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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD(T)/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(T)/6-311G*
 hartrees
Energy at 0K-245.458614
Energy at 298.15K 
HF Energy-244.635098
Nuclear repulsion energy161.210342
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(T)/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' 3276 3154        
2 A' 3253 3132        
3 A' 3234 3114        
4 A' 1592 1533        
5 A' 1466 1411        
6 A' 1397 1345        
7 A' 1241 1195        
8 A' 1156 1113        
9 A' 1117 1075        
10 A' 1045 1006        
11 A' 928 893        
12 A' 909 875        
13 A' 886 853        
14 A" 852 821        
15 A" 831 800        
16 A" 762 734        
17 A" 625 602        
18 A" 590 568        

Unscaled Zero Point Vibrational Energy (zpe) 12579.6 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 12111.6 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(T)/6-311G*
ABC
0.32396 0.31761 0.16038

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.136 0.371 0.000
C2 0.620 -0.966 0.000
C3 0.000 1.130 0.000
N4 -0.698 -0.994 0.000
O5 -1.098 0.345 0.000
H6 2.167 0.700 0.000
H7 1.159 -1.908 0.000
H8 -0.189 2.197 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43311.36562.28622.23411.08232.27952.2553
C21.43312.18541.31822.16132.27321.08563.2643
C31.36562.18542.23581.34972.20913.25151.0835
N42.28621.31822.23581.39823.32822.06973.2314
O52.23412.16131.34971.39823.28433.18962.0627
H61.08232.27322.20913.32823.28432.79582.7911
H72.27951.08563.25152.06973.18962.79584.3204
H82.25533.26431.08353.23142.06272.79114.3204

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.328 C1 C2 H7 129.128
C1 C3 O5 110.725 C1 C3 H8 133.774
C2 C1 C3 102.648 C2 C1 H6 128.758
C2 N4 O5 105.400 C3 C1 H6 128.594
C3 O5 N4 108.899 N4 C2 H7 118.544
O5 C3 H8 115.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability