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: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-269.494406
Energy at 298.15K-269.504237
Nuclear repulsion energy195.564447
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 B3PW91/6-31G(2df,p)
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 3844 3696 23.83      
2 A 3780 3634 51.53      
3 A 3140 3019 16.92      
4 A 3131 3010 27.09      
5 A 3095 2975 24.70      
6 A 3049 2931 17.69      
7 A 3015 2899 45.42      
8 A 2913 2801 76.47      
9 A 1496 1438 1.34      
10 A 1487 1429 3.12      
11 A 1480 1423 7.97      
12 A 1446 1390 33.95      
13 A 1409 1355 47.57      
14 A 1392 1338 3.21      
15 A 1380 1327 3.27      
16 A 1353 1301 48.45      
17 A 1298 1248 35.93      
18 A 1224 1177 16.03      
19 A 1187 1141 29.77      
20 A 1100 1057 22.93      
21 A 1092 1050 16.89      
22 A 1058 1017 107.01      
23 A 940 904 3.19      
24 A 923 887 14.43      
25 A 853 820 10.96      
26 A 554 533 112.80      
27 A 518 498 28.15      
28 A 476 458 5.60      
29 A 360 346 30.30      
30 A 342 328 52.69      
31 A 250 241 2.36      
32 A 219 211 0.31      
33 A 153 147 3.33      

Unscaled Zero Point Vibrational Energy (zpe) 24977.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 24013.1 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 B3PW91/6-31G(2df,p)
ABC
0.28995 0.12130 0.09376

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.402 1.374 -0.155
H2 0.539 1.583 -0.192
O3 1.931 -0.058 -0.008
H4 2.130 -0.095 0.932
C5 0.707 -0.748 -0.217
H6 0.600 -0.839 -1.303
H7 0.731 -1.760 0.212
C8 -0.465 0.055 0.342
H9 -0.372 0.062 1.447
C10 -1.809 -0.543 -0.029
H11 -1.917 -0.591 -1.118
H12 -1.918 -1.552 0.381
H13 -2.618 0.077 0.364

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O10.96572.74173.12282.39512.68703.35331.41072.07062.38122.66163.33872.6193
H20.96572.15962.57112.33732.66543.37361.90512.41503.17243.40884.02483.5425
O32.74172.15960.96161.42062.01512.09442.42382.72643.77144.04024.14704.5665
H43.12282.57110.96161.94212.80952.29122.66512.55894.07934.56354.33724.7852
C52.39512.33731.42061.94211.09571.09991.52642.14182.53112.77852.80953.4749
H62.68702.66542.01512.80951.09571.77842.15413.05272.74082.53563.11203.7383
H73.35333.37362.09442.29121.09991.77842.17812.46252.82713.18542.66263.8237
C81.41071.90512.42382.66511.52642.15412.17811.10861.51762.15822.16722.1538
H92.07062.41502.72642.55892.14183.05272.46251.10862.14733.06452.47622.4939
C102.38123.17243.77144.07932.53112.74082.82711.51762.14731.09461.09481.0932
H112.66163.40884.04024.56352.77852.53563.18542.15823.06451.09461.78031.7704
H123.33874.02484.14704.33722.80953.11202.66262.16722.47621.09481.78031.7739
H132.61933.54254.56654.78523.47493.73833.82372.15382.49391.09321.77041.7739

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 109.205 O1 C8 H9 109.975
O1 C8 C10 108.758 H2 O1 C8 105.036
O3 C5 H6 105.693 O3 C5 H7 111.761
O3 C5 C8 110.609 H4 O3 C5 107.662
C5 C8 H9 107.685 C5 C8 C10 112.502
H6 C5 H7 108.190 H6 C5 C8 109.374
H7 C5 C8 111.024 C8 C10 H11 110.372
C8 C10 H12 111.081 C8 C10 H13 110.108
H9 C8 C10 108.697 H11 C10 H12 108.812
H11 C10 H13 108.042 H12 C10 H13 108.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.461      
2 H 0.302      
3 O -0.450      
4 H 0.305      
5 C -0.116      
6 H 0.143      
7 H 0.116      
8 C 0.103      
9 H 0.076      
10 C -0.454      
11 H 0.147      
12 H 0.134      
13 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.522 -1.518 1.402 2.131
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.049 1.998 2.727
y 1.998 -32.039 0.128
z 2.727 0.128 -29.212
Traceless
 xyz
x -1.424 1.998 2.727
y 1.998 -1.409 0.128
z 2.727 0.128 2.833
Polar
3z2-r25.665
x2-y2-0.010
xy1.998
xz2.727
yz0.128


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.862 0.219 0.147
y 0.219 6.134 -0.056
z 0.147 -0.056 5.804


<r2> (average value of r2) Å2
<r2> 131.361
(<r2>)1/2 11.461