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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/CEP-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/CEP-31G*
 hartrees
Energy at 0K-44.197568
Energy at 298.15K 
HF Energy-43.503542
Nuclear repulsion energy82.653208
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/CEP-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' 3319 3151 0.02 104.88 0.17 0.30
2 A' 3296 3130 0.16 29.57 0.74 0.85
3 A' 3282 3116 1.28 72.87 0.44 0.61
4 A' 1578 1498 9.20 9.75 0.13 0.23
5 A' 1471 1397 25.06 15.93 0.36 0.53
6 A' 1384 1314 2.72 6.13 0.13 0.23
7 A' 1219 1157 7.19 8.74 0.17 0.30
8 A' 1173 1113 18.51 4.57 0.37 0.54
9 A' 1130 1073 4.60 10.30 0.07 0.13
10 A' 1052 999 7.89 3.43 0.67 0.80
11 A' 949 901 33.58 8.12 0.17 0.29
12 A' 896 851 2.56 7.49 0.74 0.85
13 A' 886 841 2.00 2.12 0.75 0.86
14 A" 866 823 1.27 2.27 0.75 0.86
15 A" 840 798 29.52 3.74 0.75 0.86
16 A" 773 734 79.79 1.81 0.75 0.86
17 A" 636 604 0.35 0.79 0.75 0.86
18 A" 602 572 11.57 2.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12676.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 12034.6 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/CEP-31G*
ABC
0.31574 0.31226 0.15700

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.152 0.365 0.000
C2 0.631 -0.975 0.000
C3 0.000 1.146 0.000
N4 -0.713 -0.998 0.000
O5 -1.107 0.348 0.000
H6 2.189 0.698 0.000
H7 1.160 -1.930 0.000
H8 -0.200 2.217 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43841.39162.31052.25941.08852.29522.2932
C21.43842.21311.34472.18522.28611.09123.2991
C31.39162.21312.25941.36432.23393.28721.0899
N42.31051.34472.25941.40313.36122.09233.2559
O52.25942.18521.36431.40313.31423.21442.0770
H61.08852.28612.23393.36123.31422.82212.8310
H72.29521.09123.28722.09233.21442.82214.3645
H82.29323.29911.08993.25592.07702.83104.3645

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.198 C1 C2 H7 129.774
C1 C3 O5 110.130 C1 C3 H8 134.711
C2 C1 C3 102.881 C2 C1 H6 129.039
C2 N4 O5 105.340 C3 C1 H6 128.079
C3 O5 N4 109.451 N4 C2 H7 118.028
O5 C3 H8 115.159
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability