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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-44.495726
Energy at 298.15K 
HF Energy-44.495726
Nuclear repulsion energy81.781062
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3281 3197 0.39 140.70 0.11 0.20
2 A' 3254 3171 0.08 46.82 0.75 0.86
3 A' 3236 3154 1.74 93.05 0.45 0.62
4 A' 1543 1504 8.46 3.88 0.09 0.16
5 A' 1410 1374 31.14 35.15 0.39 0.56
6 A' 1353 1319 2.51 7.66 0.10 0.18
7 A' 1216 1185 8.56 11.96 0.16 0.28
8 A' 1133 1105 21.35 10.16 0.44 0.61
9 A' 1067 1039 2.66 10.70 0.09 0.17
10 A' 1026 1000 18.72 3.83 0.61 0.76
11 A' 917 894 6.52 6.05 0.64 0.78
12 A' 885 862 0.37 1.46 0.49 0.66
13 A' 800 779 23.39 9.76 0.18 0.31
14 A" 905 882 3.09 2.31 0.75 0.86
15 A" 875 853 7.74 0.10 0.75 0.86
16 A" 793 772 88.72 0.46 0.75 0.86
17 A" 615 599 5.22 0.01 0.75 0.86
18 A" 573 558 7.77 1.16 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12440.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 12123.2 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/CEP-121G
ABC
0.31340 0.30136 0.15363

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.138 0.386 0.000
C2 0.647 -0.973 0.000
C3 0.000 1.164 0.000
N4 -0.695 -1.047 0.000
O5 -1.130 0.353 0.000
H6 2.167 0.712 0.000
H7 1.212 -1.896 0.000
H8 -0.185 2.228 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.44561.37832.32692.26801.07912.28362.2679
C21.44562.23281.34342.21722.26971.08243.3077
C31.37832.23282.31781.39032.21333.29141.0803
N42.32691.34342.31781.46693.35922.08723.3150
O52.26802.21721.39031.46693.31593.24742.0993
H61.07912.26972.21333.35923.31592.77762.7981
H72.28361.08243.29142.08723.24742.77764.3546
H82.26793.30771.08033.31502.09932.79814.3546

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.034 C1 C2 H7 128.630
C1 C3 O5 110.004 C1 C3 H8 134.206
C2 C1 C3 104.473 C2 C1 H6 127.451
C2 N4 O5 104.089 C3 C1 H6 128.076
C3 O5 N4 108.401 N4 C2 H7 118.336
O5 C3 H8 115.791
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.025      
2 C -0.361      
3 C -0.172      
4 N 0.096      
5 O -0.185      
6 H 0.204      
7 H 0.192      
8 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.310 1.595 0.000 3.674
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.777 -2.770 0.000
y -2.770 -25.077 0.000
z 0.000 0.000 -30.509
Traceless
 xyz
x -1.984 -2.770 0.000
y -2.770 5.066 0.000
z 0.000 0.000 -3.082
Polar
3z2-r2-6.164
x2-y2-4.700
xy-2.770
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.558 -0.270 0.000
y -0.270 7.272 0.000
z 0.000 0.000 3.156


<r2> (average value of r2) Å2
<r2> 66.001
(<r2>)1/2 8.124