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: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-118.714195
Energy at 298.15K-118.722612
HF Energy-118.262789
Nuclear repulsion energy82.301241
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 MP4/6-31G*
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 3135 2993        
2 A1 3051 2913        
3 A1 3050 2912        
4 A1 1560 1489        
5 A1 1539 1469        
6 A1 1466 1399        
7 A1 1208 1153        
8 A1 900 860        
9 A1 375 358        
10 A2 3124 2983        
11 A2 1537 1467        
12 A2 1344 1284        
13 A2 929 887        
14 A2 232 221        
15 B1 3133 2991        
16 B1 3085 2946        
17 B1 1554 1484        
18 B1 1253 1196        
19 B1 763 728        
20 B1 285 272        
21 B2 3133 2991        
22 B2 3049 2911        
23 B2 1544 1474        
24 B2 1454 1388        
25 B2 1403 1339        
26 B2 1095 1046        
27 B2 949 906        

Unscaled Zero Point Vibrational Energy (zpe) 23073.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 22030.2 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 MP4/6-31G*
ABC
0.97555 0.28067 0.24837

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.590
C2 0.000 1.273 -0.261
C3 0.000 -1.273 -0.261
H4 0.880 0.000 1.250
H5 -0.880 0.000 1.250
H6 0.000 2.175 0.365
H7 0.000 -2.175 0.365
H8 0.887 1.310 -0.908
H9 -0.887 1.310 -0.908
H10 -0.887 -1.310 -0.908
H11 0.887 -1.310 -0.908

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.53081.53081.10041.10042.18662.18662.17882.17882.17882.1788
C21.53082.54542.16272.16271.09803.50401.09891.09892.80652.8065
C31.53082.54542.16272.16273.50401.09802.80652.80651.09891.0989
H41.10042.16272.16271.76082.50792.50792.52463.08193.08192.5246
H51.10042.16272.16271.76082.50792.50793.08192.52462.52463.0819
H62.18661.09803.50402.50792.50794.35001.77641.77643.81483.8148
H72.18663.50401.09802.50792.50794.35003.81483.81481.77641.7764
H82.17881.09892.80652.52463.08191.77643.81481.77453.16442.6201
H92.17881.09892.80653.08192.52461.77643.81481.77452.62013.1644
H102.17882.80651.09893.08192.52463.81481.77643.16442.62011.7745
H112.17882.80651.09892.52463.08193.81481.77642.62013.16441.7745

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.510 C1 C2 H8 110.827
C1 C2 H9 110.827 C1 C3 H7 111.510
C1 C3 H10 110.827 C1 C3 H11 110.827
C2 C1 C3 112.488 C2 C1 H4 109.473
C2 C1 H5 109.473 C3 C1 H4 109.473
C3 C1 H5 109.473 H4 C1 H5 106.267
H6 C2 H8 107.920 H6 C2 H9 107.920
H7 C3 H10 107.920 H7 C3 H11 107.920
H8 C2 H9 107.684 H10 C3 H11 107.684
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability