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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-245.775038
Energy at 298.15K 
HF Energy-245.775038
Nuclear repulsion energy161.174378
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 PBEPBEultrafine/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' 3227 3194 0.05 109.54 0.12 0.21
2 A' 3197 3164 0.01 61.08 0.56 0.72
3 A' 3180 3147 1.05 90.74 0.39 0.56
4 A' 1549 1533 6.51 1.95 0.07 0.14
5 A' 1425 1410 25.67 22.99 0.32 0.48
6 A' 1357 1343 4.32 2.58 0.10 0.18
7 A' 1203 1191 4.66 13.26 0.19 0.32
8 A' 1122 1110 17.14 3.76 0.73 0.85
9 A' 1100 1089 5.67 10.06 0.11 0.20
10 A' 1021 1010 8.14 4.87 0.70 0.83
11 A' 901 891 8.40 2.70 0.52 0.68
12 A' 891 882 0.40 2.11 0.63 0.77
13 A' 861 852 19.58 4.79 0.12 0.22
14 A" 871 862 4.91 1.78 0.75 0.86
15 A" 820 811 0.00 0.26 0.75 0.86
16 A" 761 753 44.50 1.19 0.75 0.86
17 A" 635 628 2.12 0.47 0.75 0.86
18 A" 596 590 10.93 0.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12357.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 12229.7 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 PBEPBEultrafine/6-31G(2df,p)
ABC
0.32337 0.31821 0.16039

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.134 0.367 0.000
C2 0.622 -0.962 0.000
C3 0.000 1.130 0.000
N4 -0.700 -0.996 0.000
O5 -1.099 0.346 0.000
H6 2.167 0.699 0.000
H7 1.170 -1.903 0.000
H8 -0.189 2.201 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42351.36692.28472.23291.08492.27032.2613
C21.42352.18211.32242.16192.26771.08923.2647
C31.36692.18212.23811.34942.20953.25091.0873
N42.28471.32242.23811.40073.33012.07793.2373
O52.23292.16191.34941.40073.28473.19502.0653
H61.08492.26772.20953.33013.28472.78652.7940
H72.27031.08923.25092.07793.19502.78654.3230
H82.26133.26471.08733.23732.06532.79404.3230

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.559 C1 C2 H7 128.763
C1 C3 O5 110.578 C1 C3 H8 133.941
C2 C1 C3 102.870 C2 C1 H6 128.879
C2 N4 O5 105.063 C3 C1 H6 128.251
C3 O5 N4 108.930 N4 C2 H7 118.678
O5 C3 H8 115.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.253      
2 C 0.043      
3 C 0.065      
4 N -0.148      
5 O -0.128      
6 H 0.129      
7 H 0.138      
8 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.302 1.465 0.000 2.729
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.790 -2.437 0.000
y -2.437 -24.769 0.000
z 0.000 0.000 -29.371
Traceless
 xyz
x -0.720 -2.437 0.000
y -2.437 3.812 0.000
z 0.000 0.000 -3.091
Polar
3z2-r2-6.183
x2-y2-3.022
xy-2.437
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.280 -0.196 0.000
y -0.196 7.079 0.000
z 0.000 0.000 2.983


<r2> (average value of r2) Å2
<r2> 77.157
(<r2>)1/2 8.784