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

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-285.087548
Energy at 298.15K-285.093769
Nuclear repulsion energy222.650487
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 PBEPBE/6-311G*
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 3201 3168 1.22      
2 A 3164 3131 4.91      
3 A 3076 3044 9.81      
4 A 3036 3005 10.10      
5 A 2980 2949 16.40      
6 A 1598 1581 34.75      
7 A 1473 1458 37.95      
8 A 1457 1441 11.31      
9 A 1443 1428 10.39      
10 A 1377 1363 1.03      
11 A 1334 1320 5.82      
12 A 1224 1211 18.47      
13 A 1176 1164 10.94      
14 A 1032 1021 3.58      
15 A 1030 1019 5.44      
16 A 996 985 7.71      
17 A 966 956 1.24      
18 A 911 902 9.08      
19 A 853 844 12.71      
20 A 848 840 6.12      
21 A 770 762 37.79      
22 A 648 641 0.23      
23 A 630 624 1.99      
24 A 622 615 0.84      
25 A 325 321 2.10      
26 A 241 238 2.59      
27 A 80 79 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 18244.9 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 18055.2 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 PBEPBE/6-311G*
ABC
0.30527 0.11777 0.08636

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.110 0.016 0.000
H2 2.473 -0.527 -0.887
H3 2.559 1.018 -0.000
H4 2.473 -0.526 0.887
C5 0.626 0.111 -0.000
O6 -0.062 -1.060 0.000
N7 -1.445 -0.792 0.000
C8 -1.532 0.524 -0.000
H9 -2.524 0.977 -0.000
C10 -0.259 1.158 -0.000
H11 -0.033 2.221 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10131.09781.10131.48752.42433.64613.67804.73292.63063.0749
H21.10131.78311.77432.14622.73844.02624.23515.29333.33053.8232
H31.09781.78311.78312.13523.34494.39434.12125.08342.82212.8578
H41.10131.77431.78312.14622.73884.02634.23505.29323.33033.8228
C51.48752.14622.13522.14621.35832.25962.19753.26661.37082.2097
O62.42432.73843.34492.73881.35831.40852.16103.19472.22633.2802
N73.64614.02624.39434.02632.25961.40851.31922.07172.28223.3270
C83.67804.23514.12124.23502.19752.16101.31921.08991.42202.2638
H94.73295.29335.08345.29323.26663.19472.07171.08992.27182.7841
C102.63063.33052.82213.33031.37082.22632.28221.42202.27181.0864
H113.07493.82322.85783.82282.20973.28023.32702.26382.78411.0864

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 116.764 C1 C5 C10 133.914
H2 C1 H3 108.349 H2 C1 H4 107.322
H2 C1 C5 111.123 H3 C1 H4 108.348
H3 C1 C5 110.453 H4 C1 C5 111.124
C5 O6 N7 109.493 C5 C10 C8 103.768
C5 C10 H11 127.750 O6 C5 C10 109.322
O6 N7 C8 104.744 N7 C8 H9 118.313
N7 C8 C10 112.672 C8 C10 H11 128.482
H9 C8 C10 129.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.702      
2 H 0.249      
3 H 0.240      
4 H 0.249      
5 C 0.320      
6 O -0.200      
7 N -0.134      
8 C -0.021      
9 H 0.214      
10 C -0.414      
11 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.923 2.506 -0.000 3.158
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.461 -3.485 0.000
y -3.485 -35.565 -0.000
z 0.000 -0.000 -36.322
Traceless
 xyz
x 4.483 -3.485 0.000
y -3.485 -1.674 -0.000
z 0.000 -0.000 -2.809
Polar
3z2-r2-5.618
x2-y24.104
xy-3.485
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.161 -0.407 0.000
y -0.407 7.700 -0.000
z 0.000 -0.000 4.481


<r2> (average value of r2) Å2
<r2> 137.078
(<r2>)1/2 11.708