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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CISD/3-21G

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/3-21G
 hartrees
Energy at 0K-243.659208
Energy at 298.15K 
HF Energy-243.208592
Nuclear repulsion energy159.168747
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/3-21G
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' 3390 3191 0.83      
2 A' 3362 3165 0.33      
3 A' 3342 3146 1.51      
4 A' 1631 1535 10.78      
5 A' 1464 1378 22.12      
6 A' 1428 1344 9.84      
7 A' 1289 1213 6.84      
8 A' 1201 1130 14.42      
9 A' 1077 1013 6.60      
10 A' 1058 996 13.83      
11 A' 975 918 6.66      
12 A' 934 879 0.29      
13 A' 876 825 23.43      
14 A" 967 911 2.41      
15 A" 948 892 3.60      
16 A" 831 782 72.60      
17 A" 656 618 10.30      
18 A" 597 562 11.92      

Unscaled Zero Point Vibrational Energy (zpe) 13012.8 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 12249.0 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 CISD/3-21G
ABC
0.31986 0.30554 0.15627

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.395 0.000
C2 0.638 -0.964 0.000
C3 0.000 1.150 0.000
N4 -0.674 -1.048 0.000
O5 -1.129 0.348 0.000
H6 2.143 0.722 0.000
H7 1.221 -1.867 0.000
H8 -0.174 2.209 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.44191.35232.30362.25141.07222.26402.2291
C21.44192.20771.31522.20062.25921.07483.2745
C31.35232.20772.29851.38492.18553.25441.0729
N42.30361.31522.29851.46763.32672.06433.2943
O52.25142.20061.38491.46763.29343.22882.0916
H61.07222.25922.18553.32673.29342.74802.7532
H72.26401.07483.25442.06433.22882.74804.3075
H82.22913.27451.07293.29432.09162.75324.3075

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.259 C1 C2 H7 127.601
C1 C3 O5 110.669 C1 C3 H8 133.268
C2 C1 C3 104.341 C2 C1 H6 127.338
C2 N4 O5 104.389 C3 C1 H6 128.321
C3 O5 N4 107.342 N4 C2 H7 119.139
O5 C3 H8 116.064
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability