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: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-118.461463
Energy at 298.15K-118.469876
HF Energy-118.461463
Nuclear repulsion energy82.194890
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 B3PW91/3-21G*
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 3125 2998 43.69      
2 A1 3054 2930 23.51      
3 A1 3049 2926 10.71      
4 A1 1570 1506 7.98      
5 A1 1549 1486 1.32      
6 A1 1464 1404 6.59      
7 A1 1204 1155 3.28      
8 A1 876 841 1.41      
9 A1 377 361 0.39      
10 A2 3115 2989 0.00      
11 A2 1551 1488 0.00      
12 A2 1357 1302 0.00      
13 A2 954 915 0.00      
14 A2 225 216 0.00      
15 B1 3130 3003 78.83      
16 B1 3082 2957 0.89      
17 B1 1570 1506 18.48      
18 B1 1243 1193 1.42      
19 B1 775 744 7.94      
20 B1 277 265 0.00      
21 B2 3121 2994 23.64      
22 B2 3047 2923 29.55      
23 B2 1557 1494 3.97      
24 B2 1446 1388 9.04      
25 B2 1392 1335 2.25      
26 B2 1062 1019 2.28      
27 B2 962 923 5.24      

Unscaled Zero Point Vibrational Energy (zpe) 23065.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 22129.4 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 B3PW91/3-21G*
ABC
0.96340 0.28095 0.24792

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.600
C2 0.000 1.273 -0.265
C3 0.000 -1.273 -0.265
H4 0.883 0.000 1.252
H5 -0.883 0.000 1.252
H6 0.000 2.177 0.356
H7 0.000 -2.177 0.356
H8 0.888 1.299 -0.909
H9 -0.888 1.299 -0.909
H10 -0.888 -1.299 -0.909
H11 0.888 -1.299 -0.909

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.53891.53891.09841.09842.19052.19052.17992.17992.17992.1799
C21.53892.54622.16882.16881.09673.50551.09741.09742.79612.7961
C31.53892.54622.16882.16883.50551.09672.79612.79611.09741.0974
H41.09842.16882.16881.76692.51452.51452.52183.08183.08182.5218
H51.09842.16882.16881.76692.51452.51453.08182.52182.52183.0818
H62.19051.09673.50552.51452.51454.35381.77791.77793.80403.8040
H72.19053.50551.09672.51452.51454.35383.80403.80401.77791.7779
H82.17991.09742.79612.52183.08181.77793.80401.77593.14662.5976
H92.17991.09742.79613.08182.52181.77793.80401.77592.59763.1466
H102.17992.79611.09743.08182.52183.80401.77793.14662.59761.7759
H112.17992.79611.09742.52183.08183.80401.77792.59763.14661.7759

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.316 C1 C2 H8 110.441
C1 C2 H9 110.441 C1 C3 H7 111.316
C1 C3 H10 110.441 C1 C3 H11 110.441
C2 C1 C3 111.634 C2 C1 H4 109.503
C2 C1 H5 109.503 C3 C1 H4 109.503
C3 C1 H5 109.503 H4 C1 H5 107.086
H6 C2 H8 108.256 H6 C2 H9 108.256
H7 C3 H10 108.256 H7 C3 H11 108.256
H8 C2 H9 108.028 H10 C3 H11 108.028
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.444      
2 C -0.609      
3 C -0.609      
4 H 0.211      
5 H 0.211      
6 H 0.207      
7 H 0.207      
8 H 0.206      
9 H 0.206      
10 H 0.206      
11 H 0.206      


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 0.028 0.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.205 0.000 0.000
y 0.000 -21.686 0.000
z 0.000 0.000 -21.484
Traceless
 xyz
x 0.379 0.000 0.000
y 0.000 -0.341 0.000
z 0.000 0.000 -0.038
Polar
3z2-r2-0.076
x2-y20.481
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.467 0.000 0.000
y 0.000 5.059 0.000
z 0.000 0.000 4.558


<r2> (average value of r2) Å2
<r2> 63.489
(<r2>)1/2 7.968