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All results from a given calculation for C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-285.294658
Energy at 298.15K-285.301090
Nuclear repulsion energy224.668883
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 mPW1PW91/6-31G**
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 3322 3161 0.17      
2 A 3284 3124 3.17      
3 A 3190 3036 6.52      
4 A 3154 3001 6.12      
5 A 3083 2933 11.96      
6 A 1678 1597 36.27      
7 A 1560 1485 46.31      
8 A 1503 1430 7.98      
9 A 1489 1416 8.45      
10 A 1426 1357 1.54      
11 A 1401 1333 8.12      
12 A 1296 1233 21.99      
13 A 1232 1172 9.62      
14 A 1072 1020 2.11      
15 A 1070 1018 4.95      
16 A 1040 989 14.78      
17 A 1027 978 0.95      
18 A 965 918 6.53      
19 A 936 891 15.63      
20 A 917 872 4.55      
21 A 811 772 34.51      
22 A 672 640 0.37      
23 A 656 625 2.96      
24 A 652 621 0.46      
25 A 336 320 2.32      
26 A 254 242 2.19      
27 A 93 89 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 19059.4 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 18135.0 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 mPW1PW91/6-31G**
ABC
0.31073 0.11971 0.08783

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.098 0.015 -0.000
H2 -2.452 -0.525 0.882
H3 -2.540 1.010 -0.000
H4 -2.452 -0.525 -0.882
C5 -0.618 0.112 0.000
O6 0.065 -1.045 0.000
N7 1.423 -0.789 -0.000
C8 1.525 0.514 -0.000
H9 2.510 0.961 0.000
C10 0.260 1.152 0.000
H11 0.038 2.207 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09301.08971.09301.48312.40823.61093.65694.70332.61763.0604
H21.09301.77291.76452.13242.71733.98244.20395.25363.30803.7996
H31.08971.77291.77292.12203.31824.35224.09525.04972.80342.8420
H41.09301.76451.77292.13242.71723.98234.20385.25353.30813.7997
C51.48312.13242.12202.13241.34302.23052.18023.24051.36112.1951
O62.40822.71733.31822.71721.34301.38142.13583.16202.20553.2514
N73.61093.98244.35223.98232.23051.38141.30752.06032.26313.3004
C83.65694.20394.09524.20382.18022.13581.30751.08111.41692.2529
H94.70335.25365.04975.25353.24053.16202.06031.08112.25782.7676
C102.61763.30802.80343.30811.36112.20552.26311.41692.25781.0775
H113.06043.79962.84203.79972.19513.25143.30042.25292.76761.0775

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 116.803 C1 C5 C10 133.903
H2 C1 H3 108.627 H2 C1 H4 107.645
H2 C1 C5 110.831 H3 C1 H4 108.631
H3 C1 C5 110.194 H4 C1 C5 110.829
C5 O6 N7 109.904 C5 C10 C8 103.386
C5 C10 H11 127.971 O6 C5 C10 109.294
O6 N7 C8 105.147 N7 C8 H9 118.902
N7 C8 C10 112.270 C8 C10 H11 128.643
H9 C8 C10 128.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.454      
2 H 0.173      
3 H 0.158      
4 H 0.173      
5 C 0.378      
6 O -0.366      
7 N -0.168      
8 C 0.078      
9 H 0.156      
10 C -0.269      
11 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.948 2.570 -0.000 3.225
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.694 3.562 0.000
y 3.562 -34.925 -0.000
z 0.000 -0.000 -35.524
Traceless
 xyz
x 4.531 3.562 0.000
y 3.562 -1.816 -0.000
z 0.000 -0.000 -2.715
Polar
3z2-r2-5.430
x2-y24.231
xy3.562
xz0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 134.722
(<r2>)1/2 11.607