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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCSD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-245.368149
Energy at 298.15K 
HF Energy-244.597464
Nuclear repulsion energy161.550776
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/6-31+G**
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' 3364 3141 0.03      
2 A' 3342 3121 0.11      
3 A' 3324 3104 1.32      
4 A' 1649 1540 11.37      
5 A' 1519 1418 35.71      
6 A' 1435 1340 7.65      
7 A' 1282 1197 6.94      
8 A' 1186 1107 20.89      
9 A' 1138 1062 9.79      
10 A' 1068 997 4.93      
11 A' 944 881 20.26      
12 A' 922 861 0.52      
13 A' 915 855 21.56      
14 A" 887 828 9.53      
15 A" 845 789 9.34      
16 A" 769 718 56.76      
17 A" 628 586 1.23      
18 A" 579 541 16.74      

Unscaled Zero Point Vibrational Energy (zpe) 12896.7 cm-1
Scaled (by 0.9338) Zero Point Vibrational Energy (zpe) 12043.0 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/6-31+G**
ABC
0.32605 0.31822 0.16104

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.374 0.000
C2 0.621 -0.963 0.000
C3 0.000 1.130 0.000
N4 -0.691 -0.997 0.000
O5 -1.098 0.342 0.000
H6 2.152 0.703 0.000
H7 1.165 -1.893 0.000
H8 -0.186 2.190 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42981.35842.27852.22711.07532.26752.2421
C21.42982.18291.31282.15822.26241.07823.2546
C31.35842.18292.23671.35212.19433.24021.0764
N42.27851.31282.23671.39933.31292.06173.2272
O52.22712.15821.35211.39933.27073.18122.0615
H61.07532.26242.19433.31293.27072.77722.7714
H72.26751.07823.24022.06173.18122.77724.3014
H82.24213.25461.07643.22722.06152.77144.3014

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.294 C1 C2 H7 128.879
C1 C3 O5 110.508 C1 C3 H8 133.778
C2 C1 C3 103.032 C2 C1 H6 128.593
C2 N4 O5 105.409 C3 C1 H6 128.376
C3 O5 N4 108.757 N4 C2 H7 118.826
O5 C3 H8 115.713
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability