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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-246.145367
Energy at 298.15K 
HF Energy-246.145367
Nuclear repulsion energy162.434593
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 B3LYP/cc-pVQZ
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' 3279 3176 0.04 122.09 0.11 0.19
2 A' 3255 3154 0.08 58.25 0.62 0.77
3 A' 3233 3132 0.94 89.73 0.35 0.52
4 A' 1598 1548 9.99 2.31 0.04 0.09
5 A' 1460 1415 30.36 34.62 0.22 0.36
6 A' 1404 1360 7.14 2.49 0.13 0.23
7 A' 1252 1213 5.63 13.93 0.12 0.21
8 A' 1152 1116 21.78 4.68 0.35 0.52
9 A' 1120 1085 10.42 10.46 0.10 0.18
10 A' 1043 1011 6.31 2.49 0.58 0.73
11 A' 937 908 10.78 3.22 0.62 0.77
12 A' 922 893 1.44 0.82 0.59 0.74
13 A' 876 848 23.64 5.68 0.17 0.28
14 A" 922 893 5.16 0.70 0.75 0.86
15 A" 885 857 0.12 0.21 0.75 0.86
16 A" 785 761 58.17 0.02 0.75 0.86
17 A" 651 631 2.65 0.17 0.75 0.86
18 A" 610 591 12.96 0.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12691.8 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 12295.9 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 B3LYP/cc-pVQZ
ABC
0.32979 0.32170 0.16285

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.367 0.000
C2 0.614 -0.960 0.000
C3 0.000 1.124 0.000
N4 -0.689 -0.990 0.000
O5 -1.090 0.345 0.000
H6 2.145 0.693 0.000
H7 1.159 -1.890 0.000
H8 -0.176 2.185 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42031.35332.26322.21201.07382.25732.2340
C21.42032.17231.30412.14662.25251.07783.2427
C31.35332.17232.22371.33962.18773.22901.0758
N42.26321.30412.22371.39433.29642.05533.2166
O52.21202.14661.33961.39433.25353.17062.0544
H61.07382.25252.18773.29643.25352.76512.7592
H72.25731.07783.22902.05533.17062.76514.2882
H82.23403.24271.07583.21662.05442.75924.2882

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.270 C1 C2 H7 128.755
C1 C3 O5 110.448 C1 C3 H8 133.433
C2 C1 C3 103.081 C2 C1 H6 128.615
C2 N4 O5 105.364 C3 C1 H6 128.304
C3 O5 N4 108.837 N4 C2 H7 118.975
O5 C3 H8 116.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.265      
2 C 0.003      
3 C 0.139      
4 N -0.107      
5 O -0.187      
6 H 0.125      
7 H 0.138      
8 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.577 1.504 0.000 2.984
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.739 -2.645 0.000
y -2.645 -25.338 0.000
z 0.000 0.000 -30.150
Traceless
 xyz
x -0.995 -2.645 0.000
y -2.645 4.107 0.000
z 0.000 0.000 -3.112
Polar
3z2-r2-6.223
x2-y2-3.402
xy-2.645
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.836 -0.156 0.000
y -0.156 7.487 0.000
z 0.000 0.000 4.057


<r2> (average value of r2) Å2
<r2> 76.715
(<r2>)1/2 8.759