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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-243.717705
Energy at 298.15K 
HF Energy-243.202191
Nuclear repulsion energy157.168994
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 MP2/3-21G*
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' 3334 3172 0.92 108.71 0.11 0.20
2 A' 3309 3148 0.31 37.26 0.70 0.82
3 A' 3292 3132 0.82 74.40 0.46 0.63
4 A' 1529 1454 7.20 11.18 0.14 0.25
5 A' 1391 1323 26.55 5.09 0.70 0.82
6 A' 1358 1292 9.76 15.18 0.38 0.55
7 A' 1184 1126 3.93 12.19 0.27 0.42
8 A' 1155 1099 13.77 4.00 0.75 0.86
9 A' 1079 1026 0.79 6.11 0.17 0.29
10 A' 1017 967 11.93 1.19 0.75 0.86
11 A' 936 891 3.33 6.09 0.53 0.69
12 A' 897 853 0.38 2.86 0.32 0.49
13 A' 817 778 11.24 7.46 0.13 0.23
14 A" 874 832 11.28 2.16 0.75 0.86
15 A" 857 815 1.34 1.02 0.75 0.86
16 A" 779 741 74.20 1.69 0.75 0.86
17 A" 633 602 8.63 0.29 0.75 0.86
18 A" 588 560 7.15 1.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12514.6 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 11905.2 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 MP2/3-21G*
ABC
0.30956 0.30026 0.15242

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.133 0.393 0.000
C2 0.661 -0.963 0.000
C3 0.000 1.162 0.000
N4 -0.685 -1.066 0.000
O5 -1.149 0.354 0.000
H6 2.156 0.730 0.000
H7 1.244 -1.871 0.000
H8 -0.181 2.223 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43531.36932.33062.28261.07732.26652.2536
C21.43532.22511.35002.23912.25831.07923.2960
C31.36932.22512.33051.40452.19903.27811.0772
N42.33061.35002.33051.49443.36092.09033.3279
O52.28262.23911.40451.49443.32683.26832.1051
H61.07732.25832.19903.36093.32682.75612.7738
H72.26651.07923.27812.09033.26832.75614.3357
H82.25363.29601.07723.32792.10512.77384.3357

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.559 C1 C2 H7 128.122
C1 C3 O5 110.749 C1 C3 H8 133.843
C2 C1 C3 104.983 C2 C1 H6 127.418
C2 N4 O5 103.736 C3 C1 H6 127.598
C3 O5 N4 106.973 N4 C2 H7 118.319
O5 C3 H8 115.408
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability