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

using model chemistry: B3LYP/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 B3LYP/6-311G*
 hartrees
Energy at 0K-285.424895
Energy at 298.15K-285.431287
Nuclear repulsion energy223.833294
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/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 3266 3156 1.11      
2 A 3232 3123 5.37      
3 A 3131 3025 12.63      
4 A 3094 2990 12.35      
5 A 3043 2941 16.72      
6 A 1642 1587 34.87      
7 A 1520 1469 44.12      
8 A 1505 1454 13.31      
9 A 1493 1443 9.45      
10 A 1430 1382 0.79      
11 A 1376 1330 6.90      
12 A 1258 1216 26.64      
13 A 1216 1175 9.41      
14 A 1075 1039 3.32      
15 A 1056 1020 4.59      
16 A 1030 995 7.25      
17 A 1003 969 2.44      
18 A 943 911 9.67      
19 A 898 868 5.01      
20 A 892 862 16.72      
21 A 804 776 39.25      
22 A 661 638 0.31      
23 A 653 631 1.97      
24 A 640 619 1.26      
25 A 335 323 2.25      
26 A 250 241 2.48      
27 A 100 96 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 18771.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 18138.7 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/6-311G*
ABC
0.30981 0.11857 0.08714

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.105 0.015 0.000
H2 2.462 -0.525 -0.881
H3 2.551 1.010 -0.001
H4 2.462 -0.524 0.882
C5 0.621 0.110 -0.000
O6 -0.064 -1.052 -0.000
N7 -1.438 -0.785 0.000
C8 -1.529 0.519 0.000
H9 -2.512 0.970 0.000
C10 -0.256 1.151 -0.000
H11 -0.032 2.206 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09341.09031.09341.48742.41733.63293.66914.71532.62043.0608
H21.09341.77181.76322.13772.72674.00744.21865.26853.31283.8021
H31.09031.77181.77182.12993.33004.37494.10985.06372.81092.8469
H41.09341.76321.77182.13762.72734.00754.21835.26813.31233.8013
C51.48742.13772.12992.13761.34822.24532.18863.24911.36142.1954
O62.41732.72673.33002.72731.34821.40012.14773.17512.21093.2574
N73.63294.00744.37494.00752.24531.40011.30692.05742.26853.3047
C83.66914.21864.10984.21832.18862.14771.30691.08171.42132.2552
H94.71535.26855.06375.26813.24913.17512.05741.08172.26342.7707
C102.62043.31282.81093.31231.36142.21092.26851.42132.26341.0782
H113.06083.80212.84693.80132.19543.25743.30472.25522.77071.0782

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 116.878 C1 C5 C10 133.758
H2 C1 H3 108.461 H2 C1 H4 107.470
H2 C1 C5 110.926 H3 C1 H4 108.463
H3 C1 C5 110.495 H4 C1 C5 110.921
C5 O6 N7 109.552 C5 C10 C8 103.697
C5 C10 H11 127.915 O6 C5 C10 109.364
O6 N7 C8 104.955 N7 C8 H9 118.627
N7 C8 C10 112.432 C8 C10 H11 128.388
H9 C8 C10 128.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.669     -0.711
2 H 0.241     0.195
3 H 0.231     0.207
4 H 0.241     0.195
5 C 0.330     0.596
6 O -0.229     -0.109
7 N -0.128     -0.397
8 C -0.023     0.298
9 H 0.219     0.096
10 C -0.417     -0.598
11 H 0.206     0.227


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.890 2.643 0.000 3.249
CHELPG        
AIM        
ESP 1.875 2.624 0.000 3.225


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.538 -3.609 0.000
y -3.609 -35.772 -0.000
z 0.000 -0.000 -36.271
Traceless
 xyz
x 4.483 -3.609 0.000
y -3.609 -1.867 -0.000
z 0.000 -0.000 -2.616
Polar
3z2-r2-5.233
x2-y24.234
xy-3.609
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.694 -0.436 0.000
y -0.436 7.495 -0.001
z 0.000 -0.001 4.390


<r2> (average value of r2) Å2
<r2> 136.084
(<r2>)1/2 11.665