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/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-52.908911
Energy at 298.15K-52.918494
HF Energy-52.393478
Nuclear repulsion energy110.389965
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/CEP-121G
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 3628 3541 15.19      
2 A 3590 3504 22.94      
3 A 3114 3040 34.88      
4 A 3102 3027 24.85      
5 A 3080 3006 31.49      
6 A 2999 2927 50.92      
7 A 2976 2904 16.16      
8 A 2957 2886 67.06      
9 A 1527 1490 6.35      
10 A 1515 1479 6.10      
11 A 1507 1471 1.24      
12 A 1450 1415 12.85      
13 A 1441 1406 12.29      
14 A 1382 1349 26.36      
15 A 1379 1346 4.14      
16 A 1336 1304 22.08      
17 A 1271 1240 43.02      
18 A 1219 1190 12.18      
19 A 1151 1124 0.67      
20 A 1075 1049 29.60      
21 A 1062 1036 42.19      
22 A 980 956 76.73      
23 A 944 921 10.10      
24 A 897 876 33.98      
25 A 818 798 21.32      
26 A 507 495 158.02      
27 A 490 478 84.26      
28 A 454 443 5.32      
29 A 349 340 10.35      
30 A 267 260 110.39      
31 A 236 230 13.00      
32 A 204 199 0.63      
33 A 135 132 6.35      

Unscaled Zero Point Vibrational Energy (zpe) 24520.1 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 23931.6 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/CEP-121G
ABC
0.27253 0.11343 0.08792

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.474 1.414 -0.157
H2 0.455 1.748 -0.148
O3 2.008 -0.032 0.024
H4 2.308 -0.243 0.938
C5 0.722 -0.744 -0.277
H6 0.649 -0.708 -1.372
H7 0.769 -1.790 0.074
C8 -0.471 0.015 0.359
H9 -0.339 0.039 1.460
C10 -1.845 -0.589 -0.012
H11 -1.954 -0.619 -1.108
H12 -1.944 -1.612 0.393
H13 -2.648 0.038 0.404

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.98702.87833.41832.47032.69103.44511.49162.12732.43172.68853.40862.6331
H20.98702.36852.92872.50912.75053.55902.02932.47743.28133.51074.16313.5852
O32.87832.36850.98431.49992.06172.15112.50182.75213.89254.16224.27134.6711
H43.41832.92870.98432.05902.88082.34652.85032.71254.27364.74254.49944.9918
C52.47032.50911.49992.05901.09791.10491.55032.18082.58502.80532.88243.5253
H62.69102.75052.06172.88081.09791.81012.18483.09122.84322.61853.26413.8182
H73.44513.55902.15112.34651.10491.81012.20862.54872.87793.19192.73743.8890
C81.49162.02932.50182.85031.55032.18482.20861.10961.54552.18022.19432.1769
H92.12732.47742.75212.71252.18083.09122.54871.10962.19753.10472.53772.5387
C102.43173.28133.89254.27362.58502.84322.87791.54552.19751.10221.10421.1002
H112.68853.51074.16224.74252.80532.61853.19192.18023.10471.10221.79971.7883
H123.40864.16314.27134.49942.88243.26412.73742.19432.53771.10421.79971.7933
H132.63313.58524.67114.99183.52533.81823.88902.17692.53871.10021.78831.7933

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 108.585 O1 C8 H9 108.850
O1 C8 C10 106.371 H2 O1 C8 108.190
O3 C5 H6 103.974 O3 C5 H7 110.428
O3 C5 C8 110.201 H4 O3 C5 110.234
C5 C8 H9 109.027 C5 C8 C10 113.233
H6 C5 H7 110.515 H6 C5 C8 110.003
H7 C5 C8 111.472 C8 C10 H11 109.726
C8 C10 H12 110.714 C8 C10 H13 109.584
H9 C8 C10 110.648 H11 C10 H12 109.315
H11 C10 H13 108.584 H12 C10 H13 108.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability