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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-245.371127
Energy at 298.15K 
HF Energy-244.596981
Nuclear repulsion energy161.350532
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 QCISD/6-31+G**
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' 3361 3178 0.03      
2 A' 3339 3157 0.08      
3 A' 3320 3138 1.40      
4 A' 1645 1555 12.49      
5 A' 1515 1433 37.80      
6 A' 1430 1352 7.75      
7 A' 1278 1208 7.15      
8 A' 1181 1116 20.86      
9 A' 1130 1068 10.07      
10 A' 1066 1008 5.32      
11 A' 937 885 13.49      
12 A' 916 866 1.02      
13 A' 900 851 25.26      
14 A" 887 839 9.19      
15 A" 844 798 9.35      
16 A" 767 725 56.51      
17 A" 624 590 1.62      
18 A" 575 544 16.88      

Unscaled Zero Point Vibrational Energy (zpe) 12857.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 12155.2 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 QCISD/6-31+G**
ABC
0.32540 0.31730 0.16065

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.129 0.375 0.000
C2 0.622 -0.962 0.000
C3 0.000 1.131 0.000
N4 -0.691 -1.001 0.000
O5 -1.101 0.342 0.000
H6 2.153 0.704 0.000
H7 1.168 -1.892 0.000
H8 -0.186 2.192 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43031.35872.28142.22971.07542.26772.2427
C21.43032.18411.31352.16112.26271.07853.2560
C31.35872.18412.24131.35412.19483.24141.0767
N42.28141.31352.24131.40453.31552.06193.2322
O52.22972.16111.35411.40453.27343.18472.0628
H61.07542.26272.19483.31553.27342.77652.7722
H72.26771.07853.24142.06193.18472.77654.3028
H82.24273.25601.07673.23222.06282.77224.3028

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.433 C1 C2 H7 128.808
C1 C3 O5 110.556 C1 C3 H8 133.785
C2 C1 C3 103.063 C2 C1 H6 128.559
C2 N4 O5 105.282 C3 C1 H6 128.378
C3 O5 N4 108.666 N4 C2 H7 118.759
O5 C3 H8 115.659
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability