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: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-268.808862
Energy at 298.15K-268.818841
HF Energy-267.985347
Nuclear repulsion energy195.674053
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=FULL/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 3878 3624 24.93      
2 A 3830 3578 49.51      
3 A 3247 3034 15.16      
4 A 3236 3023 24.26      
5 A 3210 2999 21.46      
6 A 3137 2931 15.26      
7 A 3114 2910 38.56      
8 A 3031 2833 71.17      
9 A 1564 1461 2.19      
10 A 1554 1453 2.22      
11 A 1548 1446 3.25      
12 A 1497 1399 21.12      
13 A 1461 1365 23.98      
14 A 1433 1339 10.97      
15 A 1421 1328 23.57      
16 A 1389 1298 35.99      
17 A 1330 1243 55.42      
18 A 1262 1179 15.88      
19 A 1216 1136 13.77      
20 A 1127 1053 34.57      
21 A 1119 1045 6.84      
22 A 1080 1009 114.90      
23 A 977 913 2.99      
24 A 952 889 20.29      
25 A 881 823 13.25      
26 A 564 527 145.92      
27 A 531 496 37.11      
28 A 493 461 5.03      
29 A 371 347 25.63      
30 A 349 326 67.77      
31 A 258 242 3.47      
32 A 241 225 0.41      
33 A 163 152 3.78      

Unscaled Zero Point Vibrational Energy (zpe) 25730.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 24042.2 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 MP2=FULL/6-31G**
ABC
0.29049 0.12134 0.09397

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.420 1.371 -0.158
H2 0.518 1.608 -0.160
O3 1.935 -0.049 0.004
H4 2.132 -0.142 0.944
C5 0.705 -0.738 -0.237
H6 0.601 -0.781 -1.320
H7 0.731 -1.759 0.153
C8 -0.459 0.043 0.344
H9 -0.351 0.049 1.440
C10 -1.801 -0.550 -0.021
H11 -1.907 -0.581 -1.103
H12 -1.904 -1.559 0.376
H13 -2.600 0.066 0.383

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.96822.75483.16522.39182.65053.34971.42022.07482.37022.62973.32722.5967
H20.96822.18602.62412.35482.65673.38831.91312.39723.17173.40064.02313.5204
O32.75482.18600.96501.43032.01652.09622.42002.70083.76964.03344.14174.5514
H43.16522.62410.96501.94682.80692.28142.66682.53934.07104.55004.31564.7696
C52.39182.35481.43031.94681.08841.09331.51792.13232.52252.75612.80303.4570
H62.65052.65672.01652.80691.08841.77312.13873.03512.74122.52573.12413.7234
H73.34973.38832.09622.28141.09331.77312.16852.46892.81173.15072.65253.8053
C81.42021.91312.42002.66681.51792.13872.16851.10101.51202.14012.15732.1405
H92.07482.39722.70082.53932.13233.03512.46891.10102.14413.04732.47562.4848
C102.37023.17173.76964.07102.52252.74122.81171.51202.14411.08791.08871.0865
H112.62973.40064.03344.55002.75612.52573.15072.14013.04731.08791.77331.7627
H123.32724.02314.14174.31562.80303.12412.65252.15732.47561.08871.77331.7678
H132.59673.52044.55144.76963.45703.72343.80532.14052.48481.08651.76271.7678

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 108.943 O1 C8 H9 110.119
O1 C8 C10 107.825 H2 O1 C8 104.865
O3 C5 H6 105.578 O3 C5 H7 111.633
O3 C5 C8 110.298 H4 O3 C5 107.126
C5 C8 H9 107.957 C5 C8 C10 112.719
H6 C5 H7 108.720 H6 C5 C8 109.174
H7 C5 C8 111.243 C8 C10 H11 109.729
C8 C10 H12 111.050 C8 C10 H13 109.837
H9 C8 C10 109.273 H11 C10 H12 109.127
H11 C10 H13 108.325 H12 C10 H13 108.719
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability