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: B3LYPultrafine/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 B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-246.126058
Energy at 298.15K 
HF Energy-246.126058
Nuclear repulsion energy162.323927
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 B3LYPultrafine/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' 3280 3171 0.05 117.97 0.13 0.23
2 A' 3256 3147 0.02 59.78 0.61 0.76
3 A' 3233 3126 1.24 90.53 0.36 0.53
4 A' 1600 1547 9.76 1.98 0.08 0.15
5 A' 1462 1414 30.16 32.25 0.25 0.40
6 A' 1404 1357 7.10 2.21 0.16 0.28
7 A' 1251 1209 5.81 12.66 0.16 0.27
8 A' 1151 1113 22.20 4.37 0.44 0.61
9 A' 1122 1084 9.97 9.67 0.12 0.21
10 A' 1043 1009 6.50 2.77 0.60 0.75
11 A' 936 905 10.27 3.70 0.62 0.76
12 A' 921 890 1.42 0.96 0.61 0.76
13 A' 871 842 24.08 5.47 0.18 0.30
14 A" 920 889 5.07 0.93 0.75 0.86
15 A" 883 854 0.12 0.12 0.75 0.86
16 A" 785 759 57.04 0.20 0.75 0.86
17 A" 650 629 3.07 0.19 0.75 0.86
18 A" 610 590 13.26 0.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12689.5 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 12266.9 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 B3LYPultrafine/cc-pVTZ
ABC
0.32935 0.32129 0.16263

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.368 0.000
C2 0.615 -0.959 0.000
C3 0.000 1.124 0.000
N4 -0.689 -0.992 0.000
O5 -1.091 0.345 0.000
H6 2.146 0.694 0.000
H7 1.160 -1.890 0.000
H8 -0.176 2.186 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42041.35352.26502.21371.07432.25762.2346
C21.42042.17251.30492.14802.25311.07833.2435
C31.35352.17252.22581.34092.18843.22961.0764
N42.26501.30492.22581.39643.29862.05603.2193
O52.21372.14801.34091.39643.25583.17252.0557
H61.07432.25312.18843.29863.25582.76532.7601
H72.25761.07833.22962.05603.17252.76534.2894
H82.23463.24351.07643.21932.05572.76014.2894

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.352 C1 C2 H7 128.720
C1 C3 O5 110.487 C1 C3 H8 133.425
C2 C1 C3 103.079 C2 C1 H6 128.609
C2 N4 O5 105.294 C3 C1 H6 128.312
C3 O5 N4 108.788 N4 C2 H7 118.928
O5 C3 H8 116.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.051      
3 C 0.044      
4 N -0.072      
5 O -0.112      
6 H 0.132      
7 H 0.127      
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
  2.529 1.487 0.000 2.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.583 -2.589 0.000
y -2.589 -25.183 0.000
z 0.000 0.000 -30.048
Traceless
 xyz
x -0.967 -2.589 0.000
y -2.589 4.132 0.000
z 0.000 0.000 -3.165
Polar
3z2-r2-6.330
x2-y2-3.400
xy-2.589
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.563 -0.210 0.000
y -0.210 7.235 0.000
z 0.000 0.000 3.601


<r2> (average value of r2) Å2
<r2> 76.703
(<r2>)1/2 8.758