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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-245.584251
Energy at 298.15K 
HF Energy-244.672596
Nuclear repulsion energy162.236106
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/cc-pVTZ
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' 3330 3162 0.47 119.10 0.12 0.21
2 A' 3305 3138 0.67 41.90 0.66 0.79
3 A' 3292 3125 0.28 88.51 0.39 0.57
4 A' 1576 1496 6.76 7.33 0.08 0.14
5 A' 1454 1381 25.55 17.33 0.37 0.54
6 A' 1398 1327 2.67 4.91 0.09 0.16
7 A' 1231 1169 4.18 12.85 0.08 0.15
8 A' 1180 1120 16.54 2.94 0.57 0.73
9 A' 1138 1080 5.69 10.66 0.10 0.18
10 A' 1053 1000 6.54 3.58 0.70 0.82
11 A' 955 907 25.73 6.71 0.13 0.24
12 A' 919 872 2.33 4.30 0.67 0.80
13 A' 910 864 5.28 0.26 0.50 0.67
14 A" 901 856 4.62 0.48 0.75 0.86
15 A" 858 815 3.16 0.04 0.75 0.86
16 A" 786 746 63.16 0.17 0.75 0.86
17 A" 656 623 0.68 0.31 0.75 0.86
18 A" 620 589 11.80 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12779.9 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 12134.5 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/cc-pVTZ
ABC
0.32678 0.32311 0.16247

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 0.361 0.000
C2 0.624 -0.957 0.000
C3 0.000 1.125 0.000
N4 -0.699 -0.983 0.000
O5 -1.092 0.340 0.000
H6 2.149 0.694 0.000
H7 1.156 -1.893 0.000
H8 -0.186 2.184 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41151.36192.26792.21941.07372.25482.2467
C21.41152.17401.32332.15092.24711.07643.2442
C31.36192.17402.22121.34512.19143.23211.0751
N42.26791.32332.22121.37993.30442.06583.2085
O52.21942.15091.34511.37993.25963.16812.0549
H61.07372.24712.19143.30443.25962.77092.7697
H72.25481.07643.23212.06583.16812.77094.2924
H82.24673.24421.07513.20852.05492.76974.2924

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.013 C1 C2 H7 129.512
C1 C3 O5 110.150 C1 C3 H8 134.078
C2 C1 C3 103.221 C2 C1 H6 128.920
C2 N4 O5 105.426 C3 C1 H6 127.858
C3 O5 N4 109.191 N4 C2 H7 118.475
O5 C3 H8 115.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability