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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-243.654493
Energy at 298.15K 
HF Energy-243.208862
Nuclear repulsion energy159.353848
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 CID/3-21G*
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' 3394 3158 0.84      
2 A' 3366 3132 0.37      
3 A' 3346 3114 1.51      
4 A' 1636 1523 10.17      
5 A' 1469 1367 20.89      
6 A' 1431 1332 10.12      
7 A' 1292 1203 6.62      
8 A' 1204 1120 14.57      
9 A' 1082 1007 7.91      
10 A' 1062 988 11.68      
11 A' 978 910 6.96      
12 A' 939 874 0.11      
13 A' 891 829 24.94      
14 A" 967 900 2.34      
15 A" 946 880 4.11      
16 A" 831 773 72.59      
17 A" 658 613 9.52      
18 A" 600 558 12.14      

Unscaled Zero Point Vibrational Energy (zpe) 13046.0 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 12139.3 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 CID/3-21G*
ABC
0.32051 0.30636 0.15664

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.121 0.395 0.000
C2 0.638 -0.964 0.000
C3 0.000 1.149 0.000
N4 -0.674 -1.044 0.000
O5 -1.127 0.346 0.000
H6 2.142 0.721 0.000
H7 1.219 -1.867 0.000
H8 -0.175 2.208 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.44181.35152.30072.24891.07212.26422.2287
C21.44182.20691.31442.19732.25911.07463.2736
C31.35152.20692.29441.38432.18463.25351.0727
N42.30071.31442.29441.46143.32412.06453.2895
O52.24892.19731.38431.46143.29103.22502.0912
H61.07212.25912.18463.32413.29102.74872.7530
H72.26421.07463.25352.06453.22502.74874.3068
H82.22873.27361.07273.28952.09122.75304.3068

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.102 C1 C2 H7 127.658
C1 C3 O5 110.571 C1 C3 H8 133.339
C2 C1 C3 104.340 C2 C1 H6 127.348
C2 N4 O5 104.548 C3 C1 H6 128.311
C3 O5 N4 107.439 N4 C2 H7 119.241
O5 C3 H8 116.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability