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: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-269.520967
Energy at 298.15K-269.530222
HF Energy-269.520967
Nuclear repulsion energy194.568952
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 TPSSh/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 3733 3602 25.05      
2 A 3129 3019 21.94      
3 A 3122 3013 21.91      
4 A 3119 3010 39.65      
5 A 3108 2999 16.56      
6 A 3043 2936 16.74      
7 A 3034 2928 19.40      
8 A 3016 2911 26.72      
9 A 1525 1472 4.74      
10 A 1505 1452 1.87      
11 A 1498 1446 1.86      
12 A 1491 1439 1.49      
13 A 1413 1363 3.92      
14 A 1399 1350 18.55      
15 A 1377 1329 2.32      
16 A 1369 1321 23.18      
17 A 1336 1289 40.83      
18 A 1194 1152 3.85      
19 A 1172 1131 28.75      
20 A 1136 1096 10.60      
21 A 946 913 2.58      
22 A 944 911 2.12      
23 A 917 885 1.77      
24 A 900 869 9.97      
25 A 817 789 3.03      
26 A 490 473 5.36      
27 A 452 436 4.05      
28 A 334 323 0.47      
29 A 279 269 16.37      
30 A 268 259 67.22      
31 A 226 218 30.53      
32 A 194 187 1.31      
33 A 135 130 4.88      

Unscaled Zero Point Vibrational Energy (zpe) 24310.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23459.3 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 TPSSh/6-31G(2df,p)
ABC
0.25918 0.12857 0.09480

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.898 -0.211 -0.185
H2 -2.211 0.255 0.606
O3 -0.633 -0.728 0.315
C4 1.680 -0.736 0.032
H5 1.841 -0.712 1.115
H6 1.620 -1.779 -0.288
H7 2.540 -0.266 -0.455
C8 0.412 1.476 0.103
H9 0.598 1.551 1.180
H10 1.194 2.033 -0.424
H11 -0.550 1.943 -0.125
C12 0.405 0.015 -0.339
H13 0.234 -0.047 -1.422

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.97001.45503.62243.98943.85284.44602.87413.34613.82752.54132.31832.4694
H20.97001.88144.05574.19614.42854.89562.93653.14663.97712.47862.79123.1905
O31.45501.88142.33042.59982.55853.29772.44852.73123.39242.70861.43432.0574
C43.62244.05572.33041.09481.09311.09402.55032.77822.84743.48911.52572.1632
H53.98944.19612.59981.09481.77671.77512.80202.58253.21183.78152.16863.0754
H63.85284.42852.55851.09311.77671.77813.49393.78043.83784.31172.16762.4911
H74.44604.89563.29771.09401.77511.77812.80633.12202.66413.81302.15692.5104
C82.87412.93652.44852.55032.80203.49392.80631.09571.09511.09331.52612.1623
H93.34613.14662.73122.77822.58253.78043.12201.09571.77711.78152.16883.0752
H103.82753.97713.39242.84743.21183.83782.66411.09511.77711.77212.16842.4991
H112.54132.47862.70863.48913.78154.31173.81301.09331.78151.77212.16212.5016
C122.31832.79121.43431.52572.16862.16762.15691.52612.16882.16842.16211.0982
H132.46943.19052.05742.16323.07542.49112.51042.16233.07522.49912.50161.0982

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 106.711 H2 O1 O3 99.821
O3 C12 C4 103.828 O3 C12 C8 111.564
O3 C12 H13 107.923 C4 C12 C8 113.376
C4 C12 H13 109.992 H5 C4 H6 108.598
H5 C4 H7 108.387 H5 C4 C12 110.624
H6 C4 H7 108.783 H6 C4 C12 110.645
H7 C4 C12 109.747 C8 C12 H13 109.895
H9 C8 H10 108.411 H9 C8 H11 108.942
H9 C8 C12 110.553 H10 C8 H11 108.146
H10 C8 C12 110.556 H11 C8 C12 110.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability