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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-244.995457
Energy at 298.15K 
HF Energy-244.489915
Nuclear repulsion energy156.021586
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/LANL2DZ
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' 3322 3200 0.22 120.55 0.12 0.22
2 A' 3292 3170 0.01 34.73 0.30 0.46
3 A' 3272 3151 1.15 72.42 0.55 0.71
4 A' 1507 1452 9.15 16.07 0.17 0.29
5 A' 1382 1331 27.86 14.57 0.38 0.55
6 A' 1327 1278 7.22 11.49 0.18 0.31
7 A' 1165 1122 2.28 9.50 0.19 0.32
8 A' 1126 1085 22.05 7.81 0.46 0.63
9 A' 1067 1028 0.99 8.54 0.13 0.23
10 A' 1000 963 16.03 1.08 0.75 0.86
11 A' 910 877 7.64 9.06 0.51 0.68
12 A' 872 839 0.08 3.65 0.43 0.61
13 A' 797 768 17.39 9.90 0.17 0.30
14 A" 822 792 2.69 1.75 0.75 0.86
15 A" 784 755 50.38 0.08 0.75 0.86
16 A" 725 698 58.23 0.57 0.75 0.86
17 A" 616 593 6.03 0.74 0.75 0.86
18 A" 581 559 10.14 1.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12283.4 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 11830.1 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/LANL2DZ
ABC
0.30522 0.29575 0.15021

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.146 0.391 0.000
C2 0.668 -0.978 0.000
C3 0.000 1.180 0.000
N4 -0.700 -1.060 0.000
O5 -1.148 0.349 0.000
H6 2.177 0.728 0.000
H7 1.234 -1.906 0.000
H8 -0.205 2.245 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.45031.39122.34742.29441.08532.29852.2939
C21.45032.25961.36992.24942.27851.08683.3394
C31.39122.25962.34691.41782.22363.32371.0842
N42.34741.36992.34691.47843.38742.11093.3415
O52.29442.24941.41781.47843.34723.28032.1176
H61.08532.27852.22363.38743.34722.79782.8242
H72.29851.08683.32372.11093.28032.79784.3932
H82.29393.33941.08423.34152.11762.82424.3932

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.649 C1 C2 H7 129.339
C1 C3 O5 109.530 C1 C3 H8 135.479
C2 C1 C3 105.325 C2 C1 H6 127.351
C2 N4 O5 104.258 C3 C1 H6 127.323
C3 O5 N4 108.237 N4 C2 H7 118.011
O5 C3 H8 114.991
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability