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All results from a given calculation for C3H8 (Propane)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-119.101874
Energy at 298.15K-119.110225
HF Energy-119.101874
Nuclear repulsion energy82.417508
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3130 2994 51.81      
2 A1 3051 2919 25.70      
3 A1 3048 2916 23.43      
4 A1 1539 1472 4.68      
5 A1 1516 1451 0.00      
6 A1 1443 1381 2.67      
7 A1 1189 1137 1.54      
8 A1 891 852 1.06      
9 A1 365 349 0.17      
10 A2 3118 2983 0.00      
11 A2 1515 1449 0.00      
12 A2 1330 1272 0.00      
13 A2 919 879 0.00      
14 A2 220 211 0.00      
15 B1 3128 2993 96.97      
16 B1 3078 2945 6.08      
17 B1 1533 1467 13.27      
18 B1 1224 1171 0.37      
19 B1 756 723 4.62      
20 B1 273 261 0.00      
21 B2 3127 2992 28.18      
22 B2 3048 2916 36.95      
23 B2 1523 1457 1.98      
24 B2 1429 1367 5.48      
25 B2 1381 1321 2.80      
26 B2 1081 1035 0.40      
27 B2 938 898 3.07      

Unscaled Zero Point Vibrational Energy (zpe) 22896.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 21905.1 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 B3PW91/6-31G*
ABC
0.98378 0.28055 0.24858

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

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 -0.259
C3 0.000 -1.273 -0.259
H4 0.877 0.000 1.246
H5 -0.877 0.000 1.246
H6 0.000 2.172 0.367
H7 0.000 -2.172 0.367
H8 0.884 1.318 -0.907
H9 -0.884 1.318 -0.907
H10 -0.884 -1.318 -0.907
H11 0.884 -1.318 -0.907

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.52721.52721.09851.09852.18302.18302.17792.17792.17792.1779
C21.52722.54552.15762.15761.09603.50131.09701.09702.81262.8126
C31.52722.54552.15762.15763.50131.09602.81262.81261.09701.0970
H41.09852.15762.15761.75462.50202.50202.52393.07803.07802.5239
H51.09852.15762.15761.75462.50202.50203.07802.52392.52393.0780
H62.18301.09603.50132.50202.50204.34421.77071.77073.81883.8188
H72.18303.50131.09602.50202.50204.34423.81883.81881.77071.7707
H82.17791.09702.81262.52393.07801.77073.81881.76883.17372.6351
H92.17791.09702.81263.07802.52391.77073.81881.76882.63513.1737
H102.17792.81261.09703.07802.52393.81881.77073.17372.63511.7688
H112.17792.81261.09702.52393.07803.81881.77072.63513.17371.7688

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.588 C1 C2 H8 111.120
C1 C2 H9 111.120 C1 C3 H7 111.588
C1 C3 H10 111.120 C1 C3 H11 111.120
C2 C1 C3 112.889 C2 C1 H4 109.428
C2 C1 H5 109.428 C3 C1 H4 109.428
C3 C1 H5 109.428 H4 C1 H5 106.008
H6 C2 H8 107.689 H6 C2 H9 107.689
H7 C3 H10 107.689 H7 C3 H11 107.689
H8 C2 H9 107.444 H10 C3 H11 107.444
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.302      
2 C -0.502      
3 C -0.502      
4 H 0.160      
5 H 0.160      
6 H 0.165      
7 H 0.165      
8 H 0.164      
9 H 0.164      
10 H 0.164      
11 H 0.164      


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 0.055 0.055
CHELPG        
AIM        
ESP 0.003 0.000 0.020 0.020


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.063 0.000 0.000
y 0.000 -21.705 0.000
z 0.000 0.000 -21.402
Traceless
 xyz
x 0.491 0.000 0.000
y 0.000 -0.472 0.000
z 0.000 0.000 -0.019
Polar
3z2-r2-0.037
x2-y20.642
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.724 0.000 0.000
y 0.000 5.359 0.000
z 0.000 0.000 4.836


<r2> (average value of r2) Å2
<r2> 63.368
(<r2>)1/2 7.960