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: CID/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 CID/3-21G
 hartrees
Energy at 0K-117.901121
Energy at 298.15K-117.909606
HF Energy-117.612721
Nuclear repulsion energy81.999669
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 CID/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 3163 2946 45.79      
2 A1 3104 2892 8.87      
3 A1 3097 2885 22.21      
4 A1 1618 1507 5.29      
5 A1 1601 1491 0.37      
6 A1 1516 1413 4.50      
7 A1 1241 1156 2.05      
8 A1 872 812 0.85      
9 A1 387 360 0.21      
10 A2 3154 2938 0.00      
11 A2 1601 1492 0.00      
12 A2 1395 1300 0.00      
13 A2 980 913 0.00      
14 A2 233 217 0.00      
15 B1 3169 2952 83.80      
16 B1 3128 2914 0.55      
17 B1 1617 1506 13.14      
18 B1 1294 1206 0.48      
19 B1 790 736 4.64      
20 B1 281 262 0.00      
21 B2 3159 2943 24.61      
22 B2 3092 2881 26.55      
23 B2 1607 1497 2.64      
24 B2 1499 1396 4.86      
25 B2 1444 1345 1.74      
26 B2 1063 991 1.99      
27 B2 985 918 2.69      

Unscaled Zero Point Vibrational Energy (zpe) 23544.6 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 21934.2 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 CID/3-21G
ABC
0.96125 0.27825 0.24557

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.603
C2 0.000 1.281 -0.267
C3 0.000 -1.281 -0.267
H4 0.882 0.000 1.252
H5 -0.882 0.000 1.252
H6 0.000 2.181 0.356
H7 0.000 -2.181 0.356
H8 0.887 1.305 -0.908
H9 -0.887 1.305 -0.908
H10 -0.887 -1.305 -0.908
H11 0.887 -1.305 -0.908

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.54841.54841.09511.09512.19452.19452.18432.18432.18432.1843
C21.54842.56252.17382.17381.09403.51751.09451.09452.80822.8082
C31.54842.56252.17382.17383.51751.09402.80822.80821.09451.0945
H41.09512.17382.17381.76362.51702.51702.52353.08153.08152.5235
H51.09512.17382.17381.76362.51702.51703.08152.52352.52353.0815
H62.19451.09403.51752.51702.51704.36131.77521.77523.81233.8123
H72.19453.51751.09402.51702.51704.36133.81233.81231.77521.7752
H82.18431.09452.80822.52353.08151.77523.81231.77353.15542.6098
H92.18431.09452.80823.08152.52351.77523.81231.77352.60983.1554
H102.18432.80821.09453.08152.52353.81231.77523.15542.60981.7735
H112.18432.80821.09452.52353.08153.81231.77522.60983.15541.7735

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.137 C1 C2 H8 110.293
C1 C2 H9 110.293 C1 C3 H7 111.137
C1 C3 H10 110.293 C1 C3 H11 110.293
C2 C1 C3 111.684 C2 C1 H4 109.447
C2 C1 H5 109.447 C3 C1 H4 109.447
C3 C1 H5 109.447 H4 C1 H5 107.264
H6 C2 H8 108.408 H6 C2 H9 108.408
H7 C3 H10 108.408 H7 C3 H11 108.408
H8 C2 H9 108.218 H10 C3 H11 108.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability