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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-245.591431
Energy at 298.15K 
HF Energy-244.671728
Nuclear repulsion energy162.567735
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/6-311+G(3df,2p)
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' 3314 3161 0.21      
2 A' 3289 3137 0.23      
3 A' 3271 3120 0.86      
4 A' 1632 1557 12.14      
5 A' 1500 1430 35.74      
6 A' 1422 1356 9.91      
7 A' 1272 1213 6.85      
8 A' 1180 1126 21.33      
9 A' 1133 1080 9.22      
10 A' 1054 1005 3.87      
11 A' 948 904 27.57      
12 A' 926 884 8.50      
13 A' 924 881 4.88      
14 A" 930 887 6.55      
15 A" 900 859 0.06      
16 A" 790 753 58.45      
17 A" 649 619 2.18      
18 A" 608 580 13.53      

Unscaled Zero Point Vibrational Energy (zpe) 12871.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 12275.0 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 QCISD/6-311+G(3df,2p)
ABC
0.32988 0.32249 0.16307

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.370 0.000
C2 0.613 -0.961 0.000
C3 0.000 1.121 0.000
N4 -0.691 -0.985 0.000
O5 -1.089 0.341 0.000
H6 2.148 0.699 0.000
H7 1.151 -1.896 0.000
H8 -0.182 2.182 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42611.35282.26552.21451.07462.26572.2346
C21.42612.17021.30392.14322.26091.07833.2421
C31.35282.17022.21591.33932.18953.22861.0767
N42.26551.30392.21591.38463.30062.05443.2073
O52.21452.14321.33931.38463.25713.16562.0519
H61.07462.26092.18953.30063.25712.77952.7627
H72.26571.07833.22862.05443.16562.77954.2901
H82.23463.24211.07673.20732.05192.76274.2901

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.092 C1 C2 H7 129.036
C1 C3 O5 110.690 C1 C3 H8 133.469
C2 C1 C3 102.666 C2 C1 H6 128.863
C2 N4 O5 105.681 C3 C1 H6 128.471
C3 O5 N4 108.871 N4 C2 H7 118.872
O5 C3 H8 115.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability