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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-43.835126
Energy at 298.15K 
HF Energy-43.370546
Nuclear repulsion energy80.294201
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' 3303 3192 0.69 122.82 0.20 0.33
2 A' 3272 3162 0.68 32.99 0.34 0.51
3 A' 3255 3145 1.99 70.34 0.57 0.73
4 A' 1506 1455 8.76 17.64 0.13 0.24
5 A' 1392 1345 28.49 13.59 0.38 0.55
6 A' 1318 1274 6.23 9.71 0.13 0.22
7 A' 1160 1121 2.31 8.74 0.18 0.31
8 A' 1120 1082 21.60 8.58 0.34 0.50
9 A' 1063 1027 0.52 9.00 0.12 0.22
10 A' 1002 968 15.64 1.04 0.75 0.86
11 A' 899 869 6.74 10.77 0.48 0.65
12 A' 860 831 0.44 5.72 0.47 0.64
13 A' 811 784 17.30 9.22 0.21 0.35
14 A" 818 791 7.38 4.75 0.75 0.86
15 A" 806 779 33.57 1.18 0.75 0.86
16 A" 731 707 81.43 2.04 0.75 0.86
17 A" 606 586 2.49 0.71 0.75 0.86
18 A" 572 553 8.15 1.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12247.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 11834.3 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 MP2/CEP-31G
ABC
0.30048 0.29146 0.14795

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 1.162 0.391 0.000
C2 0.668 -0.990 0.000
C3 0.000 1.190 0.000
N4 -0.712 -1.061 0.000
O5 -1.152 0.353 0.000
H6 2.200 0.729 0.000
H7 1.228 -1.929 0.000
H8 -0.209 2.261 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.46691.41002.37072.31411.09172.32132.3183
C21.46692.28021.38122.26132.30261.09373.3671
C31.41002.28022.36141.42432.24793.35251.0909
N42.37071.38122.36141.48093.41802.12523.3603
O52.31412.26131.42431.48093.37303.29722.1288
H61.09172.30262.24793.41803.37302.83002.8548
H72.32131.09373.35252.12523.29722.83004.4297
H82.31833.36711.09093.36032.12882.85484.4297

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.647 C1 C2 H7 129.486
C1 C3 O5 109.458 C1 C3 H8 135.546
C2 C1 C3 104.834 C2 C1 H6 127.695
C2 N4 O5 104.331 C3 C1 H6 127.470
C3 O5 N4 108.729 N4 C2 H7 117.866
O5 C3 H8 114.996
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability