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All results from a given calculation for C3H8 (Propane)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-118.854721
Energy at 298.15K-118.849204
HF Energy-118.262653
Nuclear repulsion energy82.591569
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 CBS-Q
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 3252 3252 79.35      
2 A1 3187 3187 1.67      
3 A1 3180 3180 55.40      
4 A1 1649 1649 2.31      
5 A1 1626 1626 0.13      
6 A1 1557 1557 1.73      
7 A1 1277 1277 0.95      
8 A1 927 927 0.52      
9 A1 390 390 0.04      
10 A2 3239 3239 0.00      
11 A2 1625 1625 0.00      
12 A2 1428 1428 0.00      
13 A2 977 977 0.00      
14 A2 235 235 0.00      
15 B1 3254 3254 144.45      
16 B1 3208 3208 4.12      
17 B1 1643 1643 9.38      
18 B1 1321 1321 0.03      
19 B1 801 801 2.04      
20 B1 293 293 0.00      
21 B2 3248 3248 41.60      
22 B2 3177 3177 44.69      
23 B2 1633 1633 0.90      
24 B2 1550 1550 3.42      
25 B2 1490 1490 3.07      
26 B2 1123 1123 0.43      
27 B2 1005 1005 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 24148.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24148.1 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 CBS-Q
ABC
0.97387 0.28112 0.24854

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.586
C2 0.000 1.274 -0.260
C3 0.000 -1.274 -0.260
H4 0.872 0.000 1.240
H5 -0.872 0.000 1.240
H6 0.000 2.165 0.365
H7 0.000 -2.165 0.365
H8 0.879 1.320 -0.902
H9 -0.879 1.320 -0.902
H10 -0.879 -1.320 -0.902
H11 0.879 -1.320 -0.902

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.52981.52981.08981.08982.17682.17682.17442.17442.17442.1744
C21.52982.54892.15292.15291.08843.49631.08921.08922.81312.8131
C31.52982.54892.15292.15293.49631.08842.81312.81311.08921.0892
H41.08982.15292.15291.74342.49302.49302.51613.06513.06512.5161
H51.08982.15292.15291.74342.49302.49303.06512.51612.51613.0651
H62.17681.08843.49632.49302.49304.33101.75871.75873.81103.8110
H72.17683.49631.08842.49302.49304.33103.81103.81101.75871.7587
H82.17441.08922.81312.51613.06511.75873.81101.75763.17102.6393
H92.17441.08922.81313.06512.51611.75873.81101.75762.63933.1710
H102.17442.81311.08923.06512.51613.81101.75873.17102.63931.7576
H112.17442.81311.08922.51613.06513.81101.75872.63933.17101.7576

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.370 C1 C2 H8 111.133
C1 C2 H9 111.133 C1 C3 H7 111.370
C1 C3 H10 111.133 C1 C3 H11 111.133
C2 C1 C3 112.837 C2 C1 H4 109.390
C2 C1 H5 109.390 C3 C1 H4 109.390
C3 C1 H5 109.390 H4 C1 H5 106.230
H6 C2 H8 107.727 H6 C2 H9 107.727
H7 C3 H10 107.727 H7 C3 H11 107.727
H8 C2 H9 107.573 H10 C3 H11 107.573
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability