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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCSD=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-245.350685
Energy at 298.15K 
HF Energy-244.585017
Nuclear repulsion energy161.777962
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=FULL/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' 3325 3158 0.11      
2 A' 3303 3138 0.06      
3 A' 3283 3118 2.03      
4 A' 1659 1576 8.17      
5 A' 1525 1449 32.59      
6 A' 1438 1366 9.55      
7 A' 1284 1219 6.80      
8 A' 1194 1134 20.45      
9 A' 1145 1087 8.45      
10 A' 1072 1018 4.13      
11 A' 949 901 22.39      
12 A' 930 883 0.08      
13 A' 924 878 19.30      
14 A" 893 849 7.38      
15 A" 861 818 3.84      
16 A" 782 743 48.02      
17 A" 642 609 1.48      
18 A" 600 570 17.74      

Unscaled Zero Point Vibrational Energy (zpe) 12904.6 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 12256.7 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=FULL/6-31G*
ABC
0.32701 0.31929 0.16155

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 0.374 0.000
C2 0.619 -0.960 0.000
C3 0.000 1.127 0.000
N4 -0.691 -0.995 0.000
O5 -1.097 0.340 0.000
H6 2.156 0.702 0.000
H7 1.168 -1.895 0.000
H8 -0.188 2.192 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42701.35512.27522.22331.08062.26872.2440
C21.42702.17691.31062.15312.26371.08373.2540
C31.35512.17692.23181.34952.19733.23941.0817
N42.27521.31062.23181.39603.31442.06493.2267
O52.22332.15311.34951.39603.27263.18182.0623
H61.08062.26372.19733.31443.27262.77832.7778
H72.26871.08373.23942.06493.18182.77834.3059
H82.24403.25401.08173.22672.06232.77784.3059

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.359 C1 C2 H7 128.760
C1 C3 O5 110.585 C1 C3 H8 133.804
C2 C1 C3 102.949 C2 C1 H6 128.514
C2 N4 O5 105.361 C3 C1 H6 128.537
C3 O5 N4 108.747 N4 C2 H7 118.881
O5 C3 H8 115.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability