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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-245.679240
Energy at 298.15K 
HF Energy-245.679240
Nuclear repulsion energy157.884267
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' 3269 3224 0.10 134.27 0.10 0.19
2 A' 3244 3199 0.39 49.41 0.74 0.85
3 A' 3224 3179 0.94 88.23 0.44 0.61
4 A' 1536 1515 7.00 4.11 0.11 0.20
5 A' 1414 1394 24.23 22.77 0.47 0.63
6 A' 1343 1324 3.71 5.59 0.14 0.24
7 A' 1200 1184 6.08 9.58 0.27 0.43
8 A' 1120 1104 17.77 8.79 0.58 0.73
9 A' 1074 1059 0.81 9.43 0.17 0.30
10 A' 1013 999 16.25 3.77 0.52 0.68
11 A' 902 889 2.95 4.89 0.68 0.81
12 A' 879 867 1.16 1.14 0.56 0.72
13 A' 693 683 13.80 8.31 0.17 0.28
14 A" 891 878 6.31 2.29 0.75 0.86
15 A" 851 839 2.15 0.65 0.75 0.86
16 A" 769 758 71.69 1.26 0.75 0.86
17 A" 612 604 7.04 0.08 0.75 0.86
18 A" 576 568 7.91 1.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12303.9 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 12134.1 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 PBEPBE/6-31G
ABC
0.31389 0.30184 0.15387

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 1.133 0.382 0.000
C2 0.646 -0.965 0.000
C3 0.000 1.158 0.000
N4 -0.690 -1.057 0.000
O5 -1.133 0.362 0.000
H6 2.167 0.710 0.000
H7 1.225 -1.886 0.000
H8 -0.179 2.229 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43251.37322.32172.26541.08482.27022.2650
C21.43252.21981.33902.21932.26241.08763.2988
C31.37322.21982.31971.38462.21283.28171.0852
N42.32171.33902.31971.48593.35852.08653.3246
O52.26542.21931.38461.48593.31773.25752.0963
H61.08482.26242.21283.35853.31772.76172.7944
H72.27021.08763.28172.08653.25752.76174.3477
H82.26503.29881.08523.32462.09632.79444.3477

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.757 C1 C2 H7 128.010
C1 C3 O5 110.460 C1 C3 H8 133.908
C2 C1 C3 104.571 C2 C1 H6 127.439
C2 N4 O5 103.438 C3 C1 H6 127.990
C3 O5 N4 107.774 N4 C2 H7 118.233
O5 C3 H8 115.632
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 -0.169      
2 C -0.021      
3 C 0.107      
4 N -0.135      
5 O -0.350      
6 H 0.171      
7 H 0.196      
8 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.035 1.539 0.000 3.403
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.050 -2.559 0.000
y -2.559 -24.818 0.000
z 0.000 0.000 -30.001
Traceless
 xyz
x -1.640 -2.559 0.000
y -2.559 4.707 0.000
z 0.000 0.000 -3.067
Polar
3z2-r2-6.134
x2-y2-4.232
xy-2.559
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.147 -0.220 0.000
y -0.220 6.936 0.000
z 0.000 0.000 2.205


<r2> (average value of r2) Å2
<r2> 79.889
(<r2>)1/2 8.938