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

using model chemistry: HF/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-283.661840
Energy at 298.15K-283.668650
Nuclear repulsion energy226.229228
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(2df,p)
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 3437 3112 2.06      
2 A 3411 3088 0.78      
3 A 3283 2973 10.35      
4 A 3239 2933 19.74      
5 A 3181 2881 18.69      
6 A 1812 1641 39.67      
7 A 1650 1494 17.74      
8 A 1604 1453 10.10      
9 A 1600 1449 6.01      
10 A 1570 1422 61.06      
11 A 1530 1385 6.90      
12 A 1401 1268 8.54      
13 A 1270 1150 19.66      
14 A 1187 1075 7.24      
15 A 1162 1052 2.60      
16 A 1126 1020 4.87      
17 A 1063 963 38.59      
18 A 1044 946 3.79      
19 A 1038 939 0.86      
20 A 995 901 9.89      
21 A 877 794 40.47      
22 A 732 662 1.54      
23 A 701 635 8.55      
24 A 655 593 7.03      
25 A 359 325 7.28      
26 A 302 273 4.48      
27 A 147 133 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 20187.4 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 18279.7 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 HF/6-31G(2df,p)
ABC
0.31509 0.11971 0.08815

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.119 0.028 0.000
H2 2.496 0.546 0.877
H3 2.497 -0.985 0.000
H4 2.496 0.546 -0.877
C5 -1.470 0.552 0.000
O6 -1.350 -0.758 0.000
N7 -0.029 -1.083 -0.000
C8 0.624 0.018 0.000
C9 -0.270 1.139 -0.000
H10 -0.035 2.181 -0.000
H11 -2.468 0.937 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08541.08181.08543.62723.55732.41911.49492.63503.04524.6767
H21.08541.76421.75374.06154.15443.13032.13282.96183.13805.0560
H31.08181.76421.76424.25473.85412.52862.12483.48894.05415.3248
H41.08541.75371.76424.06164.15443.13012.13282.96173.13795.0561
C53.62724.06154.25474.06161.31542.17912.16131.33582.17091.0701
O63.55734.15443.85414.15441.31541.36012.12162.18303.21972.0311
N72.41913.13032.52863.13012.17911.36011.28082.23533.26393.1671
C81.49492.13282.12482.13282.16132.12161.28081.43412.26083.2263
C92.63502.96183.48892.96171.33582.18302.23531.43411.06792.2072
H103.04523.13804.05413.13792.17093.21973.26392.26081.06792.7325
H114.67675.05605.32485.05611.07012.03113.16713.22632.20722.7325

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 121.082 C1 C8 C9 128.209
H2 C1 H3 108.980 H2 C1 H4 107.772
H2 C1 C8 110.493 H3 C1 H4 108.980
H3 C1 C8 110.068 H4 C1 C8 110.493
C5 O6 N7 109.059 C5 C9 C8 102.516
C5 C9 H10 128.813 O6 C5 C9 110.848
O6 C5 H11 116.355 O6 N7 C8 106.868
N7 C8 C9 110.710 C8 C9 H10 128.671
C9 C5 H11 132.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.487      
2 H 0.156      
3 H 0.177      
4 H 0.156      
5 C 0.164      
6 O -0.354      
7 N -0.077      
8 C 0.283      
9 C -0.381      
10 H 0.172      
11 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.521 3.108 0.001 3.151
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.139 -2.173 -0.001
y -2.173 -36.326 -0.001
z -0.001 -0.001 -35.853
Traceless
 xyz
x 6.951 -2.173 -0.001
y -2.173 -3.830 -0.001
z -0.001 -0.001 -3.121
Polar
3z2-r2-6.241
x2-y27.187
xy-2.173
xz-0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.701 0.084 -0.000
y 0.084 6.947 0.000
z -0.000 0.000 4.265


<r2> (average value of r2) Å2
<r2> 134.327
(<r2>)1/2 11.590