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

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-283.633927
Energy at 298.15K-283.640681
HF Energy-283.633927
Nuclear repulsion energy226.523711
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/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 3467 3115 0.24      
2 A 3439 3090 8.71      
3 A 3310 2974 15.68      
4 A 3284 2951 13.25      
5 A 3222 2895 16.36      
6 A 1822 1637 37.53      
7 A 1714 1540 83.70      
8 A 1631 1465 7.00      
9 A 1619 1455 5.90      
10 A 1564 1405 4.61      
11 A 1513 1360 12.96      
12 A 1384 1244 34.74      
13 A 1323 1189 13.73      
14 A 1177 1058 4.14      
15 A 1151 1034 9.83      
16 A 1120 1006 10.33      
17 A 1104 992 0.85      
18 A 1052 945 19.47      
19 A 1045 939 2.19      
20 A 1008 906 21.83      
21 A 889 799 46.13      
22 A 713 640 4.35      
23 A 705 634 0.93      
24 A 698 627 1.51      
25 A 359 322 2.59      
26 A 276 248 2.46      
27 A 131 118 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 20360.0 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 18293.4 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 HF/6-31G*
ABC
0.31858 0.12073 0.08899

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.094 0.010 -0.000
H2 2.435 -0.528 -0.877
H3 2.536 0.998 -0.001
H4 2.435 -0.527 0.877
C5 0.607 0.110 -0.000
O6 -0.069 -1.029 0.000
N7 -1.411 -0.776 -0.000
C8 -1.523 0.500 -0.000
H9 -2.499 0.942 -0.000
C10 -0.251 1.145 0.000
H11 -0.034 2.191 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08431.08191.08431.49012.40013.59153.64984.68632.60473.0461
H21.08431.76251.75392.12592.70073.95244.18285.22303.28413.7760
H31.08191.76251.76252.12393.30144.32724.08995.03582.79142.8334
H41.08431.75391.76252.12592.70103.95274.18275.22293.28373.7754
C51.49012.12592.12392.12591.32492.20342.16543.21551.34422.1772
O62.40012.70073.30142.70101.32491.36502.11003.12882.18153.2203
N73.59153.95244.32723.95272.20341.36501.28072.03352.24333.2706
C83.64984.18284.08994.18272.16542.11001.28071.07141.42602.2533
H94.68635.22305.03585.22293.21553.12882.03351.07142.25712.7638
C102.60473.28412.79143.28371.34422.18152.24331.42602.25711.0685
H113.04613.77602.83343.77542.17723.22033.27062.25332.76381.0685

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 116.868 C1 C5 C10 133.495
H2 C1 H3 108.911 H2 C1 H4 107.956
H2 C1 C5 110.340 H3 C1 H4 108.910
H3 C1 C5 110.328 H4 C1 C5 110.339
C5 O6 N7 109.988 C5 C10 C8 102.793
C5 C10 H11 128.581 O6 C5 C10 109.637
O6 N7 C8 105.744 N7 C8 H9 119.397
N7 C8 C10 111.838 C8 C10 H11 128.626
H9 C8 C10 128.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.530      
2 H 0.205      
3 H 0.191      
4 H 0.205      
5 C 0.458      
6 O -0.476      
7 N -0.141      
8 C 0.049      
9 H 0.227      
10 C -0.410      
11 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.853 2.887 0.000 3.430
CHELPG 1.809 2.855 0.001 3.380
AIM        
ESP 1.826 2.868 0.001 3.400


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.067 -3.930 -0.001
y -3.930 -35.908 0.000
z -0.001 0.000 -36.114
Traceless
 xyz
x 4.944 -3.930 -0.001
y -3.930 -2.317 0.000
z -0.001 0.000 -2.627
Polar
3z2-r2-5.254
x2-y24.841
xy-3.930
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.371 -0.515 0.000
y -0.515 6.948 0.001
z 0.000 0.001 3.768


<r2> (average value of r2) Å2
<r2> 133.684
(<r2>)1/2 11.562