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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-44.255493
Energy at 298.15K 
HF Energy-43.515610
Nuclear repulsion energy83.066901
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-121G*
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' 3314 3158 0.01 123.01 0.11 0.20
2 A' 3293 3138 0.11 42.15 0.72 0.84
3 A' 3278 3123 0.97 90.46 0.40 0.57
4 A' 1560 1486 7.14 8.22 0.08 0.15
5 A' 1445 1377 28.14 20.12 0.39 0.57
6 A' 1383 1318 3.05 5.64 0.10 0.18
7 A' 1217 1159 5.24 11.17 0.08 0.15
8 A' 1171 1116 20.30 4.55 0.48 0.64
9 A' 1125 1072 5.32 11.01 0.10 0.18
10 A' 1055 1005 6.89 3.83 0.67 0.80
11 A' 949 904 29.88 8.78 0.14 0.25
12 A' 907 864 2.61 5.39 0.60 0.75
13 A' 894 852 4.19 0.53 0.71 0.83
14 A" 809 771 11.08 0.25 0.75 0.86
15 A" 807 769 30.45 0.84 0.75 0.86
16 A" 749 713 58.53 0.39 0.75 0.86
17 A" 621 592 0.12 0.23 0.75 0.86
18 A" 595 567 10.47 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12584.9 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 11990.9 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 MP2/CEP-121G*
ABC
0.31955 0.31509 0.15865

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.138 0.368 0.000
C2 0.635 -0.965 0.000
C3 0.000 1.141 0.000
N4 -0.704 -1.001 0.000
O5 -1.106 0.343 0.000
H6 2.166 0.702 0.000
H7 1.170 -1.908 0.000
H8 -0.199 2.205 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42561.37502.29482.24351.08112.27652.2714
C21.42562.19981.33902.17752.26391.08383.2781
C31.37502.19982.25421.36342.21003.26541.0825
N42.29481.33902.25421.40273.33702.08203.2451
O52.24352.17751.36341.40273.29143.20102.0707
H61.08112.26392.21003.33703.29142.79332.8022
H72.27651.08383.26542.08203.20102.79334.3345
H82.27143.27811.08253.24512.07072.80224.3345

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.169 C1 C2 H7 129.735
C1 C3 O5 110.024 C1 C3 H8 134.768
C2 C1 C3 103.513 C2 C1 H6 128.626
C2 N4 O5 105.138 C3 C1 H6 127.861
C3 O5 N4 109.156 N4 C2 H7 118.096
O5 C3 H8 115.208
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability