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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCSD/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 CCSD/6-31G**
 hartrees
Energy at 0K-245.354613
Energy at 298.15K 
HF Energy-244.590711
Nuclear repulsion energy161.750393
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 CCSD/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' 3369 3142 0.10      
2 A' 3345 3120 0.09      
3 A' 3325 3101 2.47      
4 A' 1663 1551 8.49      
5 A' 1528 1425 32.56      
6 A' 1445 1348 8.32      
7 A' 1287 1200 6.17      
8 A' 1194 1114 18.13      
9 A' 1146 1069 8.15      
10 A' 1074 1002 3.88      
11 A' 948 884 22.96      
12 A' 927 865 0.15      
13 A' 924 861 17.41      
14 A" 901 840 6.54      
15 A" 868 810 2.71      
16 A" 787 734 44.32      
17 A" 638 595 1.40      
18 A" 597 557 16.26      

Unscaled Zero Point Vibrational Energy (zpe) 12983.0 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 12107.9 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 CCSD/6-31G**
ABC
0.32682 0.31907 0.16145

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.374 0.000
C2 0.620 -0.961 0.000
C3 0.000 1.128 0.000
N4 -0.691 -0.996 0.000
O5 -1.097 0.341 0.000
H6 2.151 0.702 0.000
H7 1.166 -1.890 0.000
H8 -0.185 2.188 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42791.35642.27712.22501.07462.26432.2391
C21.42792.17861.31182.15452.25991.07793.2499
C31.35642.17862.23351.35052.19283.23531.0761
N42.27711.31182.23351.39673.31072.06153.2238
O52.22502.15451.35051.39673.26823.17772.0603
H61.07462.25992.19283.31073.26822.77232.7689
H72.26431.07793.23532.06153.17772.77234.2959
H82.23913.24991.07613.22382.06032.76894.2959

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.362 C1 C2 H7 128.730
C1 C3 O5 110.570 C1 C3 H8 133.676
C2 C1 C3 102.943 C2 C1 H6 128.572
C2 N4 O5 105.352 C3 C1 H6 128.485
C3 O5 N4 108.773 N4 C2 H7 118.908
O5 C3 H8 115.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability