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All results from a given calculation for C3H8O2 (Propylene glycol)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-266.993227
Energy at 298.15K-267.003221
HF Energy-266.478562
Nuclear repulsion energy192.864284
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3497 3327 3.18      
2 A 3451 3283 27.67      
3 A 3183 3028 28.37      
4 A 3179 3024 16.56      
5 A 3170 3016 11.26      
6 A 3094 2944 20.74      
7 A 3089 2939 23.38      
8 A 3009 2862 62.33      
9 A 1604 1526 5.88      
10 A 1590 1513 3.46      
11 A 1585 1508 1.73      
12 A 1498 1425 42.11      
13 A 1490 1418 16.33      
14 A 1431 1361 5.25      
15 A 1421 1352 16.35      
16 A 1408 1339 49.49      
17 A 1362 1296 34.90      
18 A 1262 1201 15.34      
19 A 1188 1130 0.74      
20 A 1124 1069 17.76      
21 A 1069 1017 36.56      
22 A 1002 953 43.29      
23 A 970 923 19.55      
24 A 927 882 19.51      
25 A 848 806 11.76      
26 A 655 623 176.88      
27 A 519 494 11.98      
28 A 472 449 22.55      
29 A 381 362 91.54      
30 A 362 345 10.07      
31 A 267 254 2.99      
32 A 231 220 0.39      
33 A 161 153 4.29      

Unscaled Zero Point Vibrational Energy (zpe) 25249.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 24019.5 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 MP2/3-21G*
ABC
0.28406 0.11904 0.09217

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.342 1.389 -0.151
H2 0.647 1.516 -0.203
O3 1.941 -0.049 -0.020
H4 2.182 -0.136 0.941
C5 0.675 -0.804 -0.217
H6 0.553 -0.861 -1.300
H7 0.720 -1.813 0.208
C8 -0.476 0.025 0.376
H9 -0.387 0.013 1.475
C10 -1.855 -0.491 -0.043
H11 -1.920 -0.480 -1.135
H12 -2.022 -1.508 0.327
H13 -2.627 0.170 0.357

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.99842.70163.14482.41832.68033.39301.46862.13012.41532.63633.38312.6389
H20.99842.03882.52872.31982.61903.35521.95442.47813.21083.38194.06803.5835
O32.70162.03880.99431.48752.05542.15812.45072.76733.82154.04184.23794.5891
H43.14482.52870.99432.01432.86342.34242.72222.62784.16964.60984.46474.8540
C52.41832.31981.48752.01431.09121.09631.53722.15842.55462.77122.84023.4904
H62.68032.61902.05542.86341.09121.79162.15673.05752.74102.50743.11433.7315
H73.39303.35522.15812.34241.09631.79162.19932.48342.90493.24802.76163.8937
C81.46861.95442.45072.72221.53722.15672.19931.10301.53002.14952.17772.1559
H92.13012.47812.76732.62782.15843.05752.48341.10302.17113.06692.51182.5087
C102.41533.21083.82154.16962.55462.74102.90491.53002.17111.09401.09521.0932
H112.63633.38194.04184.60982.77122.50743.24802.14953.06691.09401.79031.7749
H123.38314.06804.23794.46472.84023.11432.76162.17772.51181.09521.79031.7847
H132.63893.58354.58914.85403.49043.73153.89372.15592.50871.09321.77491.7847

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 107.110 O1 C8 H9 111.051
O1 C8 C10 107.293 H2 O1 C8 103.120
O3 C5 H6 104.649 O3 C5 H7 112.402
O3 C5 C8 108.225 H4 O3 C5 106.818
C5 C8 H9 108.551 C5 C8 C10 112.789
H6 C5 H7 109.973 H6 C5 C8 109.098
H7 C5 C8 112.179 C8 C10 H11 108.870
C8 C10 H12 111.015 C8 C10 H13 109.419
H9 C8 C10 110.028 H11 C10 H12 109.727
H11 C10 H13 108.486 H12 C10 H13 109.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability