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All results from a given calculation for C3H8 (Propane)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-117.613301
Energy at 298.15K-117.621862
HF Energy-117.613301
Nuclear repulsion energy82.520333
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/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 A1 3254 2937 61.01 77.31 0.57 0.73
2 A1 3203 2891 11.47 154.45 0.15 0.27
3 A1 3193 2882 23.32 134.83 0.00 0.01
4 A1 1680 1517 6.10 18.97 0.75 0.86
5 A1 1662 1500 0.65 37.77 0.75 0.86
6 A1 1582 1428 5.37 1.73 0.74 0.85
7 A1 1295 1169 2.65 5.02 0.47 0.64
8 A1 896 809 0.88 16.32 0.22 0.36
9 A1 402 363 0.23 0.45 0.14 0.24
10 A2 3244 2928 0.00 5.30 0.75 0.86
11 A2 1664 1502 0.00 46.67 0.75 0.86
12 A2 1455 1313 0.00 14.75 0.75 0.86
13 A2 1020 921 0.00 0.03 0.75 0.86
14 A2 234 211 0.00 0.00 0.75 0.86
15 B1 3264 2946 102.20 11.41 0.75 0.86
16 B1 3221 2907 0.00 169.89 0.75 0.86
17 B1 1682 1518 14.86 0.10 0.75 0.86
18 B1 1341 1210 0.66 1.32 0.75 0.86
19 B1 826 746 5.28 0.14 0.75 0.86
20 B1 289 261 0.00 0.02 0.75 0.86
21 B2 3249 2933 31.13 54.71 0.75 0.86
22 B2 3189 2878 35.19 4.39 0.75 0.86
23 B2 1669 1506 2.84 0.05 0.75 0.86
24 B2 1565 1412 5.49 3.28 0.75 0.86
25 B2 1502 1356 1.93 0.99 0.75 0.86
26 B2 1095 988 3.41 6.45 0.75 0.86
27 B2 1026 926 2.13 3.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 24348.9 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 21977.4 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 HF/3-21G*
ABC
0.97435 0.28119 0.24806

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.600
C2 0.000 1.275 -0.265
C3 0.000 -1.275 -0.265
H4 0.873 0.000 1.244
H5 -0.873 0.000 1.244
H6 0.000 2.167 0.351
H7 0.000 -2.167 0.351
H8 0.878 1.302 -0.902
H9 -0.878 1.302 -0.902
H10 -0.878 -1.302 -0.902
H11 0.878 -1.302 -0.902

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.54091.54091.08501.08502.18152.18152.17312.17312.17312.1731
C21.54092.54962.16012.16011.08453.49671.08501.08502.79582.7958
C31.54092.54962.16012.16013.49671.08452.79582.79581.08501.0850
H41.08502.16012.16011.74692.50142.50142.50963.06063.06062.5096
H51.08502.16012.16011.74692.50142.50143.06062.50962.50963.0606
H62.18151.08453.49672.50142.50144.33441.75751.75753.79153.7915
H72.18153.49671.08452.50142.50144.33443.79153.79151.75751.7575
H82.17311.08502.79582.50963.06061.75753.79151.75693.14132.6040
H92.17311.08502.79583.06062.50961.75753.79151.75692.60403.1413
H102.17312.79581.08503.06062.50963.79151.75753.14132.60401.7569
H112.17312.79581.08502.50963.06063.79151.75752.60403.14131.7569

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.196 C1 C2 H8 110.496
C1 C2 H9 110.496 C1 C3 H7 111.196
C1 C3 H10 110.496 C1 C3 H11 110.496
C2 C1 C3 111.647 C2 C1 H4 109.467
C2 C1 H5 109.467 C3 C1 H4 109.467
C3 C1 H5 109.467 H4 C1 H5 107.223
H6 C2 H8 108.214 H6 C2 H9 108.214
H7 C3 H10 108.214 H7 C3 H11 108.214
H8 C2 H9 108.124 H10 C3 H11 108.124
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.441      
2 C -0.579      
3 C -0.579      
4 H 0.206      
5 H 0.206      
6 H 0.199      
7 H 0.199      
8 H 0.197      
9 H 0.197      
10 H 0.197      
11 H 0.197      


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 0.039 0.039
CHELPG 0.000 0.000 0.003 0.003
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.703 0.000 0.000
y 0.000 -22.305 0.000
z 0.000 0.000 -22.031
Traceless
 xyz
x 0.465 0.000 0.000
y 0.000 -0.438 0.000
z 0.000 0.000 -0.027
Polar
3z2-r2-0.053
x2-y20.602
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.387 0.000 0.000
y 0.000 4.919 0.000
z 0.000 0.000 4.458


<r2> (average value of r2) Å2
<r2> 63.636
(<r2>)1/2 7.977