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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-283.642618
Energy at 298.15K-283.649383
Nuclear repulsion energy226.547889
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/6-31G**
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 3450 3114 0.21      
2 A 3416 3083 8.37      
3 A 3294 2973 15.00      
4 A 3268 2950 13.14      
5 A 3202 2890 16.26      
6 A 1820 1643 38.13      
7 A 1713 1546 86.20      
8 A 1615 1458 6.29      
9 A 1602 1446 6.07      
10 A 1549 1398 4.28      
11 A 1509 1362 13.21      
12 A 1381 1247 36.02      
13 A 1320 1192 12.87      
14 A 1168 1055 4.40      
15 A 1148 1036 10.47      
16 A 1117 1008 11.70      
17 A 1103 995 0.33      
18 A 1049 947 17.38      
19 A 1046 944 2.34      
20 A 1007 909 22.20      
21 A 890 803 45.26      
22 A 712 643 4.11      
23 A 705 636 0.91      
24 A 698 630 1.53      
25 A 359 324 2.71      
26 A 277 250 2.51      
27 A 130 117 0.98      

Unscaled Zero Point Vibrational Energy (zpe) 20273.9 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 18299.2 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 HF/6-31G**
ABC
0.31857 0.12079 0.08902

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.093 0.011 0.000
H2 2.434 -0.529 -0.877
H3 2.535 0.998 -0.001
H4 2.434 -0.527 0.878
C5 0.607 0.110 -0.000
O6 -0.069 -1.029 -0.000
N7 -1.410 -0.776 0.000
C8 -1.523 0.500 0.000
H9 -2.499 0.942 0.000
C10 -0.251 1.145 -0.000
H11 -0.033 2.191 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08441.08191.08441.48952.39943.59063.64914.68612.60423.0449
H21.08441.76321.75452.12472.69923.95084.18155.22223.28313.7747
H31.08191.76321.76322.12303.30054.32594.08865.03492.79022.8313
H41.08441.75451.76322.12472.69973.95104.18135.22193.28273.7739
C51.48952.12472.12302.12471.32472.20312.16543.21601.34432.1768
O62.39942.69923.30052.69971.32471.36492.11003.12932.18153.2200
N73.59063.95084.32593.95102.20311.36491.28072.03412.24313.2705
C83.64914.18154.08864.18132.16542.11001.28071.07191.42582.2536
H94.68615.22225.03495.22193.21603.12932.03411.07192.25732.7645
C102.60423.28312.79023.28271.34432.18152.24311.42582.25731.0685
H113.04493.77472.83133.77392.17683.22003.27052.25362.76451.0685

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 116.874 C1 C5 C10 133.491
H2 C1 H3 108.965 H2 C1 H4 107.993
H2 C1 C5 110.288 H3 C1 H4 108.963
H3 C1 C5 110.293 H4 C1 C5 110.287
C5 O6 N7 109.989 C5 C10 C8 102.794
C5 C10 H11 128.534 O6 C5 C10 109.635
O6 N7 C8 105.751 N7 C8 H9 119.410
N7 C8 C10 111.830 C8 C10 H11 128.672
H9 C8 C10 128.759
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.368 -0.452    
2 H 0.157 0.132    
3 H 0.141 0.143    
4 H 0.157 0.132    
5 C 0.432 0.532    
6 O -0.477 -0.142    
7 N -0.149 -0.440    
8 C 0.110 0.392    
9 H 0.176 0.066    
10 C -0.349 -0.557    
11 H 0.168 0.195    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.875 2.882 0.000 3.438
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.961 -3.942 0.000
y -3.942 -35.906 0.001
z 0.000 0.001 -36.089
Traceless
 xyz
x 5.037 -3.942 0.000
y -3.942 -2.381 0.001
z 0.000 0.001 -2.656
Polar
3z2-r2-5.311
x2-y24.945
xy-3.942
xz0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.446 -0.519 0.000
y -0.519 7.002 -0.000
z 0.000 -0.000 3.822


<r2> (average value of r2) Å2
<r2> 133.615
(<r2>)1/2 11.559