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 C3H8 (Propane)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-118.281370
Energy at 298.15K-118.289908
HF Energy-118.281370
Nuclear repulsion energy82.724682
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(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3230 2925 73.96 82.63 0.58 0.73
2 A1 3164 2865 0.02 283.93 0.03 0.07
3 A1 3158 2860 53.78 24.13 0.49 0.66
4 A1 1631 1477 2.06 2.44 0.75 0.86
5 A1 1608 1456 0.18 32.87 0.75 0.86
6 A1 1544 1398 1.37 0.85 0.67 0.80
7 A1 1273 1152 1.03 3.53 0.30 0.46
8 A1 922 835 0.47 14.37 0.20 0.33
9 A1 390 353 0.06 0.34 0.13 0.23
10 A2 3217 2913 0.00 7.03 0.75 0.86
11 A2 1607 1455 0.00 28.65 0.75 0.86
12 A2 1420 1286 0.00 8.97 0.75 0.86
13 A2 972 881 0.00 0.00 0.75 0.86
14 A2 234 212 0.00 0.01 0.75 0.86
15 B1 3232 2926 133.31 28.59 0.75 0.86
16 B1 3183 2882 4.12 154.29 0.75 0.86
17 B1 1625 1471 8.64 0.06 0.75 0.86
18 B1 1318 1194 0.05 0.57 0.75 0.86
19 B1 800 724 2.10 0.10 0.75 0.86
20 B1 293 266 0.00 0.00 0.75 0.86
21 B2 3226 2921 39.50 58.41 0.75 0.86
22 B2 3157 2859 41.86 2.42 0.75 0.86
23 B2 1615 1462 0.75 0.22 0.75 0.86
24 B2 1534 1389 3.01 1.27 0.75 0.86
25 B2 1483 1343 3.90 0.08 0.75 0.86
26 B2 1118 1012 0.46 7.89 0.75 0.86
27 B2 1001 906 1.04 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 23976.3 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 21710.5 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 HF/6-31G(2df,p)
ABC
0.99362 0.28117 0.24916

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.585
C2 0.000 1.273 -0.260
C3 0.000 -1.273 -0.260
H4 0.870 0.000 1.237
H5 -0.870 0.000 1.237
H6 0.000 2.161 0.366
H7 0.000 -2.161 0.366
H8 0.877 1.317 -0.900
H9 -0.877 1.317 -0.900
H10 -0.877 -1.317 -0.900
H11 0.877 -1.317 -0.900

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.52781.52781.08781.08782.17242.17242.17012.17012.17012.1701
C21.52782.54662.14932.14931.08613.49111.08701.08702.80922.8092
C31.52782.54662.14932.14933.49111.08612.80922.80921.08701.0870
H41.08782.14932.14931.74092.48772.48772.51053.05903.05902.5105
H51.08782.14932.14931.74092.48772.48773.05902.51052.51053.0590
H62.17241.08613.49112.48772.48774.32271.75591.75593.80443.8044
H72.17243.49111.08612.48772.48774.32273.80443.80441.75591.7559
H82.17011.08702.80922.51053.05901.75593.80441.75483.16572.6349
H92.17011.08702.80923.05902.51051.75593.80441.75482.63493.1657
H102.17012.80921.08703.05902.51053.80441.75593.16572.63491.7548
H112.17012.80921.08702.51053.05903.80441.75592.63493.16571.7548

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.306 C1 C2 H8 111.060
C1 C2 H9 111.060 C1 C3 H7 111.306
C1 C3 H10 111.060 C1 C3 H11 111.060
C2 C1 C3 112.904 C2 C1 H4 109.358
C2 C1 H5 109.358 C3 C1 H4 109.358
C3 C1 H5 109.358 H4 C1 H5 106.290
H6 C2 H8 107.809 H6 C2 H9 107.809
H7 C3 H10 107.809 H7 C3 H11 107.809
H8 C2 H9 107.632 H10 C3 H11 107.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.212      
2 C -0.402      
3 C -0.402      
4 H 0.119      
5 H 0.119      
6 H 0.131      
7 H 0.131      
8 H 0.129      
9 H 0.129      
10 H 0.129      
11 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.065 0.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.292 0.000 0.000
y 0.000 -22.146 0.000
z 0.000 0.000 -21.719
Traceless
 xyz
x 0.641 0.000 0.000
y 0.000 -0.640 0.000
z 0.000 0.000 -0.000
Polar
3z2-r2-0.001
x2-y20.854
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.706 0.000 0.000
y 0.000 5.345 0.000
z 0.000 0.000 4.828


<r2> (average value of r2) Å2
<r2> 63.328
(<r2>)1/2 7.958