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: HF/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 HF/6-31G**
 hartrees
Energy at 0K-267.987665
Energy at 298.15K-267.997742
Nuclear repulsion energy196.251760
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/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 4179 3772 45.99      
2 A 4159 3754 69.58      
3 A 3275 2956 36.91      
4 A 3265 2947 72.08      
5 A 3254 2937 11.13      
6 A 3191 2880 50.09      
7 A 3181 2871 28.06      
8 A 3108 2805 86.64      
9 A 1636 1477 2.44      
10 A 1630 1471 1.44      
11 A 1618 1460 6.52      
12 A 1590 1435 13.29      
13 A 1554 1403 32.13      
14 A 1525 1377 6.09      
15 A 1509 1362 36.73      
16 A 1479 1335 49.85      
17 A 1400 1264 84.67      
18 A 1333 1203 23.84      
19 A 1290 1164 21.03      
20 A 1197 1080 72.60      
21 A 1176 1061 9.29      
22 A 1149 1037 107.11      
23 A 1026 926 5.24      
24 A 1005 908 19.36      
25 A 919 829 12.10      
26 A 567 512 31.94      
27 A 522 471 61.72      
28 A 490 442 128.40      
29 A 390 352 17.66      
30 A 330 298 85.78      
31 A 272 245 4.66      
32 A 244 220 0.52      
33 A 162 146 3.39      

Unscaled Zero Point Vibrational Energy (zpe) 26810.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 24199.2 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 HF/6-31G**
ABC
0.29129 0.12118 0.09385

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.457 1.364 -0.159
H2 0.430 1.689 -0.142
O3 1.935 -0.044 0.016
H4 2.187 -0.182 0.914
C5 0.725 -0.712 -0.249
H6 0.630 -0.754 -1.327
H7 0.748 -1.732 0.131
C8 -0.454 0.053 0.335
H9 -0.341 0.071 1.423
C10 -1.788 -0.582 -0.012
H11 -1.916 -0.628 -1.088
H12 -1.860 -1.587 0.393
H13 -2.597 0.011 0.398

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.94512.78073.24592.39042.65143.33441.40022.04642.36182.63813.31372.5915
H20.94512.30042.77602.42162.72243.44641.91932.37983.17713.43074.03303.5023
O32.78072.30040.94341.40772.00262.06662.41162.67823.76164.04884.11434.5479
H43.24592.77600.94341.94262.78862.25552.71422.59184.10144.58814.31624.8158
C52.39042.42161.40771.94261.08331.08801.52162.13162.52722.77252.80343.4602
H62.65142.72242.00262.78861.08331.75932.14203.03092.75822.56083.13953.7382
H73.33443.44642.06662.25551.08801.75932.16172.47102.78833.13102.62563.7813
C81.40021.91932.41162.71421.52162.14202.16171.09411.51792.15152.16182.1443
H92.04642.37982.67822.59182.13163.03092.47101.09412.13943.04552.47312.4781
C102.36183.17713.76164.10142.52722.75822.78831.51792.13941.08521.08601.0835
H112.63813.43074.04884.58812.77252.56083.13102.15153.04551.08521.76561.7552
H123.31374.03304.11434.31622.80343.13952.62562.16182.47311.08601.76561.7601
H132.59153.50234.54794.81583.46023.73823.78132.14432.47811.08351.75521.7601

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 109.724 O1 C8 H9 109.648
O1 C8 C10 107.997 H2 O1 C8 108.273
O3 C5 H6 106.286 O3 C5 H7 111.153
O3 C5 C8 110.768 H4 O3 C5 109.856
C5 C8 H9 108.051 C5 C8 C10 112.495
H6 C5 H7 108.243 H6 C5 C8 109.485
H7 C5 C8 110.763 C8 C10 H11 110.377
C8 C10 H12 111.150 C8 C10 H13 109.908
H9 C8 C10 108.900 H11 C10 H12 108.817
H11 C10 H13 108.064 H12 C10 H13 108.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.653 -0.693    
2 H 0.349 0.409    
3 O -0.659 -0.685    
4 H 0.338 0.414    
5 C 0.096 0.236    
6 H 0.133 0.047    
7 H 0.098 -0.026    
8 C 0.191 0.437    
9 H 0.081 -0.056    
10 C -0.341 -0.345    
11 H 0.125 0.085    
12 H 0.105 0.051    
13 H 0.137 0.125    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.549 -1.807 1.663 2.516
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.305 1.947 3.037
y 1.947 -32.032 0.192
z 3.037 0.192 -29.581
Traceless
 xyz
x -2.498 1.947 3.037
y 1.947 -0.589 0.192
z 3.037 0.192 3.087
Polar
3z2-r26.175
x2-y2-1.273
xy1.947
xz3.037
yz0.192


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.967 0.237 0.178
y 0.237 5.453 -0.094
z 0.178 -0.094 5.293


<r2> (average value of r2) Å2
<r2> 131.628
(<r2>)1/2 11.473