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All results from a given calculation for C3H8O2 (Hydroperoxide, 1-methylethyl)

using model chemistry: HF/3-21G

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/3-21G
 hartrees
Energy at 0K-266.413290
Energy at 298.15K-266.422744
Nuclear repulsion energy194.081935
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/3-21G
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 3825 3464 44.13      
2 A 3301 2990 16.85      
3 A 3289 2979 50.11      
4 A 3281 2971 31.04      
5 A 3267 2959 1.32      
6 A 3256 2949 3.56      
7 A 3213 2910 16.77      
8 A 3208 2905 12.03      
9 A 1685 1526 11.73      
10 A 1664 1507 1.56      
11 A 1661 1504 4.35      
12 A 1651 1495 2.44      
13 A 1579 1430 10.73      
14 A 1562 1415 15.62      
15 A 1522 1379 13.00      
16 A 1501 1359 5.45      
17 A 1456 1318 87.82      
18 A 1322 1197 17.68      
19 A 1267 1147 31.41      
20 A 1238 1121 12.92      
21 A 1191 1078 3.39      
22 A 1061 961 2.14      
23 A 1027 930 0.27      
24 A 976 884 17.22      
25 A 861 780 5.23      
26 A 516 468 9.91      
27 A 481 435 5.67      
28 A 373 338 2.40      
29 A 298 270 5.23      
30 A 259 235 0.13      
31 A 225 204 0.45      
32 A 146 132 94.35      
33 A 132 120 94.61      

Unscaled Zero Point Vibrational Energy (zpe) 26147.6 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 23679.3 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 HF/3-21G
ABC
0.26168 0.12654 0.09432

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.900 -0.114 -0.205
H2 -2.502 -0.289 0.536
O3 -0.661 -0.691 0.334
C4 1.672 -0.778 0.016
H5 1.816 -0.767 1.089
H6 1.572 -1.805 -0.310
H7 2.542 -0.339 -0.459
C8 0.472 1.465 0.128
H9 0.657 1.493 1.195
H10 1.267 1.999 -0.380
H11 -0.470 1.953 -0.078
C12 0.419 0.017 -0.347
H13 0.224 -0.033 -1.407

Atom - Atom Distances (Å)
  O1 H2 O3 C4 H5 H6 H7 C8 H9 H10 H11 C12 H13
O10.97061.46893.64033.98873.86314.45462.86943.32883.81142.51682.32732.4426
H20.97061.89544.23544.37984.42885.14143.47733.68634.50343.08753.06733.3583
O31.46891.89542.35672.59082.57723.31812.44432.69223.38552.68211.45982.0611
C43.64034.23542.35671.08301.08211.08342.54622.75332.83423.47181.52762.1625
H53.98874.37982.59081.08301.75941.76272.77682.54213.17973.73922.15103.0502
H63.86314.42882.57721.08211.75941.76393.47743.73913.81674.28262.15602.4814
H74.45465.14143.31811.08341.76271.76392.80713.10592.66403.80322.15492.5221
C82.86943.47732.44432.54622.77683.47742.80711.08381.08361.08051.52472.1592
H93.32883.68632.69222.75332.54213.73913.10591.08381.76361.76092.14783.0479
H103.81144.50343.38552.83423.17973.81672.66401.08361.76361.76332.15602.5043
H112.51683.08752.68213.47183.73924.28263.80321.08051.76091.76332.14702.4885
C122.32733.06731.45981.52762.15102.15602.15491.52472.14782.15602.14701.0795
H132.44263.35832.06112.16253.05022.48142.52212.15923.04792.50432.48851.0795

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 105.250 H2 O1 O3 99.956
O3 C12 C4 104.141 O3 C12 C8 109.952
O3 C12 H13 107.582 C4 C12 C8 113.060
C4 C12 H13 110.911 H5 C4 H6 108.706
H5 C4 H7 108.913 H5 C4 C12 109.788
H6 C4 H7 109.085 H6 C4 C12 110.240
H7 C4 C12 110.076 C8 C12 H13 110.853
H9 C8 H10 108.916 H9 C8 H11 108.896
H9 C8 C12 109.694 H10 C8 H11 109.131
H10 C8 C12 110.358 H11 C8 C12 109.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.417 -0.461   -0.500
2 H 0.410 0.444   0.475
3 O -0.383 -0.326   -0.344
4 C -0.595 -0.370   -0.614
5 H 0.218 0.096   0.171
6 H 0.226 0.096   0.160
7 H 0.205 0.079   0.152
8 C -0.600 -0.329   -0.457
9 H 0.207 0.085   0.128
10 H 0.195 0.067   0.098
11 H 0.234 0.067   0.125
12 C 0.068 0.558   0.589
13 H 0.232 -0.006   0.018


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.462 0.657 0.552 0.975
CHELPG 0.720 1.463 0.625 1.746
AIM        
ESP 0.446 0.648 0.569 0.971


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.963 -0.065 -3.633
y -0.065 -32.615 0.071
z -3.633 0.071 -31.188
Traceless
 xyz
x 4.938 -0.065 -3.633
y -0.065 -3.539 0.071
z -3.633 0.071 -1.399
Polar
3z2-r2-2.799
x2-y25.651
xy-0.065
xz-3.633
yz0.071


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.115 -0.269 -0.128
y -0.269 4.917 -0.178
z -0.128 -0.178 4.761


<r2> (average value of r2) Å2
<r2> 133.152
(<r2>)1/2 11.539