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-2677.406526
Energy at 298.15K-2677.417072
HF Energy-2677.091580
Nuclear repulsion energy232.860912
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' 3181 2963 20.72      
2 A' 3173 2956 21.12      
3 A' 3132 2917 6.81      
4 A' 3104 2892 17.90      
5 A' 1614 1504 7.73      
6 A' 1603 1493 2.33      
7 A' 1579 1471 4.27      
8 A' 1513 1410 7.40      
9 A' 1445 1346 5.19      
10 A' 1343 1251 38.39      
11 A' 1162 1083 4.86      
12 A' 1041 970 3.15      
13 A' 926 863 6.88      
14 A' 687 640 18.15      
15 A' 318 296 1.42      
16 A' 221 206 1.25      
17 A" 3243 3021 12.15      
18 A" 3180 2962 30.20      
19 A" 3157 2941 2.56      
20 A" 1611 1501 8.82      
21 A" 1407 1311 0.00      
22 A" 1327 1236 0.11      
23 A" 1128 1051 2.04      
24 A" 904 842 0.02      
25 A" 779 726 5.99      
26 A" 250 233 0.04      
27 A" 119 111 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 21572.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 20096.9 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
0.83519 0.05287 0.05115

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 0.857 0.000
C2 1.523 0.697 0.000
C3 2.206 2.087 0.000
Br4 -0.928 -0.919 0.000
H5 -0.346 1.377 0.890
H6 -0.346 1.377 -0.890
H7 1.828 0.130 0.882
H8 1.828 0.130 -0.882
H9 3.294 1.980 0.000
H10 1.917 2.658 -0.887
H11 1.917 2.658 0.887

Atom - Atom Distances (Å)
  C1 C2 C3 Br4 H5 H6 H7 H8 H9 H10 H11
C11.53122.52592.00391.08741.08742.15632.15633.48012.77552.7755
C21.53121.54872.93542.17892.17891.09271.09272.18692.18772.1877
C32.52591.54874.34252.79502.79502.18032.18031.09311.09381.0938
Br42.00392.93544.34252.53012.53013.07753.07755.12114.65534.6553
H51.08742.17892.79502.53011.78052.50663.07003.79583.14982.6005
H61.08742.17892.79502.53011.78053.07002.50663.79582.60053.1498
H72.15631.09272.18033.07752.50663.07001.76462.52033.08732.5300
H82.15631.09272.18033.07753.07002.50661.76462.52032.53003.0873
H93.48012.18691.09315.12113.79583.79582.52032.52031.77291.7729
H102.77552.18771.09384.65533.14982.60053.08732.53001.77291.7740
H112.77552.18771.09384.65532.60053.14982.53003.08731.77291.7740

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 110.191 C1 C2 H7 109.394
C1 C2 H8 109.394 C2 C1 Br4 111.576
C2 C1 H5 111.506 C2 C1 H6 111.506
C2 C3 H9 110.557 C2 C3 H10 110.582
C2 C3 H11 110.582 C3 C2 H7 110.063
C3 C2 H8 110.063 Br4 C1 H5 106.032
Br4 C1 H6 106.032 H5 C1 H6 109.912
H7 C2 H8 107.693 H9 C3 H10 108.330
H9 C3 H11 108.330 H10 C3 H11 108.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability