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

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-267.956218
Energy at 298.15K-267.966197
Nuclear repulsion energy194.924064
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 B1B95/3-21G*
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 3516 3357 3.32      
2 A 3384 3231 49.34      
3 A 3165 3022 20.73      
4 A 3159 3017 30.39      
5 A 3154 3012 4.72      
6 A 3077 2938 22.48      
7 A 3072 2933 25.16      
8 A 2966 2832 71.15      
9 A 1562 1492 5.90      
10 A 1542 1473 5.87      
11 A 1537 1468 8.92      
12 A 1478 1411 76.06      
13 A 1452 1386 17.46      
14 A 1398 1335 16.57      
15 A 1388 1326 26.95      
16 A 1379 1317 29.67      
17 A 1335 1275 19.07      
18 A 1236 1180 16.45      
19 A 1171 1118 5.34      
20 A 1105 1055 16.94      
21 A 1071 1023 39.02      
22 A 1014 969 62.31      
23 A 955 912 10.64      
24 A 924 882 19.40      
25 A 856 818 11.65      
26 A 705 673 160.99      
27 A 523 500 14.23      
28 A 464 444 21.50      
29 A 378 361 93.36      
30 A 362 345 9.55      
31 A 272 259 1.38      
32 A 220 210 0.32      
33 A 158 151 5.27      

Unscaled Zero Point Vibrational Energy (zpe) 24987.2 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 23860.3 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 B1B95/3-21G*
ABC
0.29098 0.12229 0.09473

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.295 1.370 -0.147
H2 0.701 1.438 -0.225
O3 1.904 -0.057 -0.035
H4 2.160 -0.105 0.923
C5 0.655 -0.814 -0.194
H6 0.520 -0.904 -1.272
H7 0.706 -1.809 0.260
C8 -0.478 0.035 0.380
H9 -0.406 0.021 1.482
C10 -1.845 -0.459 -0.055
H11 -1.893 -0.457 -1.147
H12 -2.040 -1.468 0.320
H13 -2.615 0.217 0.322

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O11.00162.62383.05722.38212.66463.35771.44652.11732.39902.62433.36362.6326
H21.00161.92822.41382.25302.57173.28341.92972.47893.17983.34164.03153.5759
O32.62381.92820.99251.46952.04052.14332.41952.76433.77073.97634.20374.5416
H43.05722.41380.99252.00392.85412.33652.69672.62904.13804.56414.45644.8237
C52.38212.25301.46952.00391.09051.09481.52772.15162.52882.74332.81993.4673
H62.66462.57172.04052.85411.09051.78942.14673.04902.69682.45693.06703.6914
H73.35773.28342.14332.33651.09481.78942.19492.46552.90343.24992.76743.8909
C81.44651.92972.41952.69671.52772.14672.19491.10381.51772.13922.16852.1460
H92.11732.47892.76432.62902.15163.04902.46551.10382.15963.05752.49722.5031
C102.39903.17983.77074.13802.52882.69682.90341.51772.15961.09291.09371.0919
H112.62433.34163.97634.56412.74332.45693.24992.13923.05751.09291.78811.7700
H123.36364.03154.20374.45642.81993.06702.76742.16852.49721.09371.78811.7804
H132.63263.57594.54164.82373.46733.69143.89092.14602.50311.09191.77001.7804

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 106.408 O1 C8 H9 111.540
O1 C8 C10 108.037 H2 O1 C8 102.524
O3 C5 H6 104.727 O3 C5 H7 112.582
O3 C5 C8 107.643 H4 O3 C5 107.376
C5 C8 H9 108.632 C5 C8 C10 112.272
H6 C5 H7 109.935 H6 C5 C8 109.006
H7 C5 C8 112.596 C8 C10 H11 108.962
C8 C10 H12 111.239 C8 C10 H13 109.554
H9 C8 C10 109.931 H11 C10 H12 109.719
H11 C10 H13 108.217 H12 C10 H13 109.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.576      
2 H 0.349      
3 O -0.549      
4 H 0.354      
5 C -0.213      
6 H 0.245      
7 H 0.198      
8 C -0.037      
9 H 0.180      
10 C -0.596      
11 H 0.218      
12 H 0.193      
13 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.676 -2.190 1.628 2.811
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.576 1.847 3.283
y 1.847 -32.951 0.137
z 3.283 0.137 -29.335
Traceless
 xyz
x -0.433 1.847 3.283
y 1.847 -2.495 0.137
z 3.283 0.137 2.929
Polar
3z2-r25.857
x2-y21.375
xy1.847
xz3.283
yz0.137


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.076 0.268 0.203
y 0.268 5.357 -0.183
z 0.203 -0.183 5.109


<r2> (average value of r2) Å2
<r2> 130.747
(<r2>)1/2 11.434