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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-245.640211
Energy at 298.15K 
HF Energy-244.672386
Nuclear repulsion energy161.611745
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(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3297 3127        
2 A' 3270 3102        
3 A' 3253 3086        
4 A' 1594 1512        
5 A' 1466 1391        
6 A' 1398 1326        
7 A' 1243 1179        
8 A' 1158 1099        
9 A' 1118 1061        
10 A' 1042 988        
11 A' 923 876        
12 A' 904 858        
13 A' 879 834        
14 A" 906 859        
15 A" 874 829        
16 A" 781 741        
17 A" 637 604        
18 A" 599 569        

Unscaled Zero Point Vibrational Energy (zpe) 12670.6 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 12019.4 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(T)/cc-pVTZ
ABC
0.32555 0.31922 0.16118

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.130 0.370 0.000
C2 0.620 -0.962 0.000
C3 0.000 1.126 0.000
N4 -0.694 -0.996 0.000
O5 -1.098 0.346 0.000
H6 2.154 0.700 0.000
H7 1.162 -1.895 0.000
H8 -0.180 2.189 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42681.35982.27842.22821.07542.26592.2411
C21.42682.17881.31402.15962.26151.07893.2510
C31.35982.17882.23241.34682.19573.23741.0775
N42.27841.31402.23241.40143.31382.06193.2255
O52.22822.15961.34681.40143.27093.18292.0586
H61.07542.26152.19573.31383.27092.77832.7682
H72.26591.07893.23742.06193.18292.77834.2988
H82.24113.25101.07753.22552.05862.76824.2988

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.393 C1 C2 H7 128.927
C1 C3 O5 110.819 C1 C3 H8 133.381
C2 C1 C3 102.840 C2 C1 H6 128.781
C2 N4 O5 105.323 C3 C1 H6 128.380
C3 O5 N4 108.625 N4 C2 H7 118.680
O5 C3 H8 115.800
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability