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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCSD=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD=FULL/TZVP
 hartrees
Energy at 0K-245.551356
Energy at 298.15K 
HF Energy-244.664471
Nuclear repulsion energy162.353109
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 CCSD=FULL/TZVP
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' 3336 3161 0.11      
2 A' 3312 3138 0.14      
3 A' 3293 3120 1.28      
4 A' 1641 1555 10.58      
5 A' 1504 1425 31.76      
6 A' 1430 1355 10.00      
7 A' 1283 1215 6.54      
8 A' 1191 1129 23.98      
9 A' 1137 1077 11.36      
10 A' 1060 1004 4.28      
11 A' 952 902 21.45      
12 A' 928 880 2.35      
13 A' 924 876 17.83      
14 A" 838 794 17.62      
15 A" 827 783 13.76      
16 A" 748 709 36.75      
17 A" 611 578 0.39      
18 A" 573 543 16.84      

Unscaled Zero Point Vibrational Energy (zpe) 12793.3 cm-1
Scaled (by 0.9475) Zero Point Vibrational Energy (zpe) 12121.6 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 CCSD=FULL/TZVP
ABC
0.32924 0.32146 0.16265

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.373 0.000
C2 0.616 -0.959 0.000
C3 0.000 1.122 0.000
N4 -0.688 -0.990 0.000
O5 -1.093 0.340 0.000
H6 2.147 0.702 0.000
H7 1.158 -1.890 0.000
H8 -0.186 2.182 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42631.35122.26852.21781.07412.26372.2332
C21.42632.17041.30442.14632.25911.07733.2414
C31.35122.17042.22181.34412.18823.22711.0756
N42.26851.30442.22181.39033.30202.05363.2115
O52.21782.14631.34411.39033.26043.16832.0531
H61.07412.25912.18823.30203.26042.77422.7630
H72.26371.07733.22712.05363.16832.77424.2877
H82.23323.24141.07563.21152.05312.76304.2877

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.276 C1 C2 H7 128.892
C1 C3 O5 110.744 C1 C3 H8 133.607
C2 C1 C3 102.754 C2 C1 H6 128.698
C2 N4 O5 105.549 C3 C1 H6 128.548
C3 O5 N4 108.678 N4 C2 H7 118.831
O5 C3 H8 115.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability