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 C3H7 (n-Propyl radical)

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A"
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-20.873888
Energy at 298.15K 
HF Energy-20.498966
Nuclear repulsion energy44.538001
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/CEP-121G*
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 3301 3145 18.76      
2 A 3183 3033 19.86      
3 A 3166 3017 35.81      
4 A 3161 3011 42.81      
5 A 3106 2960 19.83      
6 A 3065 2920 29.22      
7 A 3018 2876 37.68      
8 A 1543 1471 4.79      
9 A 1537 1465 7.70      
10 A 1521 1449 1.01      
11 A 1505 1434 1.65      
12 A 1446 1377 3.12      
13 A 1386 1321 1.91      
14 A 1296 1235 0.24      
15 A 1203 1146 0.51      
16 A 1105 1053 0.17      
17 A 1074 1023 1.00      
18 A 928 884 1.34      
19 A 902 860 0.21      
20 A 762 726 1.03      
21 A 469 447 55.17      
22 A 364 347 7.78      
23 A 257 245 0.29      
24 A 151 144 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 19724.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 18793.2 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/CEP-121G*
ABC
1.07679 0.29642 0.25772

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.321 -0.299 -0.053
C2 0.094 0.563 0.076
C3 -1.214 -0.243 -0.054
H4 -2.087 0.410 0.044
H5 -1.263 -0.741 -1.028
H6 -1.274 -1.011 0.725
H7 0.098 1.079 1.050
H8 0.121 1.352 -0.687
H9 2.271 0.124 -0.362
H10 1.332 -1.296 0.380

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50552.53533.48282.79692.80092.14772.13721.08521.0862
C21.50551.54132.18662.18122.18411.10311.09702.26422.2541
C32.53531.54131.09531.09481.09572.16552.17363.51782.7888
H43.48282.18661.09531.77541.77402.49762.50914.38693.8361
H52.79692.18121.09481.77541.77383.07962.53163.69893.0041
H62.80092.18411.09571.77401.77382.52173.08563.87792.6441
H72.14771.10312.16552.49763.07962.52171.75822.76232.7591
H82.13721.09702.17362.50912.53163.08561.75822.49753.1003
H91.08522.26423.51784.38693.69893.87792.76232.49751.8566
H101.08622.25412.78883.83613.00412.64412.75913.10031.8566

picture of n-Propyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.630 C1 C2 H7 109.884
C1 C2 H8 109.407 C2 C1 H9 120.993
C2 C1 H10 119.984 C2 C3 H4 110.924
C2 C3 H5 110.524 C2 C3 H6 110.701
C3 C2 H7 108.817 C3 C2 H8 109.793
H4 C3 H5 108.320 H4 C3 H6 108.130
H5 C3 H6 108.143 H7 C2 H8 106.099
H9 C1 H10 117.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability