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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-268.666369
Energy at 298.15K-268.675828
HF Energy-267.872259
Nuclear repulsion energy194.945413
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 MP3/6-31G*
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 3780 3548 35.90      
2 A 3203 3007 19.31      
3 A 3202 3006 14.02      
4 A 3192 2996 33.96      
5 A 3182 2987 10.80      
6 A 3111 2920 12.79      
7 A 3107 2916 23.16      
8 A 3105 2914 7.83      
9 A 1573 1477 8.38      
10 A 1555 1460 2.32      
11 A 1548 1453 2.32      
12 A 1542 1448 1.60      
13 A 1475 1384 6.98      
14 A 1470 1380 28.16      
15 A 1433 1345 3.00      
16 A 1430 1342 36.19      
17 A 1401 1315 48.21      
18 A 1243 1167 5.69      
19 A 1231 1156 28.46      
20 A 1192 1119 10.25      
21 A 1021 958 2.08      
22 A 990 929 1.46      
23 A 962 903 1.62      
24 A 947 889 5.92      
25 A 857 804 3.04      
26 A 517 485 6.06      
27 A 482 453 4.72      
28 A 362 340 0.56      
29 A 300 282 3.13      
30 A 267 251 16.97      
31 A 229 215 94.56      
32 A 218 204 31.99      
33 A 139 130 6.01      

Unscaled Zero Point Vibrational Energy (zpe) 25132.9 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23589.7 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 MP3/6-31G*
ABC
0.26099 0.12880 0.09534

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.897 -0.187 -0.197
H2 -2.286 0.169 0.620
O3 -0.646 -0.705 0.325
C4 1.666 -0.756 0.027
H5 1.825 -0.733 1.110
H6 1.585 -1.798 -0.292
H7 2.534 -0.303 -0.461
C8 0.445 1.469 0.105
H9 0.602 1.526 1.187
H10 1.263 1.997 -0.394
H11 -0.492 1.972 -0.146
C12 0.404 0.013 -0.336
H13 0.224 -0.048 -1.416

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.97231.45103.61553.98273.83754.44062.88403.33173.84672.57642.31442.4507
H20.97231.88144.10214.23744.43644.96233.06803.24174.11932.65642.85943.2395
O31.45101.88142.33202.59322.55963.30042.44192.69843.38572.72201.43362.0541
C43.61554.10212.33201.09441.09271.09392.53912.77232.81413.48231.52152.1594
H53.98274.23742.59321.09441.77701.77602.78602.57003.16713.77632.15963.0678
H63.83754.43642.55961.09271.77701.77873.48233.76863.80974.30592.16172.4846
H74.44064.96233.30041.09391.77601.77872.79723.12942.62873.79852.15662.5125
C82.88403.06802.44192.53912.78603.48232.79721.09521.09461.09231.52162.1596
H93.33173.24172.69842.77232.57003.76863.12941.09521.77741.78152.15613.0660
H103.84674.11933.38572.81413.16713.80972.62871.09461.77741.77262.16292.5115
H112.57642.65642.72203.48233.77634.30593.79851.09231.78151.77262.16232.4912
C122.31442.85941.43361.52152.15962.16172.15661.52162.15612.16292.16231.0971
H132.45073.23952.05412.15943.06782.48462.51252.15963.06602.51152.49121.0971

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 106.707 H2 O1 O3 99.981
O3 C12 C4 104.175 O3 C12 C8 111.409
O3 C12 H13 107.784 C4 C12 C8 113.104
C4 C12 H13 110.052 H5 C4 H6 108.678
H5 C4 H7 108.506 H5 C4 C12 110.228
H6 C4 H7 108.874 H6 C4 C12 110.491
H7 C4 C12 110.016 C8 C12 H13 110.060
H9 C8 H10 108.517 H9 C8 H11 109.058
H9 C8 C12 109.899 H10 C8 H11 108.293
H10 C8 C12 110.462 H11 C8 C12 110.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability