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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-244.976187
Energy at 298.15K 
HF Energy-244.454092
Nuclear repulsion energy157.176206
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 MP2/6-31G
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' 3334 3190 0.53 122.79 0.14 0.24
2 A' 3306 3163 0.18 41.20 0.28 0.44
3 A' 3292 3149 0.79 78.85 0.59 0.74
4 A' 1546 1479 7.17 11.67 0.14 0.24
5 A' 1424 1363 29.20 17.64 0.46 0.63
6 A' 1367 1308 5.71 7.25 0.14 0.25
7 A' 1210 1158 2.45 8.29 0.20 0.33
8 A' 1156 1106 16.21 8.31 0.57 0.72
9 A' 1091 1044 0.24 6.21 0.22 0.35
10 A' 1020 976 16.34 1.29 0.69 0.81
11 A' 922 882 4.26 6.21 0.55 0.71
12 A' 892 854 0.82 2.22 0.45 0.62
13 A' 748 715 14.00 10.40 0.14 0.25
14 A" 837 801 19.40 2.51 0.75 0.86
15 A" 796 762 3.75 0.01 0.75 0.86
16 A" 752 720 64.48 1.58 0.75 0.86
17 A" 612 586 3.87 0.13 0.75 0.86
18 A" 580 555 10.88 1.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12441.7 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 11904.2 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 MP2/6-31G
ABC
0.31061 0.29947 0.15247

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.133 0.388 0.000
C2 0.659 -0.969 0.000
C3 0.000 1.168 0.000
N4 -0.688 -1.060 0.000
O5 -1.142 0.353 0.000
H6 2.163 0.723 0.000
H7 1.234 -1.887 0.000
H8 -0.194 2.232 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43741.37612.32692.27611.08212.27732.2716
C21.43742.23661.35062.23452.26291.08303.3123
C31.37612.23662.33191.40372.20803.29511.0808
N42.32691.35062.33191.48363.36202.09243.3282
O52.27612.23451.40371.48363.32563.26532.1048
H61.08212.26292.20803.36203.32562.77002.7982
H72.27731.08303.29512.09243.26532.77004.3590
H82.27163.31231.08083.32822.10482.79824.3590

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.113 C1 C2 H7 128.711
C1 C3 O5 109.930 C1 C3 H8 134.878
C2 C1 C3 105.284 C2 C1 H6 127.266
C2 N4 O5 103.973 C3 C1 H6 127.451
C3 O5 N4 107.699 N4 C2 H7 118.176
O5 C3 H8 115.192
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability