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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-245.758084
Energy at 298.15K 
HF Energy-245.758084
Nuclear repulsion energy160.751660
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 PBEPBE/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' 3235 3189 0.12 117.39 0.10 0.19
2 A' 3211 3165 0.13 59.51 0.66 0.79
3 A' 3190 3144 1.84 93.62 0.39 0.56
4 A' 1563 1540 6.66 2.07 0.08 0.15
5 A' 1440 1419 26.76 23.68 0.38 0.55
6 A' 1368 1348 3.20 2.78 0.12 0.21
7 A' 1212 1195 4.91 12.09 0.23 0.38
8 A' 1124 1108 17.95 4.45 0.70 0.82
9 A' 1106 1090 5.39 9.41 0.13 0.23
10 A' 1026 1011 8.10 5.14 0.72 0.83
11 A' 900 887 6.93 3.13 0.57 0.73
12 A' 890 877 0.72 2.25 0.65 0.79
13 A' 850 838 21.67 5.49 0.15 0.26
14 A" 858 846 5.94 2.56 0.75 0.86
15 A" 812 800 0.17 0.39 0.75 0.86
16 A" 751 741 49.28 1.65 0.75 0.86
17 A" 629 620 1.61 0.52 0.75 0.86
18 A" 592 583 12.52 1.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12378.2 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 12201.2 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 PBEPBE/6-31G*
ABC
0.32213 0.31617 0.15956

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.135 0.369 0.000
C2 0.624 -0.962 0.000
C3 0.000 1.134 0.000
N4 -0.700 -1.003 0.000
O5 -1.102 0.347 0.000
H6 2.172 0.698 0.000
H7 1.175 -1.904 0.000
H8 -0.190 2.206 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42531.36912.29072.23751.08742.27292.2656
C21.42532.18661.32452.16622.26961.09123.2709
C31.36912.18662.24791.35402.21483.25691.0891
N42.29071.32452.24791.40813.33732.08003.2488
O52.23752.16621.35401.40813.29243.20162.0709
H61.08742.26962.21483.33733.29242.78682.8018
H72.27291.09123.25692.08003.20162.78684.3307
H82.26563.27091.08913.24882.07092.80184.3307

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.778 C1 C2 H7 128.671
C1 C3 O5 110.497 C1 C3 H8 134.019
C2 C1 C3 102.955 C2 C1 H6 128.677
C2 N4 O5 104.842 C3 C1 H6 128.368
C3 O5 N4 108.928 N4 C2 H7 118.551
O5 C3 H8 115.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236      
2 C 0.033      
3 C 0.120      
4 N -0.156      
5 O -0.281      
6 H 0.163      
7 H 0.175      
8 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.420 1.487 0.000 2.840
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.954 -2.430 0.000
y -2.430 -24.680 0.000
z 0.000 0.000 -29.591
Traceless
 xyz
x -0.819 -2.430 0.000
y -2.430 4.093 0.000
z 0.000 0.000 -3.274
Polar
3z2-r2-6.549
x2-y2-3.274
xy-2.430
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.116 -0.208 0.000
y -0.208 6.865 0.000
z 0.000 0.000 2.476


<r2> (average value of r2) Å2
<r2> 77.520
(<r2>)1/2 8.805