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 C3H8O2 (Propylene glycol)

using model chemistry: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-269.249810
Energy at 298.15K-269.259606
Nuclear repulsion energy194.287771
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 PBEPBE/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 A 3688 3638 10.41      
2 A 3598 3548 44.88      
3 A 3081 3038 16.47      
4 A 3072 3029 26.31      
5 A 3036 2994 25.13      
6 A 2990 2949 17.37      
7 A 2946 2906 50.89      
8 A 2829 2790 88.31      
9 A 1467 1447 1.49      
10 A 1453 1433 3.69      
11 A 1449 1429 6.44      
12 A 1412 1392 41.02      
13 A 1373 1354 45.53      
14 A 1357 1338 7.40      
15 A 1341 1323 5.65      
16 A 1318 1300 49.89      
17 A 1267 1249 30.18      
18 A 1191 1175 14.43      
19 A 1147 1131 25.02      
20 A 1064 1050 22.22      
21 A 1061 1047 10.55      
22 A 1020 1006 110.08      
23 A 916 904 5.16      
24 A 899 886 15.33      
25 A 832 820 11.89      
26 A 582 574 140.79      
27 A 517 510 5.98      
28 A 471 465 8.91      
29 A 366 361 74.16      
30 A 350 345 7.57      
31 A 247 244 2.58      
32 A 222 219 0.23      
33 A 157 155 4.34      

Unscaled Zero Point Vibrational Energy (zpe) 24358.1 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 24024.4 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 PBEPBE/6-31G**
ABC
0.28706 0.11993 0.09280

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.391 1.382 -0.156
H2 0.573 1.561 -0.188
O3 1.941 -0.058 -0.010
H4 2.122 -0.089 0.949
C5 0.704 -0.761 -0.217
H6 0.598 -0.849 -1.311
H7 0.732 -1.781 0.215
C8 -0.469 0.051 0.346
H9 -0.376 0.051 1.461
C10 -1.825 -0.533 -0.031
H11 -1.929 -0.577 -1.128
H12 -1.949 -1.549 0.380
H13 -2.633 0.101 0.363

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.98152.74473.11462.40712.69963.37671.42392.09412.39542.67333.36152.6337
H20.98152.12672.53242.32552.65913.37001.91052.42843.18763.42314.04373.5660
O32.74472.12670.97611.43762.03132.11752.43892.74613.79584.06194.18394.5923
H43.11462.53240.97611.95442.83032.30962.66412.55324.09074.57844.36144.7950
C52.40712.32551.43761.95441.10331.10841.53412.15402.54602.79262.83123.4955
H62.69962.65912.03132.83031.10331.79372.16683.07282.75792.54793.13603.7608
H73.37673.37002.11752.30961.10841.79372.19492.47682.85523.21432.69533.8584
C81.42391.91052.43892.66411.53412.16682.19491.11891.52362.16742.17942.1647
H92.09412.42842.74612.55322.15403.07282.47681.11892.16053.08352.49012.5111
C102.39543.18763.79584.09072.54602.75792.85521.52362.16051.10221.10251.1007
H112.67333.42314.06194.57842.79262.54793.21432.16743.08351.10221.79371.7824
H123.36154.04374.18394.36142.83123.13602.69532.17942.49011.10251.79371.7862
H132.63373.56604.59234.79503.49553.76083.85842.16472.51111.10071.78241.7862

picture of Propylene glycol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C8 C5 108.865 O1 C8 H9 110.307
O1 C8 C10 108.668 H2 O1 C8 103.635
O3 C5 H6 105.389 O3 C5 H7 111.892
O3 C5 C8 110.265 H4 O3 C5 106.565
C5 C8 H9 107.534 C5 C8 C10 112.742
H6 C5 H7 108.387 H6 C5 C8 109.397
H7 C5 C8 111.300 C8 C10 H11 110.229
C8 C10 H12 111.167 C8 C10 H13 110.106
H9 C8 C10 108.719 H11 C10 H12 108.901
H11 C10 H13 108.018 H12 C10 H13 108.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.512      
2 H 0.302      
3 O -0.508      
4 H 0.307      
5 C -0.022      
6 H 0.133      
7 H 0.101      
8 C 0.108      
9 H 0.074      
10 C -0.364      
11 H 0.129      
12 H 0.114      
13 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.536 -1.576 1.436 2.199
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.211 2.083 2.846
y 2.083 -32.461 0.195
z 2.846 0.195 -29.638
Traceless
 xyz
x -1.161 2.083 2.846
y 2.083 -1.537 0.195
z 2.846 0.195 2.698
Polar
3z2-r25.396
x2-y20.250
xy2.083
xz2.846
yz0.195


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.896 0.220 0.172
y 0.220 6.147 -0.110
z 0.172 -0.110 5.797


<r2> (average value of r2) Å2
<r2> 132.758
(<r2>)1/2 11.522