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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-245.422939
Energy at 298.15K 
HF Energy-244.637062
Nuclear repulsion energy161.884872
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 QCISD/6-311G*
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' 3299 3158 0.15      
2 A' 3275 3135 0.12      
3 A' 3256 3118 2.11      
4 A' 1631 1561 9.39      
5 A' 1499 1436 35.02      
6 A' 1418 1357 10.18      
7 A' 1265 1212 7.79      
8 A' 1175 1125 24.38      
9 A' 1130 1081 9.69      
10 A' 1054 1009 4.23      
11 A' 945 905 24.15      
12 A' 924 885 0.25      
13 A' 921 882 16.10      
14 A" 884 847 9.98      
15 A" 868 831 0.22      
16 A" 781 748 59.99      
17 A" 639 611 2.16      
18 A" 599 574 17.56      

Unscaled Zero Point Vibrational Energy (zpe) 12781.9 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 12237.3 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 QCISD/6-311G*
ABC
0.32710 0.31979 0.16170

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.131 0.373 0.000
C2 0.615 -0.964 0.000
C3 0.000 1.125 0.000
N4 -0.694 -0.988 0.000
O5 -1.093 0.341 0.000
H6 2.161 0.701 0.000
H7 1.154 -1.905 0.000
H8 -0.189 2.191 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43291.35902.27702.22501.08032.27762.2470
C21.43292.17831.30982.15042.27161.08383.2558
C31.35902.17832.22471.34542.20203.24241.0819
N42.27701.30982.22471.38833.31712.06273.2188
O52.22502.15041.34541.38833.27383.17722.0585
H61.08032.27162.20203.31713.27382.79362.7823
H72.27761.08383.24242.06273.17722.79364.3101
H82.24703.25581.08193.21882.05852.78234.3101

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.163 C1 C2 H7 129.116
C1 C3 O5 110.718 C1 C3 H8 133.705
C2 C1 C3 102.531 C2 C1 H6 128.798
C2 N4 O5 105.657 C3 C1 H6 128.671
C3 O5 N4 108.931 N4 C2 H7 118.721
O5 C3 H8 115.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability