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All results from a given calculation for C3H8 (Propane)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-21.069766
Energy at 298.15K-21.078285
HF Energy-21.069766
Nuclear repulsion energy49.538392
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/CEP-31G
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 3276 2953 158.76      
2 A1 3212 2895 13.00      
3 A1 3192 2878 78.39      
4 A1 1647 1485 6.65      
5 A1 1632 1471 0.40      
6 A1 1564 1410 4.62      
7 A1 1287 1160 2.65      
8 A1 931 839 0.85      
9 A1 391 353 0.12      
10 A2 3266 2944 0.00      
11 A2 1627 1466 0.00      
12 A2 1422 1282 0.00      
13 A2 991 893 0.00      
14 A2 226 204 0.00      
15 B1 3286 2962 282.17      
16 B1 3238 2919 1.70      
17 B1 1641 1479 15.72      
18 B1 1326 1195 0.48      
19 B1 812 732 3.96      
20 B1 279 252 0.00      
21 B2 3269 2946 65.03      
22 B2 3192 2877 84.38      
23 B2 1631 1471 1.91      
24 B2 1551 1398 5.86      
25 B2 1501 1353 1.77      
26 B2 1144 1031 1.26      
27 B2 1017 917 2.38      

Unscaled Zero Point Vibrational Energy (zpe) 24274.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 21880.8 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/CEP-31G
ABC
0.97144 0.27698 0.24483

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.597
C2 0.000 1.284 -0.264
C3 0.000 -1.284 -0.264
H4 0.876 0.000 1.250
H5 -0.876 0.000 1.250
H6 0.000 2.180 0.358
H7 0.000 -2.180 0.358
H8 0.882 1.322 -0.907
H9 -0.882 1.322 -0.907
H10 -0.882 -1.322 -0.907
H11 0.882 -1.322 -0.907

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.54601.54601.09201.09202.19312.19312.18812.18812.18812.1881
C21.54602.56772.16942.16941.09123.51941.09211.09212.82502.8250
C31.54602.56772.16942.16943.51941.09122.82502.82501.09211.0921
H41.09202.16942.16941.75132.51272.51272.52953.08023.08022.5295
H51.09202.16942.16941.75132.51272.51273.08022.52952.52953.0802
H62.19311.09123.51942.51272.51274.36011.76521.76523.82653.8265
H72.19313.51941.09122.51272.51274.36013.82653.82651.76521.7652
H82.18811.09212.82502.52953.08021.76523.82651.76403.17812.6436
H92.18811.09212.82503.08022.52951.76523.82651.76402.64363.1781
H102.18812.82501.09213.08022.52953.82651.76523.17812.64361.7640
H112.18812.82501.09212.52953.08023.82651.76522.64363.17811.7640

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.361 C1 C2 H8 110.905
C1 C2 H9 110.905 C1 C3 H7 111.361
C1 C3 H10 110.905 C1 C3 H11 110.905
C2 C1 C3 112.291 C2 C1 H4 109.442
C2 C1 H5 109.442 C3 C1 H4 109.442
C3 C1 H5 109.442 H4 C1 H5 106.619
H6 C2 H8 107.898 H6 C2 H9 107.898
H7 C3 H10 107.898 H7 C3 H11 107.898
H8 C2 H9 107.721 H10 C3 H11 107.721
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.050      
2 C -0.347      
3 C -0.347      
4 H 0.071      
5 H 0.071      
6 H 0.120      
7 H 0.120      
8 H 0.091      
9 H 0.091      
10 H 0.091      
11 H 0.091      


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 0.053 0.053
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.287 0.000 0.000
y 0.000 -22.356 0.000
z 0.000 0.000 -21.852
Traceless
 xyz
x 0.817 0.000 0.000
y 0.000 -0.787 0.000
z 0.000 0.000 -0.030
Polar
3z2-r2-0.060
x2-y21.069
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.292 0.000 0.000
y 0.000 5.040 0.000
z 0.000 0.000 4.452


<r2> (average value of r2) Å2
<r2> 56.616
(<r2>)1/2 7.524