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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-245.438395
Energy at 298.15K 
HF Energy-244.674123
Nuclear repulsion energy164.412037
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/6-311+G(3df,2p)
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' 3411 3145 0.46      
2 A' 3385 3121 0.35      
3 A' 3368 3105 0.97      
4 A' 1710 1576 14.50      
5 A' 1566 1443 40.70      
6 A' 1488 1371 13.06      
7 A' 1332 1228 9.38      
8 A' 1241 1144 19.33      
9 A' 1188 1095 10.65      
10 A' 1091 1006 1.82      
11 A' 1026 946 46.75      
12 A' 974 898 6.62      
13 A' 966 891 1.79      
14 A" 993 915 5.66      
15 A" 967 891 0.00      
16 A" 835 770 62.12      
17 A" 685 631 1.57      
18 A" 638 588 15.03      

Unscaled Zero Point Vibrational Energy (zpe) 13432.1 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 12381.7 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/6-311+G(3df,2p)
ABC
0.33748 0.32957 0.16674

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.116 0.365 0.000
C2 0.602 -0.957 0.000
C3 0.000 1.109 0.000
N4 -0.687 -0.966 0.000
O5 -1.073 0.337 0.000
H6 2.132 0.690 0.000
H7 1.131 -1.887 0.000
H8 -0.177 2.163 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41821.34192.24142.18971.06672.25192.2155
C21.41822.15181.28882.11622.24811.07043.2159
C31.34192.15182.18611.32222.17343.20271.0690
N42.24141.28882.18611.35893.26982.03803.1708
O52.18972.11621.32221.35893.22493.13112.0346
H61.06672.24812.17343.26983.22492.76462.7397
H72.25191.07043.20272.03803.13112.76464.2565
H82.21553.21591.06903.17082.03462.73974.2565

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.699 C1 C2 H7 129.086
C1 C3 O5 110.558 C1 C3 H8 133.230
C2 C1 C3 102.415 C2 C1 H6 129.012
C2 N4 O5 106.086 C3 C1 H6 128.573
C3 O5 N4 109.243 N4 C2 H7 119.215
O5 C3 H8 116.212
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability