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

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-283.663713
Energy at 298.15K-283.670489
Nuclear repulsion energy226.936958
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 3433 3109 0.36      
2 A 3395 3074 8.24      
3 A 3278 2968 14.01      
4 A 3249 2942 12.22      
5 A 3186 2885 15.75      
6 A 1807 1637 38.99      
7 A 1700 1539 84.82      
8 A 1605 1454 6.84      
9 A 1593 1442 5.65      
10 A 1537 1392 4.38      
11 A 1500 1358 12.92      
12 A 1373 1243 35.44      
13 A 1310 1186 13.26      
14 A 1164 1054 3.58      
15 A 1144 1036 11.91      
16 A 1110 1005 11.24      
17 A 1096 993 0.06      
18 A 1048 949 13.73      
19 A 1048 949 2.15      
20 A 1006 911 22.93      
21 A 883 800 39.41      
22 A 715 647 3.12      
23 A 703 636 0.84      
24 A 701 635 2.60      
25 A 358 324 2.25      
26 A 278 252 2.12      
27 A 132 120 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 20175.8 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 18269.2 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
0.31943 0.12125 0.08933

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 2.089 0.011 -0.000
H2 2.432 -0.528 -0.877
H3 2.530 0.999 -0.000
H4 2.432 -0.527 0.878
C5 0.604 0.108 -0.000
O6 -0.070 -1.028 0.000
N7 -1.406 -0.773 0.000
C8 -1.522 0.499 -0.000
H9 -2.498 0.940 -0.000
C10 -0.249 1.144 -0.000
H11 -0.028 2.188 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08491.08231.08491.48902.39633.58233.64394.68102.59863.0368
H21.08491.76391.75472.12512.69793.94444.17785.21843.27903.7677
H31.08231.76391.76392.12243.29684.31654.08205.02852.78272.8201
H41.08491.75471.76392.12512.69813.94454.17785.21833.27883.7672
C51.48902.12512.12242.12511.32062.19432.16093.21171.34172.1738
O62.39632.69793.29682.69811.32061.36012.10713.12572.17913.2163
N73.58233.94444.31653.94452.19431.36011.27792.03192.23903.2664
C83.64394.17784.08204.17782.16092.10711.27791.07161.42622.2546
H94.68105.21845.02855.21833.21173.12572.03191.07162.25852.7682
C102.59863.27902.78273.27881.34172.17912.23901.42622.25851.0676
H113.03683.76772.82013.76722.17383.21633.26642.25462.76821.0676

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 116.930 C1 C5 C10 133.204
H2 C1 H3 108.968 H2 C1 H4 107.941
H2 C1 C5 110.322 H3 C1 H4 108.967
H3 C1 C5 110.267 H4 C1 C5 110.323
C5 O6 N7 109.872 C5 C10 C8 102.605
C5 C10 H11 128.557 O6 C5 C10 109.867
O6 N7 C8 105.985 N7 C8 H9 119.462
N7 C8 C10 111.671 C8 C10 H11 128.838
H9 C8 C10 128.867
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 -0.483      
2 H 0.172      
3 H 0.162      
4 H 0.172      
5 C 0.454      
6 O -0.387      
7 N -0.043      
8 C -0.000      
9 H 0.176      
10 C -0.392      
11 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.841 2.743 -0.000 3.304
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.996 -3.862 0.001
y -3.862 -35.430 0.000
z 0.001 0.000 -35.778
Traceless
 xyz
x 4.608 -3.862 0.001
y -3.862 -2.043 0.000
z 0.001 0.000 -2.566
Polar
3z2-r2-5.131
x2-y24.434
xy-3.862
xz0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.730 -0.474 0.000
y -0.474 7.112 -0.000
z 0.000 -0.000 4.249


<r2> (average value of r2) Å2
<r2> 133.090
(<r2>)1/2 11.536