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 C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-285.075196
Energy at 298.15K-285.081628
HF Energy-285.075196
Nuclear repulsion energy224.515231
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 HSEh1PBE/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 3312 3162 0.25      
2 A 3279 3131 2.07      
3 A 3180 3037 6.07      
4 A 3144 3002 4.58      
5 A 3073 2934 12.46      
6 A 1668 1593 40.23      
7 A 1554 1483 52.94      
8 A 1490 1422 9.42      
9 A 1476 1409 10.11      
10 A 1416 1352 1.50      
11 A 1391 1328 9.00      
12 A 1288 1229 24.71      
13 A 1224 1169 11.25      
14 A 1065 1017 2.83      
15 A 1061 1013 3.05      
16 A 1035 988 13.37      
17 A 1020 974 2.13      
18 A 960 917 6.25      
19 A 931 889 15.91      
20 A 914 872 6.54      
21 A 802 766 46.97      
22 A 671 641 0.20      
23 A 652 622 2.40      
24 A 649 620 0.24      
25 A 337 322 2.50      
26 A 252 241 2.65      
27 A 100 95 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 18971.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 18114.4 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 HSEh1PBE/6-31+G**
ABC
0.31042 0.11954 0.08772

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.077 0.017 0.001
H2 -2.452 -0.172 1.009
H3 -2.467 0.973 -0.347
H4 -2.441 -0.775 -0.656
C5 -0.615 0.049 -0.002
O6 0.141 -1.072 -0.001
N7 1.425 -0.724 0.001
C8 1.469 0.568 0.001
H9 2.362 1.097 -0.001
C10 0.215 1.101 -0.000
H11 -0.052 2.104 0.001

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09241.08911.09141.46242.47083.57933.58844.56812.53482.9076
H21.09241.77481.77082.10872.92444.04354.11585.07983.12273.4582
H31.08911.77481.77532.09813.33194.25973.97174.84242.70672.6891
H41.09141.77081.77532.10742.68023.92154.18605.19603.31653.7979
C51.46242.10872.09812.10741.35192.18122.14753.15571.33942.1302
O62.47082.92443.33192.68021.35191.33032.11063.10442.17383.1812
N73.57934.04354.25973.92152.18121.33031.29312.04802.18933.1896
C83.58844.11583.97174.18602.14752.11061.29311.03761.36242.1606
H94.56815.07984.84245.19603.15573.10442.04801.03762.14692.6146
C102.53483.12272.70673.31651.33942.17382.18931.36242.14691.0376
H112.90763.45822.68913.79792.13023.18123.18962.16062.61461.0376

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 122.739 C1 C5 C10 129.518
H2 C1 H3 108.892 H2 C1 H4 108.358
H2 C1 C5 110.412 H3 C1 H4 109.003
H3 C1 C5 109.765 H4 C1 C5 110.371
C5 O6 N7 108.821 C5 C10 C8 105.278
C5 C10 H11 126.854 O6 C5 C10 107.742
O6 N7 C8 107.121 N7 C8 H9 122.599
N7 C8 C10 111.037 C8 C10 H11 127.868
H9 C8 C10 126.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.696      
2 H 0.199      
3 H 0.184      
4 H 0.199      
5 C 0.021      
6 O -0.024      
7 N -0.253      
8 C -0.193      
9 H 0.178      
10 C 0.214      
11 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.069 2.718 -0.000 3.416
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.489 3.836 0.000
y 3.836 -35.881 -0.001
z 0.000 -0.001 -36.497
Traceless
 xyz
x 4.700 3.836 0.000
y 3.836 -1.887 -0.001
z 0.000 -0.001 -2.812
Polar
3z2-r2-5.625
x2-y24.391
xy3.836
xz0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.104 0.289 -0.000
y 0.289 8.163 0.000
z -0.000 0.000 5.423


<r2> (average value of r2) Å2
<r2> 135.439
(<r2>)1/2 11.638