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: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-119.059962
Energy at 298.15K-119.068233
HF Energy-119.059962
Nuclear repulsion energy81.749057
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 BLYP/6-31G(2df,p)
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 3021 3005 54.48 85.00 0.59 0.74
2 A1 2955 2939 25.61 176.34 0.00 0.00
3 A1 2943 2927 23.12 137.67 0.11 0.20
4 A1 1478 1470 1.64 7.66 0.73 0.84
5 A1 1452 1444 0.02 34.53 0.75 0.86
6 A1 1385 1377 0.51 2.91 0.56 0.72
7 A1 1144 1138 0.91 2.77 0.45 0.62
8 A1 845 841 0.57 10.15 0.25 0.39
9 A1 354 352 0.13 0.26 0.19 0.32
10 A2 3009 2992 0.00 8.36 0.75 0.86
11 A2 1454 1446 0.00 33.13 0.75 0.86
12 A2 1283 1276 0.00 10.31 0.75 0.86
13 A2 887 882 0.00 0.01 0.75 0.86
14 A2 218 217 0.00 0.00 0.75 0.86
15 B1 3019 3003 99.10 36.44 0.75 0.86
16 B1 2965 2949 6.97 137.47 0.75 0.86
17 B1 1472 1464 7.32 0.05 0.75 0.86
18 B1 1183 1177 0.16 0.93 0.75 0.86
19 B1 733 729 2.93 0.10 0.75 0.86
20 B1 263 262 0.00 0.00 0.75 0.86
21 B2 3018 3002 29.84 55.99 0.75 0.86
22 B2 2951 2935 36.03 0.86 0.75 0.86
23 B2 1462 1454 0.95 0.63 0.75 0.86
24 B2 1363 1356 0.39 4.93 0.75 0.86
25 B2 1329 1322 8.92 0.88 0.75 0.86
26 B2 1025 1019 0.70 5.27 0.75 0.86
27 B2 905 900 1.19 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 22059.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 21937.9 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 BLYP/6-31G(2df,p)
ABC
0.97077 0.27504 0.24377

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.590
C2 0.000 1.286 -0.261
C3 0.000 -1.286 -0.261
H4 0.882 0.000 1.255
H5 -0.882 0.000 1.255
H6 0.000 2.190 0.369
H7 0.000 -2.190 0.369
H8 0.889 1.333 -0.913
H9 -0.889 1.333 -0.913
H10 -0.889 -1.333 -0.913
H11 0.889 -1.333 -0.913

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.54241.54241.10441.10442.20062.20062.19632.19632.19632.1963
C21.54242.57272.17492.17491.10163.53271.10281.10282.84172.8417
C31.54242.57272.17492.17493.53271.10162.84172.84171.10281.1028
H41.10442.17492.17491.76352.52102.52102.54443.09983.09982.5444
H51.10442.17492.17491.76352.52102.52103.09982.54442.54443.0998
H62.20061.10163.53272.52102.52104.37911.77961.77963.85253.8525
H72.20063.53271.10162.52102.52104.37913.85253.85251.77961.7796
H82.19631.10282.84172.54443.09981.77963.85251.77753.20422.6660
H92.19631.10282.84173.09982.54441.77963.85251.77752.66603.2042
H102.19632.84171.10283.09982.54443.85251.77963.20422.66601.7775
H112.19632.84171.10282.54443.09983.85251.77962.66603.20421.7775

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.587 C1 C2 H8 111.172
C1 C2 H9 111.172 C1 C3 H7 111.587
C1 C3 H10 111.172 C1 C3 H11 111.172
C2 C1 C3 113.025 C2 C1 H4 109.403
C2 C1 H5 109.403 C3 C1 H4 109.403
C3 C1 H5 109.403 H4 C1 H5 105.960
H6 C2 H8 107.664 H6 C2 H9 107.664
H7 C3 H10 107.664 H7 C3 H11 107.664
H8 C2 H9 107.385 H10 C3 H11 107.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.103      
2 C -0.316      
3 C -0.316      
4 H 0.079      
5 H 0.079      
6 H 0.094      
7 H 0.094      
8 H 0.098      
9 H 0.098      
10 H 0.098      
11 H 0.098      


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 0.060 0.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.287 0.000 0.000
y 0.000 -21.975 0.000
z 0.000 0.000 -21.631
Traceless
 xyz
x 0.515 0.000 0.000
y 0.000 -0.516 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.687
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.933 0.000 0.000
y 0.000 5.795 0.000
z 0.000 0.000 5.110


<r2> (average value of r2) Å2
<r2> 64.436
(<r2>)1/2 8.027