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: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-268.130013
Energy at 298.15K-268.139189
Nuclear repulsion energy196.116604
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 LSDA/6-31+G**
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 3675 3620 46.40      
2 A 3093 3046 7.58      
3 A 3082 3036 7.88      
4 A 3079 3032 14.94      
5 A 3069 3023 11.39      
6 A 2990 2945 11.44      
7 A 2980 2935 14.86      
8 A 2941 2897 26.92      
9 A 1447 1425 13.17      
10 A 1424 1402 6.09      
11 A 1414 1393 4.84      
12 A 1408 1387 3.19      
13 A 1353 1332 18.61      
14 A 1343 1323 38.29      
15 A 1318 1298 15.01      
16 A 1305 1286 31.92      
17 A 1274 1255 30.99      
18 A 1154 1137 24.77      
19 A 1150 1133 6.02      
20 A 1120 1103 14.61      
21 A 942 928 12.37      
22 A 925 911 4.40      
23 A 899 885 2.42      
24 A 888 875 3.67      
25 A 827 815 2.99      
26 A 501 494 5.79      
27 A 462 455 4.27      
28 A 343 338 0.58      
29 A 283 278 1.67      
30 A 259 255 20.65      
31 A 201 198 29.74      
32 A 181 179 96.87      
33 A 141 139 5.82      

Unscaled Zero Point Vibrational Energy (zpe) 23733.9 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 23377.9 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 LSDA/6-31+G**
ABC
0.26501 0.13124 0.09694

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.880 -0.180 -0.179
H2 -2.273 0.119 0.668
O3 -0.630 -0.721 0.287
C4 1.655 -0.735 0.041
H5 1.801 -0.704 1.134
H6 1.594 -1.789 -0.276
H7 2.532 -0.271 -0.438
C8 0.422 1.455 0.106
H9 0.604 1.515 1.194
H10 1.219 2.015 -0.411
H11 -0.540 1.940 -0.127
C12 0.407 0.017 -0.341
H13 0.247 -0.040 -1.439

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.98041.43963.58513.94413.83034.42082.83783.30633.80502.50812.30192.4760
H20.98041.88424.06834.18314.41474.94623.05983.24114.11762.63612.86593.2883
O31.43961.88422.29812.57512.53103.27512.42312.71033.37492.69381.41942.0517
C43.58514.06832.29811.10391.10171.10202.51402.73842.82073.46421.50572.1574
H53.94414.18312.57511.10391.79111.78732.76102.52273.18133.75052.15393.0788
H63.83034.41472.53101.10171.79111.79123.46993.74943.82434.29872.16192.4951
H74.42084.94623.27511.10201.78731.79122.77973.09382.63613.79772.14612.5053
C82.83783.05982.42312.51402.76103.46992.77971.10491.10311.10231.50542.1566
H93.30633.24112.71032.73842.52273.74943.09381.10491.78991.79872.15373.0787
H103.80504.11763.37492.82073.18133.82432.63611.10311.78991.78392.15752.4950
H112.50812.63612.69383.46423.75054.29873.79771.10231.79871.78392.15402.5017
C122.30192.86591.41941.50572.15392.16192.14611.50542.15372.15752.15401.1112
H132.47603.28832.05172.15743.07882.49512.50532.15663.07872.49502.50171.1112

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 107.250 H2 O1 O3 100.547
O3 C12 C4 103.524 O3 C12 C8 111.851
O3 C12 H13 107.719 C4 C12 C8 113.212
C4 C12 H13 110.143 H5 C4 H6 108.599
H5 C4 H7 108.237 H5 C4 C12 110.311
H6 C4 H7 108.742 H6 C4 C12 111.077
H7 C4 C12 109.806 C8 C12 H13 110.100
H9 C8 H10 108.312 H9 C8 H11 109.157
H9 C8 C12 110.244 H10 C8 H11 107.975
H10 C8 C12 110.659 H11 C8 C12 110.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.413      
2 H 0.374      
3 O -0.124      
4 C -0.574      
5 H 0.197      
6 H 0.206      
7 H 0.192      
8 C -0.632      
9 H 0.191      
10 H 0.187      
11 H 0.207      
12 C 0.012      
13 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.895 1.399 0.718 1.809
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.762 -2.264 -3.679
y -2.264 -33.499 0.561
z -3.679 0.561 -31.645
Traceless
 xyz
x 2.810 -2.264 -3.679
y -2.264 -2.796 0.561
z -3.679 0.561 -0.014
Polar
3z2-r2-0.029
x2-y23.737
xy-2.264
xz-3.679
yz0.561


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.615 -0.223 -0.038
y -0.223 7.270 0.007
z -0.038 0.007 6.637


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000