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: B2PLYP=FULLultrafine/aug-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 B2PLYP=FULLultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-245.969334
Energy at 298.15K 
HF Energy-245.638507
Nuclear repulsion energy162.298775
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 B2PLYP=FULLultrafine/aug-cc-pVTZ
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' 3305 3170 0.12 127.29 0.09 0.17
2 A' 3280 3146 0.30 49.41 0.65 0.79
3 A' 3264 3130 0.48 89.90 0.37 0.54
4 A' 1591 1526 9.78 4.54 0.01 0.01
5 A' 1461 1401 31.78 35.92 0.22 0.36
6 A' 1404 1347 4.57 5.04 0.02 0.04
7 A' 1247 1196 5.19 17.41 0.07 0.13
8 A' 1156 1109 22.33 3.76 0.30 0.46
9 A' 1125 1079 7.32 13.89 0.06 0.12
10 A' 1049 1006 6.93 2.34 0.63 0.77
11 A' 935 897 10.17 2.68 0.66 0.80
12 A' 916 879 1.30 0.62 0.51 0.68
13 A' 868 832 22.68 7.21 0.12 0.21
14 A" 926 888 4.73 0.27 0.75 0.86
15 A" 888 852 0.50 0.65 0.75 0.86
16 A" 796 764 64.33 0.15 0.75 0.86
17 A" 649 623 2.40 0.14 0.75 0.86
18 A" 612 587 11.77 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12736.4 cm-1
Scaled (by 0.9591) Zero Point Vibrational Energy (zpe) 12215.5 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 B2PLYP=FULLultrafine/aug-cc-pVTZ
ABC
0.32880 0.32164 0.16259

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.366 0.000
C2 0.618 -0.958 0.000
C3 0.000 1.125 0.000
N4 -0.690 -0.992 0.000
O5 -1.092 0.345 0.000
H6 2.143 0.693 0.000
H7 1.160 -1.887 0.000
H8 -0.178 2.184 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41651.35462.26422.21421.07222.25342.2355
C21.41652.17291.30852.15062.24771.07573.2418
C31.35462.17292.22661.34172.18593.22801.0742
N42.26421.30852.22661.39693.29622.05533.2172
O52.21422.15061.34171.39693.25373.17162.0532
H61.07222.24772.18593.29623.25372.76142.7588
H72.25341.07573.22802.05533.17162.76144.2860
H82.23553.24181.07423.21722.05322.75884.2860

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.317 C1 C2 H7 128.913
C1 C3 O5 110.409 C1 C3 H8 133.639
C2 C1 C3 103.251 C2 C1 H6 128.617
C2 N4 O5 105.254 C3 C1 H6 128.132
C3 O5 N4 108.769 N4 C2 H7 118.770
O5 C3 H8 115.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.170      
2 C -0.263      
3 C -0.517      
4 N -0.387      
5 O -0.263      
6 H 0.413      
7 H 0.582      
8 H 0.606      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.614 1.512 0.000 3.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.931 -2.697 -0.007
y -2.697 -25.536 -0.001
z -0.007 -0.001 -30.446
Traceless
 xyz
x -0.940 -2.697 -0.007
y -2.697 4.152 -0.001
z -0.007 -0.001 -3.212
Polar
3z2-r2-6.425
x2-y2-3.395
xy-2.697
xz-0.007
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.117 -0.085 0.002
y -0.085 7.785 0.001
z 0.002 0.001 4.529


<r2> (average value of r2) Å2
<r2> 76.931
(<r2>)1/2 8.771