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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: B3LYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-281.732375
Energy at 298.15K-281.738417
Nuclear repulsion energy217.182448
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 B3LYP/STO-3G
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 3526 3146 16.79      
2 A 3486 3111 0.27      
3 A 3479 3105 21.21      
4 A 3458 3086 0.02      
5 A 3306 2951 0.13      
6 A 1680 1499 8.93      
7 A 1659 1480 5.95      
8 A 1646 1469 11.76      
9 A 1567 1398 6.09      
10 A 1542 1376 12.08      
11 A 1448 1292 11.98      
12 A 1348 1203 0.44      
13 A 1193 1064 4.35      
14 A 1142 1019 4.81      
15 A 1121 1000 1.39      
16 A 1083 967 7.98      
17 A 1043 931 3.77      
18 A 1014 905 1.62      
19 A 917 818 2.17      
20 A 902 805 0.35      
21 A 799 713 22.32      
22 A 665 593 3.61      
23 A 645 575 0.76      
24 A 576 514 0.11      
25 A 325 290 3.27      
26 A 269 240 2.77      
27 A 113 101 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 19974.7 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 17825.4 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 B3LYP/STO-3G
ABC
0.28705 0.11190 0.08177

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.181 0.023 0.000
H2 2.572 0.538 0.893
H3 2.548 -1.015 -0.000
H4 2.572 0.539 -0.893
C5 -1.502 0.622 0.000
O6 -1.439 -0.780 -0.000
N7 -0.038 -1.162 -0.000
C8 0.653 0.029 -0.000
C9 -0.240 1.164 0.000
H10 0.035 2.221 0.000
H11 -2.508 1.065 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10291.10061.10293.73173.70802.51531.52852.67663.07234.8032
H21.10291.79231.78614.17134.31523.24012.17723.01563.17235.1841
H31.10061.79231.79234.36843.99392.58982.16373.53844.09735.4667
H41.10291.78611.79234.17134.31533.24042.17723.01543.17195.1840
C53.73174.17134.36844.17131.40332.30852.23501.37372.21821.0986
O63.70804.31523.99394.31531.40331.45272.24242.28393.34352.1315
N72.51533.24012.58983.24042.30851.45271.37652.33523.38443.3257
C81.52852.17722.16372.17722.23502.24241.37651.44432.27793.3258
C92.67663.01563.53843.01541.37372.28392.33521.44431.09232.2701
H103.07233.17234.09733.17192.21823.34353.38442.27791.09232.7937
H114.80325.18415.46675.18401.09862.13153.32573.32582.27012.7937

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 119.871 C1 C8 C9 128.392
H2 C1 H3 108.857 H2 C1 H4 108.136
H2 C1 C8 110.623 H3 C1 H4 108.858
H3 C1 C8 109.695 H4 C1 C8 110.623
C5 O6 N7 107.848 C5 C9 C8 104.931
C5 C9 H10 127.818 O6 C5 C9 110.660
O6 C5 H11 116.316 O6 N7 C8 104.824
N7 C8 C9 111.737 C8 C9 H10 127.251
C9 C5 H11 133.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.224      
2 H 0.090      
3 H 0.098      
4 H 0.090      
5 C 0.008      
6 O -0.068      
7 N -0.126      
8 C 0.055      
9 C -0.124      
10 H 0.095      
11 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.323 2.324 0.000 2.346
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.296 -1.474 -0.000
y -1.474 -34.003 0.000
z -0.000 0.000 -32.784
Traceless
 xyz
x 5.097 -1.474 -0.000
y -1.474 -3.462 0.000
z -0.000 0.000 -1.635
Polar
3z2-r2-3.270
x2-y25.706
xy-1.474
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.101 -0.160 0.000
y -0.160 4.482 0.000
z 0.000 0.000 1.602


<r2> (average value of r2) Å2
<r2> 141.418
(<r2>)1/2 11.892