return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: BLYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/TZVP
 hartrees
Energy at 0K-246.059351
Energy at 298.15K 
HF Energy-246.059351
Nuclear repulsion energy160.115615
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 BLYP/TZVP
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' 3206 3198 0.04 134.49 0.11 0.20
2 A' 3184 3176 0.06 66.94 0.65 0.79
3 A' 3158 3150 0.92 96.81 0.35 0.52
4 A' 1532 1528 8.15 3.85 0.05 0.09
5 A' 1400 1396 26.87 31.91 0.29 0.45
6 A' 1348 1344 4.46 3.39 0.07 0.13
7 A' 1202 1199 4.65 13.48 0.13 0.23
8 A' 1110 1107 21.47 6.83 0.38 0.55
9 A' 1066 1064 10.75 9.14 0.06 0.11
10 A' 1011 1009 12.94 2.78 0.74 0.85
11 A' 906 903 6.02 4.70 0.69 0.82
12 A' 881 879 0.77 0.84 0.48 0.65
13 A' 744 742 19.90 7.15 0.17 0.28
14 A" 854 851 9.43 1.51 0.75 0.86
15 A" 819 817 0.24 0.01 0.75 0.86
16 A" 748 746 60.23 0.30 0.75 0.86
17 A" 612 610 3.14 0.14 0.75 0.86
18 A" 578 577 10.75 0.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12178.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 12148.1 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 BLYP/TZVP
ABC
0.32123 0.31197 0.15826

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.131 0.373 0.000
C2 0.628 -0.964 0.000
C3 0.000 1.138 0.000
N4 -0.690 -1.021 0.000
O5 -1.111 0.356 0.000
H6 2.162 0.702 0.000
H7 1.185 -1.896 0.000
H8 -0.180 2.207 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42851.36532.29382.24181.08212.26992.2540
C21.42852.19381.31922.18272.26461.08613.2719
C31.36532.19382.26741.35882.20533.25751.0836
N42.29381.31922.26741.44013.33232.06913.2684
O52.24182.18271.35881.44013.29093.21592.0720
H61.08212.26462.20533.33233.29092.77582.7835
H72.26991.08613.25752.06913.21592.77584.3240
H82.25403.27191.08363.26842.07202.78354.3240

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.131 C1 C2 H7 128.509
C1 C3 O5 110.758 C1 C3 H8 133.645
C2 C1 C3 103.459 C2 C1 H6 128.320
C2 N4 O5 104.478 C3 C1 H6 128.221
C3 O5 N4 108.174 N4 C2 H7 118.361
O5 C3 H8 115.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.058      
2 C -0.163      
3 C -0.066      
4 N -0.034      
5 O -0.092      
6 H 0.140      
7 H 0.135      
8 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.683 1.515 0.000 3.081
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.233 -2.634 0.000
y -2.634 -25.588 0.000
z 0.000 0.000 -30.486
Traceless
 xyz
x -1.196 -2.634 0.000
y -2.634 4.272 0.000
z 0.000 0.000 -3.076
Polar
3z2-r2-6.152
x2-y2-3.645
xy-2.634
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.912 -0.162 0.000
y -0.162 7.596 0.000
z 0.000 0.000 3.871


<r2> (average value of r2) Å2
<r2> 78.573
(<r2>)1/2 8.864