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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-283.745737
Energy at 298.15K-283.752532
HF Energy-283.745737
Nuclear repulsion energy227.119944
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3425 3105 0.32      
2 A 3388 3071 6.75      
3 A 3267 2961 14.73      
4 A 3238 2935 11.90      
5 A 3181 2883 15.83      
6 A 1795 1627 42.89      
7 A 1695 1536 94.66      
8 A 1605 1455 8.10      
9 A 1594 1444 6.86      
10 A 1538 1394 4.37      
11 A 1496 1356 13.00      
12 A 1373 1244 39.19      
13 A 1310 1188 13.65      
14 A 1166 1057 2.37      
15 A 1139 1032 11.69      
16 A 1108 1004 11.57      
17 A 1093 991 0.10      
18 A 1049 951 3.71      
19 A 1045 947 15.58      
20 A 1006 912 23.14      
21 A 885 803 51.05      
22 A 714 647 0.91      
23 A 702 636 0.65      
24 A 700 635 2.94      
25 A 362 328 2.55      
26 A 278 252 2.69      
27 A 140 127 0.88      

Unscaled Zero Point Vibrational Energy (zpe) 20145.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 18259.9 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/Def2TZVPP
ABC
0.32051 0.12131 0.08945

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.089 0.007 0.000
H2 2.426 -0.531 -0.876
H3 2.533 0.992 -0.000
H4 2.426 -0.531 0.876
C5 0.609 0.109 -0.000
O6 -0.071 -1.023 0.000
N7 -1.417 -0.769 -0.000
C8 -1.514 0.501 0.000
H9 -2.488 0.942 0.000
C10 -0.248 1.135 -0.000
H11 -0.024 2.177 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08211.08041.08211.48322.39273.59063.63624.67092.59463.0281
H21.08211.76001.75222.11642.69153.94884.16615.20413.27023.7552
H31.08041.76001.76002.11713.29264.32524.07685.02152.78512.8184
H41.08211.75221.76002.11642.69183.94894.16605.20393.27003.7549
C51.48322.11642.11712.11641.32062.20842.15873.20671.33662.1620
O62.39272.69153.29262.69181.32061.36962.09873.11432.16503.1997
N73.59063.94884.32523.94892.20841.36961.27452.01842.23473.2589
C83.63624.16614.07684.16602.15872.09871.27451.06881.41562.2420
H94.67095.20415.02155.20393.20673.11432.01841.06882.24822.7563
C102.59463.27022.78513.27001.33662.16502.23471.41562.24821.0654
H113.02813.75522.81843.75492.16203.19973.25892.24202.75631.0654

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 117.043 C1 C5 C10 133.829
H2 C1 H3 108.954 H2 C1 H4 108.123
H2 C1 C5 110.202 H3 C1 H4 108.953
H3 C1 C5 110.357 H4 C1 C5 110.202
C5 O6 N7 110.338 C5 C10 C8 103.286
C5 C10 H11 127.977 O6 C5 C10 109.128
O6 N7 C8 105.013 N7 C8 H9 118.670
N7 C8 C10 112.236 C8 C10 H11 128.737
H9 C8 C10 129.094
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.177      
2 H 0.087      
3 H 0.078      
4 H 0.087      
5 C 0.271      
6 O -0.232      
7 N -0.190      
8 C 0.102      
9 H 0.100      
10 C -0.222      
11 H 0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.927 2.764 -0.001 3.370
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.361 -4.022 0.001
y -4.022 -35.995 0.000
z 0.001 0.000 -36.396
Traceless
 xyz
x 4.835 -4.022 0.001
y -4.022 -2.116 0.000
z 0.001 0.000 -2.718
Polar
3z2-r2-5.436
x2-y24.634
xy-4.022
xz0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.331 -0.439 0.000
y -0.439 7.730 -0.000
z 0.000 -0.000 5.286


<r2> (average value of r2) Å2
<r2> 133.250
(<r2>)1/2 11.543