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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-244.606920
Energy at 298.15K 
HF Energy-244.606920
Nuclear repulsion energy156.693438
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 BLYP/3-21G*
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' 3234 3213 0.09 105.69 0.10 0.19
2 A' 3204 3183 0.21 70.25 0.60 0.75
3 A' 3179 3158 1.47 82.32 0.39 0.56
4 A' 1496 1486 7.49 5.47 0.13 0.23
5 A' 1350 1341 24.91 11.15 0.63 0.77
6 A' 1321 1312 0.65 13.61 0.33 0.50
7 A' 1169 1162 4.55 9.71 0.24 0.39
8 A' 1113 1106 13.93 9.03 0.67 0.80
9 A' 1043 1036 1.88 8.12 0.16 0.27
10 A' 977 971 13.08 3.10 0.41 0.58
11 A' 909 903 2.88 5.16 0.63 0.77
12 A' 860 854 1.37 1.35 0.46 0.63
13 A' 719 714 10.12 7.09 0.15 0.27
14 A" 888 883 2.93 1.99 0.75 0.86
15 A" 848 842 4.21 1.59 0.75 0.86
16 A" 763 758 66.69 1.73 0.75 0.86
17 A" 611 607 11.42 0.15 0.75 0.86
18 A" 558 555 4.99 1.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12119.9 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 12041.1 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 BLYP/3-21G*
ABC
0.30941 0.29668 0.15146

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.135 0.391 0.000
C2 0.654 -0.965 0.000
C3 0.000 1.162 0.000
N4 -0.683 -1.081 0.000
O5 -1.151 0.370 0.000
H6 2.165 0.722 0.000
H7 1.252 -1.872 0.000
H8 -0.159 2.234 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43871.37212.33882.28581.08212.26582.2524
C21.43872.22531.34222.24492.26491.08633.3011
C31.37212.22532.34411.39692.20923.28211.0841
N42.33881.34222.34411.52393.37072.09103.3558
O52.28582.24491.39691.52393.33443.28642.1114
H61.08212.26492.20923.37073.33442.75002.7730
H72.26581.08633.28212.09103.28642.75004.3420
H82.25243.30111.08413.35582.11142.77304.3420

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 114.458 C1 C2 H7 127.064
C1 C3 O5 111.271 C1 C3 H8 132.649
C2 C1 C3 104.665 C2 C1 H6 127.358
C2 N4 O5 102.937 C3 C1 H6 127.977
C3 O5 N4 106.669 N4 C2 H7 118.477
O5 C3 H8 116.080
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.292      
2 C 0.062      
3 C 0.136      
4 N -0.215      
5 O -0.305      
6 H 0.177      
7 H 0.217      
8 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.684 1.402 0.000 3.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.612 -2.421 0.000
y -2.421 -24.671 0.000
z 0.000 0.000 -30.132
Traceless
 xyz
x -1.211 -2.421 0.000
y -2.421 4.701 0.000
z 0.000 0.000 -3.490
Polar
3z2-r2-6.980
x2-y2-3.942
xy-2.421
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.762 -0.288 0.000
y -0.288 6.632 0.000
z 0.000 0.000 1.789


<r2> (average value of r2) Å2
<r2> 80.692
(<r2>)1/2 8.983