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 (Hydroperoxide, 1-methylethyl)

using model chemistry: HF/6-311G*

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/6-311G*
 hartrees
Energy at 0K-267.937280
Energy at 298.15K-267.946989
Nuclear repulsion energy197.308046
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/6-311G*
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 4151 3754 45.20      
2 A 3266 2953 55.60      
3 A 3262 2950 35.90      
4 A 3257 2945 100.59      
5 A 3240 2930 11.57      
6 A 3214 2907 9.32      
7 A 3191 2886 26.27      
8 A 3182 2878 22.52      
9 A 1648 1491 8.03      
10 A 1629 1473 2.36      
11 A 1621 1466 1.60      
12 A 1617 1462 3.01      
13 A 1590 1438 33.46      
14 A 1556 1407 27.22      
15 A 1551 1403 24.20      
16 A 1516 1371 21.58      
17 A 1491 1348 9.62      
18 A 1304 1179 3.82      
19 A 1295 1171 46.12      
20 A 1247 1128 9.40      
21 A 1196 1081 3.03      
22 A 1031 932 10.70      
23 A 1015 918 6.27      
24 A 1007 910 10.25      
25 A 890 805 3.30      
26 A 552 500 7.17      
27 A 504 456 5.52      
28 A 379 343 0.37      
29 A 319 289 3.78      
30 A 274 248 27.80      
31 A 240 217 111.53      
32 A 222 201 37.29      
33 A 145 131 6.56      

Unscaled Zero Point Vibrational Energy (zpe) 26299.2 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 23785.0 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/6-311G*
ABC
0.26374 0.13157 0.09680

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.869 -0.187 -0.187
H2 -2.294 0.175 0.570
O3 -0.671 -0.661 0.317
C4 1.636 -0.787 0.032
H5 1.804 -0.777 1.103
H6 1.534 -1.818 -0.285
H7 2.508 -0.363 -0.453
C8 0.477 1.466 0.098
H9 0.632 1.542 1.170
H10 1.306 1.959 -0.400
H11 -0.428 2.000 -0.159
C12 0.393 0.008 -0.328
H13 0.215 -0.052 -1.397

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.94111.38313.56263.93713.77434.38882.88403.32973.83792.61962.27482.4134
H20.94111.84324.08244.24114.39984.94023.09403.28564.13352.71092.83893.1966
O31.38311.84322.32832.59952.56193.28512.42662.69773.35962.71451.41312.0234
C43.56264.08242.32831.08481.08301.08442.53422.78002.79993.47411.51872.1447
H53.93714.24112.59951.08481.75661.75792.79242.59853.16113.78012.15743.0495
H63.77434.39982.56191.08301.75661.75903.47043.77073.78584.29472.15312.4683
H74.38884.94023.28511.08441.75791.75902.78813.12802.61613.78112.15112.4991
C82.88403.09402.42662.53422.79243.47042.78811.08591.08511.08281.52102.1459
H93.32973.28562.69772.78002.59853.77073.12801.08591.75831.76142.15753.0498
H103.83794.13353.35962.79993.16113.78582.61611.08511.75831.75082.15542.4955
H112.61962.71092.71453.47413.78014.29473.78111.08281.76141.75082.16192.4811
C122.27482.83891.41311.51872.15742.15312.15111.52102.15752.15542.16191.0848
H132.41343.19662.02342.14473.04952.46832.49912.14593.04982.49552.48111.0848

picture of Hydroperoxide, 1-methylethyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O3 C12 108.887 H2 O1 O3 103.304
O3 C12 C4 105.098 O3 C12 C8 111.537
O3 C12 H13 107.474 C4 C12 C8 112.963
C4 C12 H13 109.810 H5 C4 H6 108.248
H5 C4 H7 108.270 H5 C4 C12 110.825
H6 C4 H7 108.498 H6 C4 C12 110.581
H7 C4 C12 110.339 C8 C12 H13 109.738
H9 C8 H10 108.176 H9 C8 H11 108.625
H9 C8 C12 110.603 H10 C8 H11 107.721
H10 C8 C12 110.478 H11 C8 C12 111.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.458 -0.491   -0.506
2 H 0.439 0.466   0.474
3 O -0.286 -0.327   -0.296
4 C -0.634 -0.404   -0.585
5 H 0.214 0.100   0.154
6 H 0.230 0.101   0.147
7 H 0.210 0.086   0.142
8 C -0.633 -0.357   -0.554
9 H 0.206 0.090   0.148
10 H 0.210 0.072   0.132
11 H 0.222 0.071   0.124
12 C 0.079 0.611   0.600
13 H 0.200 -0.015   0.022


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.697 1.545 0.632 1.809
CHELPG        
AIM        
ESP 0.702 1.544 0.644 1.815


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.279 -2.516 -3.592
y -2.516 -32.970 0.652
z -3.592 0.652 -31.241
Traceless
 xyz
x 2.826 -2.516 -3.592
y -2.516 -2.710 0.652
z -3.592 0.652 -0.116
Polar
3z2-r2-0.233
x2-y23.691
xy-2.516
xz-3.592
yz0.652


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.042 -0.377 -0.026
y -0.377 5.735 0.029
z -0.026 0.029 5.393


<r2> (average value of r2) Å2
<r2> 130.660
(<r2>)1/2 11.431