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All results from a given calculation for C3H3NO (Isoxazole)

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

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/6-31G**
 hartrees
Energy at 0K-245.357399
Energy at 298.15K 
HF Energy-244.590262
Nuclear repulsion energy161.557062
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/6-31G**
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' 3367 3169 0.12      
2 A' 3342 3146 0.10      
3 A' 3321 3127 2.63      
4 A' 1659 1562 9.26      
5 A' 1524 1435 34.40      
6 A' 1439 1355 8.49      
7 A' 1283 1208 6.34      
8 A' 1189 1119 18.20      
9 A' 1138 1072 8.31      
10 A' 1072 1009 4.19      
11 A' 939 884 14.79      
12 A' 922 868 0.98      
13 A' 911 858 22.47      
14 A" 901 848 6.21      
15 A" 867 816 2.75      
16 A" 786 740 44.03      
17 A" 635 598 1.81      
18 A" 594 559 16.33      

Unscaled Zero Point Vibrational Energy (zpe) 12944.6 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 12186.0 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 QCISD/6-31G**
ABC
0.32618 0.31819 0.16107

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.375 0.000
C2 0.621 -0.960 0.000
C3 0.000 1.129 0.000
N4 -0.691 -1.000 0.000
O5 -1.099 0.341 0.000
H6 2.152 0.703 0.000
H7 1.169 -1.889 0.000
H8 -0.185 2.189 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42851.35672.28002.22761.07472.26442.2397
C21.42852.17971.31262.15732.26031.07833.2512
C31.35672.17972.23781.35242.19333.23641.0764
N42.28001.31262.23781.40163.31332.06183.2286
O52.22762.15731.35241.40163.27093.18112.0616
H61.07472.26032.19333.31333.27092.77172.7696
H72.26441.07833.23642.06183.18112.77174.2972
H82.23973.25121.07643.22862.06162.76964.2972

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.498 C1 C2 H7 128.658
C1 C3 O5 110.622 C1 C3 H8 133.674
C2 C1 C3 102.966 C2 C1 H6 128.544
C2 N4 O5 105.229 C3 C1 H6 128.490
C3 O5 N4 108.684 N4 C2 H7 118.843
O5 C3 H8 115.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability