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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-244.623005
Energy at 298.15K 
HF Energy-244.623005
Nuclear repulsion energy164.086462
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 HF/aug-cc-pVDZ
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' 3451 3142 0.20 107.45 0.11 0.19
2 A' 3426 3120 0.05 39.36 0.74 0.85
3 A' 3405 3101 3.08 84.73 0.38 0.56
4 A' 1774 1615 21.21 2.46 0.57 0.73
5 A' 1623 1478 52.58 62.10 0.11 0.19
6 A' 1520 1384 17.33 2.83 0.56 0.71
7 A' 1362 1241 9.77 13.86 0.16 0.27
8 A' 1256 1143 24.46 5.38 0.09 0.17
9 A' 1206 1098 13.27 14.94 0.20 0.34
10 A' 1101 1002 2.50 1.63 0.12 0.21
11 A' 1031 939 59.74 4.29 0.15 0.26
12 A' 1001 912 9.25 3.02 0.66 0.79
13 A' 991 902 0.28 1.75 0.47 0.64
14 A" 1026 934 6.90 0.79 0.75 0.86
15 A" 1012 922 0.17 1.49 0.75 0.86
16 A" 852 776 67.06 0.31 0.75 0.86
17 A" 695 633 2.62 0.24 0.75 0.86
18 A" 641 584 17.87 0.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13686.2 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 12462.7 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 HF/aug-cc-pVDZ
ABC
0.33741 0.32685 0.16602

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.120 0.368 0.000
C2 0.596 -0.965 0.000
C3 0.000 1.112 0.000
N4 -0.688 -0.967 0.000
O5 -1.072 0.338 0.000
H6 2.143 0.693 0.000
H7 1.127 -1.902 0.000
H8 -0.173 2.173 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43181.34452.24692.19191.07352.26962.2203
C21.43182.16061.28392.11652.26731.07703.2308
C31.34452.16062.18971.32222.18343.21761.0751
N42.24691.28392.18971.36023.28132.04163.1820
O52.19192.11651.32221.36023.23433.13882.0436
H61.07352.26732.18343.28133.23432.78642.7483
H72.26961.07703.21762.04163.13882.78644.2772
H82.22033.23081.07513.18202.04362.74834.2772

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.545 C1 C2 H7 129.003
C1 C3 O5 110.560 C1 C3 H8 132.856
C2 C1 C3 102.154 C2 C1 H6 129.083
C2 N4 O5 106.314 C3 C1 H6 128.763
C3 O5 N4 109.427 N4 C2 H7 119.453
O5 C3 H8 116.584
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.477      
2 C 0.491      
3 C 0.685      
4 N -0.180      
5 O -0.786      
6 H -0.298      
7 H -0.162      
8 H -0.226      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.818 1.527 0.000 3.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.988 -2.945 0.000
y -2.945 -24.960 0.000
z 0.000 0.000 -30.701
Traceless
 xyz
x -1.158 -2.945 0.000
y -2.945 4.885 0.000
z 0.000 0.000 -3.727
Polar
3z2-r2-7.454
x2-y2-4.028
xy-2.945
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.723 -0.207 0.000
y -0.207 7.108 0.000
z 0.000 0.000 4.364


<r2> (average value of r2) Å2
<r2> 75.767
(<r2>)1/2 8.704