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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CCD/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 CCD/cc-pVTZ
 hartrees
Energy at 0K-245.582468
Energy at 298.15K 
HF Energy-244.675273
Nuclear repulsion energy162.912153
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 CCD/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 3109 0.18      
2 A' 3303 3084 0.21      
3 A' 3287 3069 1.22      
4 A' 1649 1539 9.15      
5 A' 1514 1414 29.72      
6 A' 1435 1340 9.45      
7 A' 1282 1197 7.44      
8 A' 1200 1120 20.20      
9 A' 1146 1070 8.58      
10 A' 1058 988 3.28      
11 A' 983 918 38.20      
12 A' 941 878 4.79      
13 A' 934 872 2.94      
14 A" 936 874 5.96      
15 A" 908 848 0.18      
16 A" 805 751 58.85      
17 A" 660 616 1.58      
18 A" 617 576 13.74      

Unscaled Zero Point Vibrational Energy (zpe) 12992.6 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 12131.2 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 CCD/cc-pVTZ
ABC
0.33101 0.32406 0.16375

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.124 0.370 0.000
C2 0.613 -0.960 0.000
C3 0.000 1.119 0.000
N4 -0.690 -0.979 0.000
O5 -1.087 0.337 0.000
H6 2.145 0.699 0.000
H7 1.148 -1.894 0.000
H8 -0.182 2.178 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42451.35102.26062.21131.07292.26332.2312
C21.42452.16771.30342.13842.25851.07613.2376
C31.35102.16772.20881.33922.18563.22421.0747
N42.26061.30342.20881.37463.29482.05353.1978
O52.21132.13841.33921.37463.25233.15802.0514
H61.07292.25852.18563.29483.25232.77792.7576
H72.26331.07613.22422.05353.15802.77794.2838
H82.23123.23761.07473.19782.05142.75764.2838

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.855 C1 C2 H7 129.141
C1 C3 O5 110.569 C1 C3 H8 133.476
C2 C1 C3 102.674 C2 C1 H6 128.923
C2 N4 O5 105.946 C3 C1 H6 128.402
C3 O5 N4 108.956 N4 C2 H7 119.004
O5 C3 H8 115.955
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability