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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CISD/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 CISD/cc-pVDZ
 hartrees
Energy at 0K-245.245233
Energy at 298.15K 
HF Energy-244.607944
Nuclear repulsion energy162.981766
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 CISD/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' 3415 3148 0.33      
2 A' 3389 3124 0.23      
3 A' 3371 3107 1.47      
4 A' 1708 1575 11.77      
5 A' 1571 1448 38.71      
6 A' 1474 1359 11.67      
7 A' 1313 1210 11.53      
8 A' 1225 1129 19.87      
9 A' 1178 1086 10.20      
10 A' 1078 994 2.37      
11 A' 1004 925 44.84      
12 A' 965 889 5.30      
13 A' 956 881 1.66      
14 A" 967 891 5.10      
15 A" 948 874 0.01      
16 A" 829 764 51.90      
17 A" 676 623 1.82      
18 A" 631 582 16.90      

Unscaled Zero Point Vibrational Energy (zpe) 13347.5 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 12303.8 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 CISD/cc-pVDZ
ABC
0.33160 0.32394 0.16386

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.129 0.367 0.000
C2 0.606 -0.964 0.000
C3 0.000 1.118 0.000
N4 -0.696 -0.973 0.000
O5 -1.081 0.339 0.000
H6 2.158 0.696 0.000
H7 1.138 -1.908 0.000
H8 -0.182 2.185 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43031.35582.26392.21021.08022.27482.2408
C21.43032.16831.30142.13132.27251.08363.2456
C31.35582.16832.20371.33282.19893.23271.0820
N42.26391.30142.20371.36713.30572.05843.1990
O52.21022.13131.33281.36713.25873.15782.0532
H61.08022.27252.19893.30573.25872.79592.7735
H72.27481.08363.23272.05843.15782.79594.2999
H82.24083.24561.08203.19902.05322.77354.2999

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.853 C1 C2 H7 129.101
C1 C3 O5 110.589 C1 C3 H8 133.312
C2 C1 C3 102.170 C2 C1 H6 129.162
C2 N4 O5 105.979 C3 C1 H6 128.668
C3 O5 N4 109.409 N4 C2 H7 119.046
O5 C3 H8 116.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability