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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-52.498967
Energy at 298.15K-52.508916
Nuclear repulsion energy113.180586
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 HF/CEP-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 4155 3731 41.31      
2 A 4135 3713 61.98      
3 A 3318 2980 89.30      
4 A 3306 2969 44.65      
5 A 3292 2957 56.27      
6 A 3235 2905 99.19      
7 A 3223 2894 13.44      
8 A 3177 2853 106.84      
9 A 1630 1463 2.02      
10 A 1626 1461 3.24      
11 A 1619 1454 7.68      
12 A 1593 1431 9.00      
13 A 1553 1395 36.44      
14 A 1511 1357 15.85      
15 A 1502 1348 30.88      
16 A 1468 1319 61.25      
17 A 1396 1253 77.94      
18 A 1327 1191 29.79      
19 A 1276 1145 19.91      
20 A 1190 1069 76.73      
21 A 1164 1045 16.45      
22 A 1148 1031 92.79      
23 A 1021 917 6.20      
24 A 995 893 19.40      
25 A 912 819 12.45      
26 A 556 499 29.53      
27 A 506 454 56.76      
28 A 469 421 159.33      
29 A 382 343 15.56      
30 A 311 279 90.96      
31 A 263 237 6.56      
32 A 239 214 0.52      
33 A 154 138 4.86      

Unscaled Zero Point Vibrational Energy (zpe) 26825.3 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 24089.1 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 HF/CEP-31G*
ABC
0.28479 0.11896 0.09207

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.480 1.386 -0.169
H2 0.402 1.742 -0.119
O3 1.957 -0.056 0.001
H4 2.213 -0.227 0.900
C5 0.723 -0.707 -0.269
H6 0.625 -0.730 -1.352
H7 0.740 -1.735 0.102
C8 -0.454 0.067 0.339
H9 -0.327 0.096 1.428
C10 -1.797 -0.585 0.003
H11 -1.937 -0.630 -1.078
H12 -1.852 -1.598 0.409
H13 -2.612 0.002 0.427

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.95212.83593.31592.41612.66483.36201.41392.05852.37752.64823.33492.6110
H20.95212.37922.86232.47412.77173.50021.93602.37333.20433.46614.06343.5225
O32.83592.37920.95041.42092.01462.07672.43752.69743.79124.08064.12894.5884
H43.31592.86230.95041.95342.80102.25432.74152.61484.12504.61464.31764.8531
C52.41612.47411.42091.95341.08811.09311.53412.15102.53802.78122.80733.4794
H62.66482.77172.01462.80101.08811.77112.15873.05282.78012.57873.16053.7658
H73.36203.50022.07672.25431.09311.77112.17462.50022.78743.12692.61293.7887
C81.41391.93602.43752.74151.53412.15872.17461.09701.53022.16552.17462.1601
H92.05852.37332.69742.61482.15103.05282.50021.09702.15743.06522.49642.4954
C102.37753.20433.79124.12502.53802.78012.78741.53022.15741.09121.09231.0896
H112.64823.46614.08064.61462.78122.57873.12692.16553.06521.09121.77621.7664
H123.33494.06344.12894.31762.80733.16052.61292.17462.49641.09231.77621.7713
H132.61103.52254.58844.85313.47943.76583.78872.16012.49541.08961.76641.7713

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 110.017 O1 C8 H9 109.484
O1 C8 C10 107.653 H2 O1 C8 108.240
O3 C5 H6 106.066 O3 C5 H7 110.715
O3 C5 C8 111.092 H4 O3 C5 109.327
C5 C8 H9 108.531 C5 C8 C10 111.840
H6 C5 H7 108.578 H6 C5 C8 109.645
H7 C5 C8 110.610 C8 C10 H11 110.274
C8 C10 H12 110.934 C8 C10 H13 109.944
H9 C8 C10 109.292 H11 C10 H12 108.876
H11 C10 H13 108.193 H12 C10 H13 108.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.620      
2 H 0.436      
3 O -0.590      
4 H 0.416      
5 C -0.118      
6 H 0.130      
7 H 0.097      
8 C 0.171      
9 H 0.076      
10 C -0.347      
11 H 0.109      
12 H 0.092      
13 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.509 -1.986 1.845 2.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.057 2.051 3.196
y 2.051 -32.051 0.180
z 3.196 0.180 -29.504
Traceless
 xyz
x -3.279 2.051 3.196
y 2.051 -0.271 0.180
z 3.196 0.180 3.550
Polar
3z2-r27.101
x2-y2-2.005
xy2.051
xz3.196
yz0.180


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.025 0.312 0.174
y 0.312 5.338 -0.081
z 0.174 -0.081 5.041


<r2> (average value of r2) Å2
<r2> 111.854
(<r2>)1/2 10.576