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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-245.659239
Energy at 298.15K-245.654749
HF Energy-244.584959
Nuclear repulsion energy164.514295
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 CBS-Q
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' 3472 3472 0.63 105.94 0.10 0.19
2 A' 3449 3449 0.47 39.27 0.75 0.85
3 A' 3428 3428 4.62 87.13 0.42 0.59
4 A' 1797 1797 18.98 1.63 0.74 0.85
5 A' 1635 1635 50.09 37.14 0.24 0.39
6 A' 1536 1536 18.65 2.66 0.75 0.86
7 A' 1378 1378 10.45 10.84 0.37 0.54
8 A' 1276 1276 22.21 3.88 0.31 0.47
9 A' 1220 1220 13.93 11.67 0.35 0.51
10 A' 1113 1113 2.20 1.99 0.27 0.43
11 A' 1044 1044 63.65 4.80 0.17 0.29
12 A' 1010 1010 7.48 4.15 0.75 0.86
13 A' 999 999 0.55 1.80 0.54 0.71
14 A" 1036 1036 2.93 2.55 0.75 0.86
15 A" 1023 1023 0.03 0.79 0.75 0.86
16 A" 870 870 51.19 0.98 0.75 0.86
17 A" 705 705 3.04 0.33 0.75 0.86
18 A" 649 649 21.14 1.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13819.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13819.9 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 CBS-Q
ABC
0.32444 0.32066 0.16127

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.119 0.368 0.000
C2 0.594 -0.962 0.000
C3 0.000 1.109 0.000
N4 -0.687 -0.964 0.000
O5 -1.068 0.336 0.000
H6 2.140 0.689 0.000
H7 1.122 -1.897 0.000
H8 -0.182 2.166 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43021.34192.24442.18701.07032.26512.2185
C21.43022.15471.28122.10882.26201.07363.2222
C31.34192.15472.18411.31832.18073.20851.0718
N42.24441.28122.18411.35483.27512.03573.1699
O52.18702.10881.31831.35483.22723.12762.0324
H61.07032.26202.18073.27513.22722.77912.7514
H72.26511.07363.20852.03573.12762.77914.2663
H82.21853.22221.07183.16992.03242.75144.2663

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.622 C1 C2 H7 128.996
C1 C3 O5 110.592 C1 C3 H8 133.286
C2 C1 C3 101.977 C2 C1 H6 128.981
C2 N4 O5 106.227 C3 C1 H6 129.042
C3 O5 N4 109.581 N4 C2 H7 119.382
O5 C3 H8 116.122
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability