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: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G2
 hartrees
Energy at 0K-2690.843952
Energy at 298.15K-2690.837385
HF Energy-2687.574359
Nuclear repulsion energy236.129944
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 HF/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' 3293 3102 27.59      
2 A' 3274 3085 40.53      
3 A' 3230 3044 11.26      
4 A' 3202 3017 33.64      
5 A' 1653 1557 3.29      
6 A' 1638 1543 0.15      
7 A' 1635 1541 3.40      
8 A' 1565 1475 0.61      
9 A' 1510 1423 8.17      
10 A' 1381 1301 66.01      
11 A' 1208 1138 2.02      
12 A' 1108 1044 0.89      
13 A' 968 912 5.68      
14 A' 695 655 41.16      
15 A' 329 310 3.71      
16 A' 231 218 1.77      
17 A" 3359 3165 13.42      
18 A" 3277 3088 52.97      
19 A" 3253 3065 6.32      
20 A" 1643 1548 6.59      
21 A" 1443 1359 0.02      
22 A" 1359 1281 0.51      
23 A" 1159 1092 1.70      
24 A" 927 873 0.01      
25 A" 800 753 2.55      
26 A" 253 238 0.04      
27 A" 121 114 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 22256.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 20969.8 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=FULL/6-31G*
ABC
0.84404 0.05462 0.05282

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.843 0.000
C2 1.504 0.660 0.000
C3 2.217 2.011 0.000
Br4 -0.926 -0.887 0.000
H5 -0.350 1.366 0.890
H6 -0.350 1.366 -0.890
H7 1.794 0.077 0.879
H8 1.794 0.077 -0.879
H9 3.302 1.875 0.000
H10 1.953 2.596 -0.885
H11 1.953 2.596 0.885

Atom - Atom Distances (Å)
  C1 C2 C3 Br4 H5 H6 H7 H8 H9 H10 H11
C11.51542.50601.96171.09051.09052.13992.13993.45942.76962.7696
C21.51541.52712.88112.17482.17481.09411.09412.16942.17552.1755
C32.50601.52714.27502.79252.79252.16602.16601.09301.09371.0937
Br41.96172.88114.27502.49002.49003.01723.01725.05014.60454.6045
H51.09052.17482.79252.49001.78042.50243.06453.79293.15692.6104
H61.09052.17482.79252.49001.78043.06452.50243.79292.61043.1569
H72.13991.09412.16603.01722.50243.06451.75782.50573.07982.5246
H82.13991.09412.16603.01723.06452.50241.75782.50572.52463.0798
H93.45942.16941.09305.05013.79293.79292.50572.50571.76751.7675
H102.76962.17551.09374.60453.15692.61043.07982.52461.76751.7700
H112.76962.17551.09374.60452.61043.15692.52463.07981.76751.7700

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 111.158 C1 C2 H7 109.211
C1 C2 H8 109.211 C2 C1 Br4 111.459
C2 C1 H5 112.346 C2 C1 H6 112.346
C2 C3 H9 110.515 C2 C3 H10 111.397
C2 C3 H11 111.397 C3 C2 H7 110.112
C3 C2 H8 110.112 Br4 C1 H5 105.365
Br4 C1 H6 105.365 H5 C1 H6 109.507
H7 C2 H8 106.936 H9 C3 H10 107.728
H9 C3 H11 107.728 H10 C3 H11 107.913
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability