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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-285.258804
Energy at 298.15K-285.265199
Nuclear repulsion energy224.160116
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 B3PW91/6-31G**
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 3302 3164 0.14      
2 A 3263 3127 3.38      
3 A 3171 3039 6.65      
4 A 3134 3003 6.71      
5 A 3065 2937 13.05      
6 A 1663 1593 34.91      
7 A 1543 1479 44.68      
8 A 1495 1433 8.30      
9 A 1481 1419 8.14      
10 A 1418 1359 1.21      
11 A 1388 1331 7.56      
12 A 1282 1229 21.18      
13 A 1222 1171 9.51      
14 A 1065 1020 2.76      
15 A 1064 1019 4.83      
16 A 1030 987 12.36      
17 A 1015 973 1.09      
18 A 952 913 6.80      
19 A 925 886 15.80      
20 A 906 869 4.59      
21 A 804 771 33.61      
22 A 667 639 0.35      
23 A 651 624 2.79      
24 A 646 619 0.64      
25 A 335 321 2.27      
26 A 252 242 2.14      
27 A 91 87 0.82      

Unscaled Zero Point Vibrational Energy (zpe) 18913.4 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 18126.6 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 B3PW91/6-31G**
ABC
0.30940 0.11918 0.08744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.102 0.015 -0.000
H2 -2.458 -0.525 0.883
H3 -2.544 1.012 -0.000
H4 -2.457 -0.525 -0.883
C5 -0.620 0.112 -0.000
O6 0.065 -1.048 0.000
N7 1.428 -0.790 -0.000
C8 1.527 0.517 -0.000
H9 2.512 0.966 0.000
C10 0.260 1.154 0.000
H11 0.037 2.210 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09471.09131.09471.48522.41323.62053.66334.71102.62183.0647
H21.09471.77511.76682.13632.72343.99384.21235.26343.31393.8055
H31.09131.77511.77512.12523.32474.36254.10175.05712.80802.8460
H41.09471.76681.77512.13622.72323.99354.21225.26333.31403.8056
C51.48522.13632.12522.13621.34662.23762.18463.24641.36362.1984
O62.41322.72343.32472.72321.34661.38752.14173.16972.21043.2578
N73.62053.99384.36253.99352.23761.38751.31062.06392.26793.3065
C83.66334.21234.10174.21222.18462.14171.31061.08281.41832.2551
H94.71105.26345.05715.26333.24643.16972.06391.08282.26022.7699
C102.62183.31392.80803.31401.36362.21042.26791.41832.26021.0791
H113.06473.80552.84603.80562.19843.25783.30652.25512.76991.0791

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 116.812 C1 C5 C10 133.902
H2 C1 H3 108.584 H2 C1 H4 107.603
H2 C1 C5 110.890 H3 C1 H4 108.588
H3 C1 C5 110.204 H4 C1 C5 110.884
C5 O6 N7 109.838 C5 C10 C8 103.479
C5 C10 H11 127.932 O6 C5 C10 109.286
O6 N7 C8 105.041 N7 C8 H9 118.847
N7 C8 C10 112.356 C8 C10 H11 128.589
H9 C8 C10 128.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.450      
2 H 0.170      
3 H 0.155      
4 H 0.170      
5 C 0.378      
6 O -0.361      
7 N -0.170      
8 C 0.079      
9 H 0.151      
10 C -0.260      
11 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.950 2.561 -0.000 3.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.727 3.550 0.000
y 3.550 -34.936 -0.000
z 0.000 -0.000 -35.512
Traceless
 xyz
x 4.497 3.550 0.000
y 3.550 -1.817 -0.000
z 0.000 -0.000 -2.680
Polar
3z2-r2-5.361
x2-y24.210
xy3.550
xz0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 135.220
(<r2>)1/2 11.628