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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCSD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-245.368230
Energy at 298.15K 
HF Energy-244.604801
Nuclear repulsion energy161.326681
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/cc-pVDZ
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' 3325 3150 0.12      
2 A' 3300 3126 0.11      
3 A' 3282 3109 1.41      
4 A' 1639 1553 9.16      
5 A' 1511 1431 31.87      
6 A' 1418 1344 9.16      
7 A' 1260 1193 8.15      
8 A' 1172 1110 21.73      
9 A' 1133 1073 8.00      
10 A' 1045 990 4.45      
11 A' 941 891 24.18      
12 A' 922 873 3.84      
13 A' 918 870 10.54      
14 A" 907 860 6.14      
15 A" 884 838 0.35      
16 A" 787 745 48.22      
17 A" 642 609 1.81      
18 A" 604 572 15.01      

Unscaled Zero Point Vibrational Energy (zpe) 12843.9 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 12167.0 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/cc-pVDZ
ABC
0.32469 0.31777 0.16060

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.138 0.371 0.000
C2 0.616 -0.969 0.000
C3 0.000 1.129 0.000
N4 -0.700 -0.988 0.000
O5 -1.095 0.343 0.000
H6 2.174 0.703 0.000
H7 1.156 -1.917 0.000
H8 -0.186 2.202 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43831.36662.28612.23311.08812.28852.2590
C21.43832.18581.31602.15592.28561.09143.2708
C31.36662.18582.22951.34792.21513.25761.0897
N42.28611.31602.22951.38843.33492.07573.2317
O52.23312.15591.34791.38843.28893.18992.0700
H61.08812.28562.21513.33493.28892.81122.7953
H72.28851.09143.25762.07573.18992.81124.3323
H82.25903.27081.08973.23172.07002.79534.3323

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.122 C1 C2 H7 129.046
C1 C3 O5 110.703 C1 C3 H8 133.449
C2 C1 C3 102.364 C2 C1 H6 129.044
C2 N4 O5 105.689 C3 C1 H6 128.593
C3 O5 N4 109.122 N4 C2 H7 118.832
O5 C3 H8 115.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability