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

using model chemistry: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-283.647290
Energy at 298.15K-283.653611
HF Energy-283.647290
Nuclear repulsion energy220.876811
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 M06-2X/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 3324 3148 2.42      
2 A 3254 3083 1.19      
3 A 3140 2975 1.67      
4 A 3132 2967 1.56      
5 A 3063 2901 2.41      
6 A 1656 1569 35.93      
7 A 1550 1468 18.08      
8 A 1533 1452 10.58      
9 A 1486 1408 26.85      
10 A 1473 1395 5.10      
11 A 1369 1297 9.29      
12 A 1248 1183 23.02      
13 A 1230 1165 13.34      
14 A 1124 1064 12.47      
15 A 1061 1005 6.57      
16 A 1052 996 2.88      
17 A 986 934 5.45      
18 A 963 912 0.68      
19 A 945 896 5.22      
20 A 892 845 11.80      
21 A 876 829 53.24      
22 A 670 635 1.19      
23 A 661 626 0.65      
24 A 625 592 1.27      
25 A 323 305 2.76      
26 A 249 235 4.69      
27 A 47 44 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 18964.8 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 17963.4 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 M06-2X/3-21G*
ABC
0.30211 0.11571 0.08500

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.124 0.014 -0.000
H2 2.470 -0.528 -0.886
H3 2.555 1.016 -0.000
H4 2.470 -0.527 0.886
C5 0.636 0.101 -0.000
O6 -0.066 -1.087 -0.000
N7 -1.498 -0.771 0.001
C8 -1.530 0.549 -0.000
H9 -2.486 1.046 -0.001
C10 -0.230 1.150 0.000
H11 0.008 2.198 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09431.09121.09431.49082.45123.70643.69364.72452.61383.0411
H21.09431.78221.77152.13152.74354.07304.23635.27473.29983.7784
H31.09121.78221.78222.12653.36064.43014.11235.04162.78832.8082
H41.09431.77151.78222.13152.74384.07294.23655.27493.29963.7781
C51.49082.13152.12652.13151.37942.30532.21233.26201.36032.1890
O62.45122.74353.36062.74381.37941.46642.19563.22572.24273.2851
N73.70644.07304.43014.07292.30531.46641.32092.06852.30223.3290
C83.69364.23634.11234.23652.21232.19561.32091.07711.43272.2546
H94.72455.27475.04165.27493.26203.22572.06851.07712.25882.7469
C102.61383.29982.78833.29961.36032.24272.30221.43272.25881.0742
H113.04113.77842.80823.77812.18903.28513.32902.25462.74691.0742

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 117.248 C1 C5 C10 132.867
H2 C1 H3 109.265 H2 C1 H4 108.078
H2 C1 C5 110.134 H3 C1 H4 109.264
H3 C1 C5 109.930 H4 C1 C5 110.135
C5 O6 N7 108.170 C5 C10 C8 104.731
C5 C10 H11 127.702 O6 C5 C10 109.885
O6 N7 C8 103.822 N7 C8 H9 118.868
N7 C8 C10 113.392 C8 C10 H11 127.567
H9 C8 C10 127.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.621      
2 H 0.246      
3 H 0.225      
4 H 0.246      
5 C 0.353      
6 O -0.407      
7 N -0.209      
8 C 0.045      
9 H 0.257      
10 C -0.356      
11 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.933 2.972 -0.001 3.545
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.712 -3.891 0.002
y -3.891 -36.035 0.001
z 0.002 0.001 -36.615
Traceless
 xyz
x 5.614 -3.891 0.002
y -3.891 -2.372 0.001
z 0.002 0.001 -3.242
Polar
3z2-r2-6.483
x2-y25.324
xy-3.891
xz0.002
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.613 -0.462 0.000
y -0.462 6.646 -0.001
z 0.000 -0.001 3.116


<r2> (average value of r2) Å2
<r2> 138.546
(<r2>)1/2 11.771