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/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-267.901281
Energy at 298.15K-267.910936
Nuclear repulsion energy196.850423
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/cc-pVDZ
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 4120 3741 82.48      
2 A 3276 2975 33.97      
3 A 3274 2973 24.53      
4 A 3266 2966 70.14      
5 A 3252 2953 12.54      
6 A 3202 2907 18.56      
7 A 3188 2894 25.07      
8 A 3180 2887 21.48      
9 A 1612 1463 6.39      
10 A 1591 1445 2.45      
11 A 1585 1439 1.89      
12 A 1580 1435 1.98      
13 A 1547 1405 16.87      
14 A 1529 1388 25.23      
15 A 1524 1384 41.11      
16 A 1486 1349 21.08      
17 A 1467 1332 14.75      
18 A 1290 1172 9.42      
19 A 1281 1163 42.60      
20 A 1238 1124 11.22      
21 A 1167 1060 1.72      
22 A 1025 930 10.07      
23 A 1005 912 7.07      
24 A 997 905 6.68      
25 A 888 806 4.53      
26 A 549 499 6.95      
27 A 502 456 4.71      
28 A 377 343 0.57      
29 A 319 290 2.47      
30 A 271 246 5.94      
31 A 225 204 16.45      
32 A 208 189 125.68      
33 A 144 131 6.05      

Unscaled Zero Point Vibrational Energy (zpe) 26081.5 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 23682.0 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/cc-pVDZ
ABC
0.26292 0.13116 0.09660

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.870 -0.182 -0.192
H2 -2.312 0.129 0.587
O3 -0.669 -0.662 0.319
C4 1.638 -0.788 0.030
H5 1.804 -0.782 1.109
H6 1.533 -1.823 -0.296
H7 2.514 -0.356 -0.456
C8 0.476 1.467 0.100
H9 0.643 1.542 1.178
H10 1.302 1.966 -0.412
H11 -0.443 1.996 -0.149
C12 0.396 0.010 -0.326
H13 0.218 -0.049 -1.403

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.94811.39083.56743.94433.77934.39632.88303.34213.83752.60412.27822.4178
H20.94811.84294.09334.24834.40124.96203.13093.32904.17532.74222.86023.2239
O31.39081.84292.32882.59962.56403.29112.42722.70533.36532.70801.41482.0319
C43.56744.09332.32881.09211.09031.09142.53742.78142.80943.48031.51872.1485
H53.94434.24832.59961.09211.76981.77122.79962.59883.18073.78822.16143.0602
H63.77934.40122.56401.09031.76981.77253.47783.77983.79794.30212.15682.4702
H74.39634.96203.29111.09141.77121.77252.79063.12672.62023.79142.15412.5027
C82.88303.13092.42722.53742.79963.47782.79061.09311.09221.08981.52052.1500
H93.34213.32902.70532.78142.59883.77983.12671.09311.77201.77422.16163.0614
H103.83754.17533.36532.80943.18073.79792.62021.09221.77201.76502.15782.4931
H112.60412.74222.70803.48033.78824.30213.79141.08981.77421.76502.16332.4877
C122.27822.86021.41481.51872.16142.15682.15411.52052.16162.15782.16331.0927
H132.41783.22392.03192.14853.06022.47022.50272.15003.06142.49312.48771.0927

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 108.584 H2 O1 O3 102.326
O3 C12 C4 105.043 O3 C12 C8 111.520
O3 C12 H13 107.566 C4 C12 C8 113.209
C4 C12 H13 109.640 H5 C4 H6 108.379
H5 C4 H7 108.425 H5 C4 C12 110.700
H6 C4 H7 108.669 H6 C4 C12 110.444
H7 C4 C12 110.159 C8 C12 H13 109.638
H9 C8 H10 108.366 H9 C8 H11 108.732
H9 C8 C12 110.537 H10 C8 H11 107.976
H10 C8 C12 110.283 H11 C8 C12 110.865
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.171 -0.442    
2 H 0.183 0.429    
3 O -0.315 -0.327    
4 C -0.016 -0.352    
5 H 0.038 0.089    
6 H 0.046 0.091    
7 H 0.033 0.072    
8 C -0.023 -0.288    
9 H 0.030 0.073    
10 H 0.030 0.055    
11 H 0.039 0.056    
12 C 0.102 0.555    
13 H 0.024 -0.011    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.639 1.376 0.574 1.622
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.968 -2.163 -3.378
y -2.163 -32.744 0.585
z -3.378 0.585 -30.996
Traceless
 xyz
x 2.902 -2.163 -3.378
y -2.163 -2.763 0.585
z -3.378 0.585 -0.139
Polar
3z2-r2-0.279
x2-y23.777
xy-2.163
xz-3.378
yz0.585


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.103 -0.397 -0.014
y -0.397 5.731 0.024
z -0.014 0.024 5.374


<r2> (average value of r2) Å2
<r2> 130.843
(<r2>)1/2 11.439