      
9 A' 1446 1345 4.80      
10 A' 1342 1249 34.55      
11 A' 1164 1083 5.62      
12 A' 1039 967 1.68      
13 A' 921 857 6.27      
14 A' 705 656 19.52      
15 A' 328 305 1.60      
16 A' 223 208 1.42      
17 A" 3241 3016 10.70      
18 A" 3192 2970 25.25      
19 A" 3169 2948 4.04      
20 A" 1617 1504 9.16      
21 A" 1406 1309 0.02      
22 A" 1327 1235 0.18      
23 A" 1135 1056 2.34      
24 A" 916 852 0.01      
25 A" 784 730 5.52      
26 A" 246 229 0.04      
27 A" 120 112 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 21639.3 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 20135.4 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 CID/3-21G*
ABC
0.83021 0.05404 0.05223

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.849 0.000
C2 1.521 0.636 0.000
C3 2.262 1.995 0.000
Br4 -0.942 -0.878 0.000
H5 -0.330 1.378 0.891
H6 -0.330 1.378 -0.891
H7 1.799 0.056 0.882
H8 1.799 0.056 -0.882
H9 3.343 1.839 0.000
H10 2.000 2.578 -0.887
H11 2.000 2.578 0.887

Atom - Atom Distances (Å)
  C1 C2 C3 Br4 H5 H6 H7 H8 H9 H10 H11
C11.53562.53621.96791.08761.08762.15492.15493.48662.78812.7881
C21.53561.54842.89152.18412.18411.09161.09162.18342.18752.1875
C32.53621.54844.30452.81002.81002.18052.18051.09201.09291.0929
Br41.96792.89154.30452.50242.50243.02733.02735.07434.62464.6246
H51.08762.18412.81002.50241.78182.50673.07003.80783.16652.6205
H61.08762.18412.81002.50241.78183.07002.50673.80782.62053.1665
H72.15491.09162.18053.02732.50673.07001.76322.51813.08682.5300
H82.15491.09162.18053.02733.07002.50671.76322.51812.53003.0868
H93.48662.18341.09205.07433.80783.80782.51812.51811.77121.7712
H102.78812.18751.09294.62463.16652.62053.08682.53001.77121.7735
H112.78812.18751.09294.62462.62053.16652.53003.08681.77121.7735

picture of n-propyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 110.651 C1 C2 H7 109.040
C1 C2 H8 109.040 C2 C1 Br4 110.636
C2 C1 H5 111.601 C2 C1 H6 111.601
C2 C3 H9 110.375 C2 C3 H10 110.646
C2 C3 H11 110.646 C3 C2 H7 110.164
C3 C2 H8 110.164 Br4 C1 H5 106.372
Br4 C1 H6 106.372 H5 C1 H6 110.000
H7 C2 H8 107.719 H9 C3 H10 108.318
H9 C3 H11 108.318 H10 C3 H11 108.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability