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 C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-283.739158
Energy at 298.15K-283.745941
HF Energy-283.739158
Nuclear repulsion energy227.051353
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/daug-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 3422 3095 0.29      
2 A 3385 3063 6.18      
3 A 3264 2953 14.22      
4 A 3235 2926 11.39      
5 A 3179 2875 15.59      
6 A 1792 1621 43.39      
7 A 1693 1531 96.13      
8 A 1605 1452 8.15      
9 A 1593 1441 6.97      
10 A 1537 1391 4.53      
11 A 1495 1352 12.81      
12 A 1372 1241 39.44      
13 A 1309 1184 13.58      
14 A 1166 1055 2.10      
15 A 1138 1029 11.48      
16 A 1107 1001 11.53      
17 A 1092 988 0.11      
18 A 1049 949 3.92      
19 A 1043 944 15.87      
20 A 1004 908 22.82      
21 A 882 798 51.98      
22 A 713 645 0.68      
23 A 701 634 0.64      
24 A 699 632 2.80      
25 A 362 327 2.64      
26 A 278 251 2.77      
27 A 140 127 0.92      

Unscaled Zero Point Vibrational Energy (zpe) 20126.9 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 18206.8 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/daug-cc-pVTZ
ABC
0.32033 0.12124 0.08940

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.089 0.011 -0.000
H2 2.430 -0.526 -0.876
H3 2.527 0.998 -0.000
H4 2.430 -0.526 0.876
C5 0.605 0.107 -0.000
O6 -0.069 -1.028 0.000
N7 -1.407 -0.772 0.000
C8 -1.521 0.499 -0.000
H9 -2.496 0.940 -0.000
C10 -0.249 1.141 -0.000
H11 -0.027 2.184 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08271.07991.08271.48692.39533.58303.64344.67852.59693.0331
H21.08271.76091.75242.12062.69523.94354.17495.21363.27473.7615
H31.07991.76091.76092.11823.29304.31404.07895.02342.77952.8158
H41.08271.75241.76092.12062.69543.94354.17505.21363.27453.7612
C51.48692.12062.11822.12061.31992.19612.16263.21151.34152.1711
O62.39532.69523.29302.69541.31991.36222.10703.12432.17633.2118
N73.58303.94354.31403.94352.19611.36221.27602.02882.23643.2621
C83.64344.17494.07894.17502.16262.10701.27601.06991.42532.2520
H94.67855.21365.02345.21363.21153.12432.02881.06992.25622.7647
C102.59693.27472.77953.27451.34152.17632.23641.42532.25621.0660
H113.03313.76152.81583.76122.17113.21183.26212.25202.76471.0660

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 117.039 C1 C5 C10 133.253
H2 C1 H3 109.024 H2 C1 H4 108.052
H2 C1 C5 110.240 H3 C1 H4 109.023
H3 C1 C5 110.214 H4 C1 C5 110.240
C5 O6 N7 109.914 C5 C10 C8 102.777
C5 C10 H11 128.432 O6 C5 C10 109.708
O6 N7 C8 105.953 N7 C8 H9 119.470
N7 C8 C10 111.648 C8 C10 H11 128.791
H9 C8 C10 128.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.699      
2 H 0.467      
3 H 0.233      
4 H 0.467      
5 C 0.814      
6 O -1.374      
7 N -0.765      
8 C -0.568      
9 H 1.425      
10 C -0.691      
11 H 0.690      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.932 2.788 -0.001 3.392
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.450 -4.070 0.001
y -4.070 -36.060 0.000
z 0.001 0.000 -36.454
Traceless
 xyz
x 4.807 -4.070 0.001
y -4.070 -2.108 0.000
z 0.001 0.000 -2.699
Polar
3z2-r2-5.399
x2-y24.610
xy-4.070
xz0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.718 -0.356 0.000
y -0.356 8.014 -0.000
z 0.000 -0.000 5.688


<r2> (average value of r2) Å2
<r2> 133.350
(<r2>)1/2 11.548