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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-245.811800
Energy at 298.15K 
HF Energy-245.811800
Nuclear repulsion energy163.040462
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 PBE1PBE/6-311G*
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' 3309 3172 0.17 111.51 0.12 0.22
2 A' 3286 3149 0.08 47.99 0.70 0.83
3 A' 3265 3129 2.08 86.29 0.41 0.58
4 A' 1630 1563 9.66 1.30 0.13 0.23
5 A' 1498 1436 33.57 31.14 0.28 0.44
6 A' 1424 1365 6.51 2.09 0.23 0.38
7 A' 1266 1213 8.48 11.70 0.20 0.34
8 A' 1176 1127 20.23 1.75 0.64 0.78
9 A' 1145 1098 9.69 11.07 0.18 0.30
10 A' 1057 1013 5.60 3.32 0.62 0.77
11 A' 953 913 34.65 4.85 0.21 0.34
12 A' 937 898 5.32 4.17 0.61 0.76
13 A' 931 892 3.00 0.88 0.74 0.85
14 A" 908 870 6.45 1.40 0.75 0.86
15 A" 876 840 0.28 0.11 0.75 0.86
16 A" 788 756 63.80 0.45 0.75 0.86
17 A" 661 633 1.38 0.34 0.75 0.86
18 A" 618 592 16.59 0.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12863.3 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 12329.5 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 PBE1PBE/6-311G*
ABC
0.33146 0.32487 0.16407

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.364 0.000
C2 0.610 -0.957 0.000
C3 0.000 1.119 0.000
N4 -0.694 -0.978 0.000
O5 -1.082 0.340 0.000
H6 2.152 0.691 0.000
H7 1.144 -1.898 0.000
H8 -0.188 2.182 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41811.35452.26002.20741.07812.26212.2422
C21.41812.16391.30422.13252.25731.08173.2391
C31.35452.16392.20811.33352.19423.22641.0796
N42.26001.30422.20811.37353.29912.05563.1996
O52.20742.13251.33351.37353.25363.15692.0477
H61.07812.25732.19423.29913.25362.77842.7745
H72.26211.08173.22642.05563.15692.77844.2918
H82.24223.23911.07963.19962.04772.77454.2918

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.167 C1 C2 H7 129.136
C1 C3 O5 110.405 C1 C3 H8 133.884
C2 C1 C3 102.579 C2 C1 H6 128.941
C2 N4 O5 105.546 C3 C1 H6 128.480
C3 O5 N4 109.304 N4 C2 H7 118.697
O5 C3 H8 115.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.450      
2 C -0.004      
3 C 0.073      
4 N -0.143      
5 O -0.185      
6 H 0.223      
7 H 0.238      
8 H 0.248      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.549 1.535 0.000 2.976
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.338 -2.591 0.000
y -2.591 -24.727 0.000
z 0.000 0.000 -30.087
Traceless
 xyz
x -0.931 -2.591 0.000
y -2.591 4.486 0.000
z 0.000 0.000 -3.555
Polar
3z2-r2-7.109
x2-y2-3.611
xy-2.591
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.116 -0.220 0.000
y -0.220 6.729 0.000
z 0.000 0.000 2.950


<r2> (average value of r2) Å2
<r2> 76.113
(<r2>)1/2 8.724