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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-285.307518
Energy at 298.15K-285.313943
Nuclear repulsion energy225.119061
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 B1B95/6-311G*
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 3290 3154 0.67      
2 A 3253 3118 5.29      
3 A 3162 3031 10.38      
4 A 3125 2996 9.93      
5 A 3063 2936 14.71      
6 A 1666 1597 38.01      
7 A 1545 1481 47.04      
8 A 1502 1440 9.36      
9 A 1489 1427 9.94      
10 A 1422 1363 1.53      
11 A 1391 1333 7.95      
12 A 1281 1228 25.36      
13 A 1221 1170 10.17      
14 A 1067 1023 3.58      
15 A 1064 1019 3.35      
16 A 1033 990 11.33      
17 A 1017 975 1.59      
18 A 954 914 7.77      
19 A 924 886 17.12      
20 A 901 864 5.40      
21 A 807 774 39.55      
22 A 667 640 0.37      
23 A 653 626 2.05      
24 A 648 621 0.82      
25 A 331 318 2.27      
26 A 252 242 2.63      
27 A 103 99 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 18915.1 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 18132.0 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 B1B95/6-311G*
ABC
0.31228 0.12015 0.08819

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.093 0.015 -0.000
H2 2.448 -0.524 -0.880
H3 2.538 1.008 -0.001
H4 2.448 -0.523 0.881
C5 0.616 0.111 -0.000
O6 -0.065 -1.044 0.000
N7 -1.421 -0.786 0.000
C8 -1.522 0.513 -0.000
H9 -2.507 0.957 -0.000
C10 -0.258 1.149 0.000
H11 -0.037 2.203 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09161.08831.09161.47952.40353.60393.64894.69532.61043.0534
H21.09161.76901.76092.12922.71333.97684.19685.24623.30143.7930
H31.08831.76901.76902.12043.31414.34614.08955.04482.79962.8384
H41.09161.76091.76902.12922.71363.97714.19675.24613.30113.7925
C51.47952.12922.12042.12921.34052.22592.17583.23591.35742.1914
O62.40352.71333.31412.71361.34051.38032.13223.15682.20083.2462
N73.60393.97684.34613.97712.22591.38031.30282.05322.25683.2929
C83.64894.19684.08954.19672.17582.13221.30281.08041.41422.2488
H94.69535.24625.04485.24613.23593.15682.05321.08042.25662.7659
C102.61043.30142.79963.30111.35742.20082.25681.41422.25661.0768
H113.05343.79302.83843.79252.19143.24623.29292.24882.76591.0768

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 116.837 C1 C5 C10 133.847
H2 C1 H3 108.489 H2 C1 H4 107.531
H2 C1 C5 110.914 H3 C1 H4 108.488
H3 C1 C5 110.403 H4 C1 C5 110.915
C5 O6 N7 109.782 C5 C10 C8 103.432
C5 C10 H11 128.019 O6 C5 C10 109.316
O6 N7 C8 105.210 N7 C8 H9 118.685
N7 C8 C10 112.259 C8 C10 H11 128.549
H9 C8 C10 129.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.701      
2 H 0.252      
3 H 0.242      
4 H 0.252      
5 C 0.334      
6 O -0.222      
7 N -0.137      
8 C -0.014      
9 H 0.226      
10 C -0.447      
11 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.905 2.589 0.000 3.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.183 -3.545 0.000
y -3.545 -35.362 0.000
z 0.000 0.000 -36.032
Traceless
 xyz
x 4.514 -3.545 0.000
y -3.545 -1.754 0.000
z 0.000 0.000 -2.759
Polar
3z2-r2-5.519
x2-y24.179
xy-3.545
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.572 -0.417 0.000
y -0.417 7.431 0.000
z 0.000 0.000 4.378


<r2> (average value of r2) Å2
<r2> 134.509
(<r2>)1/2 11.598