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

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-283.692642
Energy at 298.15K-283.699415
Nuclear repulsion energy226.837710
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/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 3439 3111 1.01      
2 A 3411 3085 10.46      
3 A 3286 2972 20.77      
4 A 3260 2948 18.32      
5 A 3202 2896 19.91      
6 A 1807 1635 40.19      
7 A 1705 1542 88.05      
8 A 1621 1466 7.79      
9 A 1610 1456 7.64      
10 A 1549 1401 4.86      
11 A 1505 1361 13.07      
12 A 1377 1245 39.44      
13 A 1316 1190 14.21      
14 A 1173 1061 3.11      
15 A 1148 1038 10.67      
16 A 1115 1008 12.45      
17 A 1099 994 0.06      
18 A 1055 954 17.74      
19 A 1034 936 3.07      
20 A 1010 914 23.25      
21 A 887 803 50.00      
22 A 713 645 2.75      
23 A 703 636 0.84      
24 A 700 633 1.89      
25 A 359 324 2.71      
26 A 277 250 3.05      
27 A 132 119 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 20245.3 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 18309.8 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/6-311G*
ABC
0.31961 0.12101 0.08921

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.091 0.010 0.000
H2 2.433 -0.528 -0.876
H3 2.536 0.996 -0.000
H4 2.433 -0.528 0.877
C5 0.606 0.109 -0.000
O6 -0.071 -1.027 -0.000
N7 -1.407 -0.774 0.000
C8 -1.523 0.499 0.000
H9 -2.501 0.937 0.000
C10 -0.250 1.144 -0.000
H11 -0.030 2.189 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08371.08141.08371.48862.39823.58493.64724.68472.60143.0415
H21.08371.76101.75272.12412.69943.94634.18015.22103.28073.7714
H31.08141.76101.76102.12383.29964.32154.08905.03692.78952.8299
H41.08371.75271.76102.12412.69973.94644.18005.22083.28053.7709
C51.48862.12412.12382.12411.32242.19792.16443.21531.34322.1758
O62.39822.69943.29962.69971.32241.35972.10633.12422.17853.2169
N73.58493.94634.32153.94642.19791.35971.27772.03032.23973.2674
C83.64724.18014.08904.18002.16442.10631.27771.07151.42732.2554
H94.68475.22105.03695.22083.21533.12422.03031.07152.26052.7701
C102.60143.28072.78953.28051.34322.17852.23971.42732.26051.0683
H113.04153.77142.82993.77092.17583.21693.26742.25542.77011.0683

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 116.993 C1 C5 C10 133.387
H2 C1 H3 108.855 H2 C1 H4 107.930
H2 C1 C5 110.341 H3 C1 H4 108.853
H3 C1 C5 110.460 H4 C1 C5 110.340
C5 O6 N7 110.055 C5 C10 C8 102.706
C5 C10 H11 128.549 O6 C5 C10 109.620
O6 N7 C8 105.952 N7 C8 H9 119.337
N7 C8 C10 111.667 C8 C10 H11 128.745
H9 C8 C10 128.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.663 -0.482   -0.715
2 H 0.247 0.136   0.198
3 H 0.235 0.151   0.212
4 H 0.247 0.136   0.198
5 C 0.435 0.557   0.620
6 O -0.315 -0.135   -0.120
7 N -0.149 -0.451   -0.447
8 C 0.043 0.405   0.357
9 H 0.244 0.065   0.098
10 C -0.553 -0.586   -0.640
11 H 0.228 0.204   0.239


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.870 2.854 0.000 3.413
CHELPG        
AIM        
ESP 1.850 2.841 0.001 3.390


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.240 -3.936 0.000
y -3.936 -36.100 0.001
z 0.000 0.001 -36.462
Traceless
 xyz
x 5.041 -3.936 0.000
y -3.936 -2.249 0.001
z 0.000 0.001 -2.792
Polar
3z2-r2-5.584
x2-y24.860
xy-3.936
xz0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.630 -0.534 0.000
y -0.534 7.153 -0.000
z 0.000 -0.000 4.242


<r2> (average value of r2) Å2
<r2> 133.571
(<r2>)1/2 11.557