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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-245.213528
Energy at 298.15K 
HF Energy-244.587609
Nuclear repulsion energy163.228023
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 CISD/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' 3420 3167 0.20      
2 A' 3398 3146 0.09      
3 A' 3378 3128 2.26      
4 A' 1724 1596 10.53      
5 A' 1580 1462 39.24      
6 A' 1492 1381 11.82      
7 A' 1334 1235 8.96      
8 A' 1242 1150 18.96      
9 A' 1190 1102 10.25      
10 A' 1102 1021 2.19      
11 A' 1008 933 45.99      
12 A' 969 897 5.33      
13 A' 962 890 2.53      
14 A" 955 884 5.94      
15 A" 935 865 1.51      
16 A" 826 765 53.53      
17 A" 673 623 1.84      
18 A" 627 581 18.80      

Unscaled Zero Point Vibrational Energy (zpe) 13407.3 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 12412.5 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 CISD/6-31G*
ABC
0.33309 0.32463 0.16440

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.121 0.370 0.000
C2 0.609 -0.957 0.000
C3 0.000 1.118 0.000
N4 -0.689 -0.980 0.000
O5 -1.083 0.337 0.000
H6 2.143 0.695 0.000
H7 1.148 -1.889 0.000
H8 -0.185 2.176 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42241.34742.25762.20411.07332.25902.2289
C21.42242.16281.29822.13072.25511.07643.2328
C31.34742.16282.20811.33532.18473.21871.0745
N42.25761.29822.20811.37493.29072.04973.1964
O52.20412.13071.33531.37493.24653.15202.0469
H61.07332.25512.18473.29073.24652.76932.7596
H72.25901.07643.21872.04973.15202.76934.2784
H82.22893.23281.07453.19642.04692.75964.2784

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.076 C1 C2 H7 128.864
C1 C3 O5 110.492 C1 C3 H8 133.635
C2 C1 C3 102.646 C2 C1 H6 128.726
C2 N4 O5 105.670 C3 C1 H6 128.628
C3 O5 N4 109.116 N4 C2 H7 119.060
O5 C3 H8 115.873
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability