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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-244.995883
Energy at 298.15K 
HF Energy-244.455626
Nuclear repulsion energy157.278136
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/6-31G
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' 3291 3171 0.02      
2 A' 3263 3144 0.06      
3 A' 3246 3128 1.64      
4 A' 1585 1527 8.32      
5 A' 1446 1394 24.92      
6 A' 1374 1324 9.49      
7 A' 1244 1199 7.59      
8 A' 1153 1111 14.26      
9 A' 1059 1020 2.47      
10 A' 1008 971 16.85      
11 A' 920 887 5.73      
12 A' 889 857 1.31      
13 A' 717 691 19.46      
14 A" 868 836 10.47      
15 A" 836 805 4.24      
16 A" 756 728 56.09      
17 A" 605 583 8.13      
18 A" 559 539 13.36      

Unscaled Zero Point Vibrational Energy (zpe) 12407.8 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 11956.2 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/6-31G
ABC
0.31272 0.29806 0.15261

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.132 0.396 0.000
C2 0.649 -0.972 0.000
C3 0.000 1.167 0.000
N4 -0.681 -1.064 0.000
O5 -1.142 0.354 0.000
H6 2.166 0.724 0.000
H7 1.234 -1.888 0.000
H8 -0.187 2.234 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.45051.36962.32742.27411.08462.28602.2630
C21.45052.23521.33342.22842.27531.08643.3139
C31.36962.23522.33201.40162.21033.29441.0840
N42.32741.33342.33201.49053.36152.08463.3348
O52.27412.22841.40161.49053.32813.26632.1090
H61.08462.27532.21033.36153.32812.77352.7958
H72.28601.08643.29442.08463.26632.77354.3604
H82.26303.31391.08403.33482.10902.79584.3604

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.376 C1 C2 H7 128.016
C1 C3 O5 110.291 C1 C3 H8 134.209
C2 C1 C3 104.820 C2 C1 H6 127.073
C2 N4 O5 104.073 C3 C1 H6 128.107
C3 O5 N4 107.441 N4 C2 H7 118.609
O5 C3 H8 115.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability