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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-43.521841
Energy at 298.15K 
HF Energy-43.521841
Nuclear repulsion energy84.707900
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/CEP-121G*
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' 3458 3124 1.41 110.84 0.12 0.22
2 A' 3437 3105 1.32 37.99 0.75 0.86
3 A' 3419 3089 5.92 89.28 0.42 0.59
4 A' 1764 1594 24.06 2.51 0.75 0.86
5 A' 1602 1448 54.64 47.29 0.18 0.31
6 A' 1520 1373 19.14 2.85 0.75 0.86
7 A' 1366 1234 11.65 11.97 0.29 0.45
8 A' 1263 1141 25.43 4.81 0.21 0.35
9 A' 1206 1090 14.04 15.23 0.31 0.47
10 A' 1100 994 3.00 1.94 0.12 0.21
11 A' 1045 944 66.80 5.02 0.17 0.30
12 A' 997 901 7.61 5.06 0.75 0.86
13 A' 983 888 0.62 1.57 0.50 0.67
14 A" 1032 932 5.05 2.65 0.75 0.86
15 A" 1016 918 0.08 1.08 0.75 0.86
16 A" 866 782 77.18 0.39 0.75 0.86
17 A" 690 623 3.83 0.13 0.75 0.86
18 A" 633 572 18.84 1.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13698.9 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 12375.6 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/CEP-121G*
ABC
0.33536 0.32419 0.16484

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.124 0.373 0.000
C2 0.599 -0.966 0.000
C3 0.000 1.116 0.000
N4 -0.688 -0.974 0.000
O5 -1.077 0.338 0.000
H6 2.144 0.697 0.000
H7 1.131 -1.898 0.000
H8 -0.179 2.173 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43801.34732.25802.20131.07042.27152.2221
C21.43802.16631.28722.12362.26961.07363.2340
C31.34732.16632.20061.32862.18483.21961.0723
N42.25801.28722.20061.36893.28842.04023.1886
O52.20132.12361.32861.36893.24113.14282.0433
H61.07042.26962.18483.28843.24112.78612.7524
H72.27151.07363.21962.04023.14282.78614.2772
H82.22213.23401.07233.18862.04332.75244.2772

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.784 C1 C2 H7 128.909
C1 C3 O5 110.697 C1 C3 H8 133.054
C2 C1 C3 102.061 C2 C1 H6 129.012
C2 N4 O5 106.134 C3 C1 H6 128.928
C3 O5 N4 109.325 N4 C2 H7 119.308
O5 C3 H8 116.248
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.096      
2 C -0.312      
3 C -0.145      
4 N 0.039      
5 O -0.210      
6 H 0.261      
7 H 0.228      
8 H 0.235      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.886 1.561 0.000 3.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.849 -2.911 0.000
y -2.911 -24.576 0.000
z 0.000 0.000 -30.448
Traceless
 xyz
x -1.337 -2.911 0.000
y -2.911 5.072 0.000
z 0.000 0.000 -3.735
Polar
3z2-r2-7.469
x2-y2-4.273
xy-2.911
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.196 -0.366 0.000
y -0.366 6.444 0.000
z 0.000 0.000 3.312


<r2> (average value of r2) Å2
<r2> 62.701
(<r2>)1/2 7.918