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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: BLYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-245.985636
Energy at 298.15K 
HF Energy-245.985636
Nuclear repulsion energy160.322933
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/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' 3212 3194 0.38 114.03 0.11 0.20
2 A' 3185 3167 0.22 63.32 0.60 0.75
3 A' 3165 3147 1.88 92.17 0.39 0.56
4 A' 1534 1525 6.62 2.09 0.07 0.14
5 A' 1401 1393 25.75 24.59 0.33 0.50
6 A' 1349 1342 4.40 2.30 0.10 0.18
7 A' 1200 1193 3.99 12.38 0.20 0.34
8 A' 1116 1110 18.24 5.82 0.58 0.74
9 A' 1081 1076 6.06 9.17 0.08 0.16
10 A' 1018 1012 8.51 4.30 0.71 0.83
11 A' 902 897 7.45 3.72 0.66 0.79
12 A' 886 881 1.46 0.77 0.48 0.65
13 A' 794 790 17.56 5.91 0.14 0.24
14 A" 873 869 4.31 2.03 0.75 0.86
15 A" 817 813 0.10 0.22 0.75 0.86
16 A" 763 758 40.21 1.33 0.75 0.86
17 A" 624 621 3.85 0.33 0.75 0.86
18 A" 588 585 9.00 1.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12252.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 12185.1 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/6-31G(2df,p)
ABC
0.32088 0.31391 0.15868

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.134 0.371 0.000
C2 0.627 -0.965 0.000
C3 0.000 1.136 0.000
N4 -0.697 -1.012 0.000
O5 -1.107 0.353 0.000
H6 2.166 0.702 0.000
H7 1.182 -1.900 0.000
H8 -0.185 2.205 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42871.36832.29462.24141.08332.27142.2599
C21.42872.19211.32442.17772.26851.08763.2724
C31.36832.19212.25801.35572.20893.25791.0854
N42.29461.32442.25801.42543.33652.07783.2578
O52.24142.17771.35571.42543.29133.21162.0690
H61.08332.26852.20893.33653.29132.78202.7906
H72.27141.08763.25792.07783.21162.78204.3270
H82.25993.27241.08543.25782.06902.79064.3270

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.858 C1 C2 H7 128.517
C1 C3 O5 110.735 C1 C3 H8 133.815
C2 C1 C3 103.186 C2 C1 H6 128.612
C2 N4 O5 104.678 C3 C1 H6 128.202
C3 O5 N4 108.543 N4 C2 H7 118.625
O5 C3 H8 115.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.214      
2 C 0.063      
3 C 0.074      
4 N -0.157      
5 O -0.111      
6 H 0.100      
7 H 0.114      
8 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.372 1.449 0.000 2.780
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.101 -2.428 0.000
y -2.428 -25.005 0.000
z 0.000 0.000 -29.311
Traceless
 xyz
x -0.943 -2.428 0.000
y -2.428 3.701 0.000
z 0.000 0.000 -2.758
Polar
3z2-r2-5.516
x2-y2-3.096
xy-2.428
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.312 -0.214 0.000
y -0.214 7.136 0.000
z 0.000 0.000 2.948


<r2> (average value of r2) Å2
<r2> 77.842
(<r2>)1/2 8.823